Packages tagged data

2199 packages have this tag.

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Related tags: library (2170), bsd3 (1532), mit (349), deprecated (166), program (132), text (83), math (72), data-structures (65), gpl (65), parsing (55), apache (54), public-domain (53), control (47), lenses (38), concurrency (29), bsd2 (28), network (25), system (25), conduit (24), accelerate (22), generics (21), json (21), cryptography (20), dependent-types (18), lgpl (18), mpl (18), serialization (17), web (16), numerical (15), algebra (14), configuration (14), database (14), codec (13), optics (13), compilers-interpreters (12), language (12), parallelism (12), xml (12), streaming (11), graphics (10), type-system (10), algorithms (9), development (9), records (9), testing (9), bit (8), foreign (8), game (8), agpl (7), enumerator (7), io-streams (7), reflection (7), succinct-data-structures (7), time (7), numeric (6), these (6), bit-vectors (5), failure (5), list (5), monads (5), physics (5), singletons (5), sound (5), combinators (4), conversion (4), csv (4), geography (4), graphs (4), lens (4), logging (4), logic (4), natural-language-processing (4), parser (4), pipes (4), profunctors (4), schema (4), arrows (3), aviation (3), containers (3), data-mining (3), file (3), hash (3), mathematics (3), maths (3), optimization (3), statistics (3), test (3), tools (3), types (3), utility (3), vector (3), RealFrac (2), aeson (2), array (2), comonads (2), composition (2), compression (2), concurrent (2), data-science (2), data-structure (2), digest (2), embedded (2), filters (2), functions (2), geometry (2), ghc (2), irc (2), machine-learning (2), monad (2), nix (2), optimisation (2), other (2), pattern (2), phantom-types (2), random (2), search (2), sorting (2), spreadsheet (2), string (2), structures (2), template-haskell (2), toml (2), tree (2), unicode (2), utils (2), validation (2), Excel (1), ai (1), api (1), astrology (1), aws (1), binary (1), binary-search (1), bits (1), bsd4 (1), bytes (1), bytestring (1), bytestrings (1), ...

Name
DLs
Rating
Description
Tags
Last U/L
Maintainer
ABList50.0An alternating list of two types (bsd3, data, library)2014-06-23DylanJust
AC-Angle100.0Angles in degrees and radians. (bsd3, data, library, math, numerical)2010-07-23AndrewCoppin
AC-Boolean70.0Handle Boolean values generatically. (bsd3, data, library, logic, math)2010-11-09AndrewCoppin
AC-Colour110.0Efficient RGB colour types. (bsd3, data, graphics, library, math, numerical)2014-01-12AndrewCoppin
AC-HalfInteger60.0Efficient half-integer type. (bsd3, data, library, math, numerical)2009-08-12AndrewCoppin
AC-Terminal80.0Trivial wrapper over ansi-terminal. (bsd3, data, library, math, numerical)2010-10-28AndrewCoppin
AC-VanillaArray60.0Immutable arrays with plain integer indicies. (bsd3, data, library)2010-01-17AndrewCoppin
AC-Vector80.0Efficient geometric vectors and transformations. (bsd3, data, graphics, library, math, numerical)2011-08-12AndrewCoppin
AC-Vector-Fancy100.0Fancy type-system stuff for AC-Vector (bsd3, data, graphics, library, math, numerical)2010-08-15AndrewCoppin
AERN-Basics (deprecated in favor of aern2-mp, aern2-real)60.0foundational type classes for approximating exact real numbers (bsd3, data, deprecated, library, math, program)2011-05-11MichalKonecny
AERN-Real (deprecated in favor of aern2-mp, aern2-real)100.0arbitrary precision real interval arithmetic (bsd3, data, deprecated, library, math)2011-05-11MichalKonecny
AERN-Real-Double (deprecated in favor of aern2-mp, aern2-real)60.0arbitrary precision real interval arithmetic (bsd3, data, deprecated, library, math, program)2011-05-11MichalKonecny
AERN-Real-Interval (deprecated in favor of aern2-mp, aern2-real)70.0arbitrary precision real interval arithmetic (bsd3, data, deprecated, library, math)2011-05-11MichalKonecny
AERN-RnToRm (deprecated)120.0polynomial function enclosures (PFEs) approximating exact real functions (bsd3, data, deprecated, library, math)2009-07-29MichalKonecny
AERN-RnToRm-Plot (deprecated)70.0GL plotting of polynomial function enclosures (PFEs) (bsd3, data, deprecated, library, math)2009-08-01MichalKonecny
ANum60.0Num instance for Applicatives provided via the ANum newtype (bsd3, data, library)2018-02-13DanBurton
AesonBson70.0Mapping between Aeson's JSON and Bson objects. (data, library)2019-12-01AndrasSlemmer, NiklasHambuechen
ArrayRef60.0Unboxed references, dynamic arrays and more (bsd3, data, library)2009-06-26GwernBranwen
AttoBencode70.0Fast Bencode encoding and parsing library (bsd3, data, library)2014-06-24FlorianHartwig
BiobaseENA50.0European Nucleotide Archive data (bsd3, data, library)2019-06-14ChristianHoener
Boolean1840.0Generalized booleans and numbers (bsd3, data, library)2017-02-19ConalElliott
C-structs212.0C-Structs implementation for Haskell (c, data, foreign, library, mit, structures)2021-01-13SimonPlakolb
CBOR50.0Encode/Decode values to/from CBOR (data, lgpl, library)2014-07-24KyleMurphy
CLASE40.0Cursor Library for A Structured Editor (bsd3, data, library)2009-02-11TristanAllwood
CLI40.0CLI tools (bsd3, data, library)2015-03-10g960059
COrdering40.0An algebraic data type similar to Prelude Ordering. (bsd3, data, library)2008-07-23AdrianHey
CTRex40.0Open records using closed type families. (bsd3, data, data-structures, library)2014-11-13AtzeVanDerPloeg
Cardinality70.0Measure container capacity. Use it to safely change container. (data, library)2010-01-20AndreySisoyev
Checked40.0Inbuilt checking for ultra reliable computing (bsd3, data, library)2012-11-05RobertOnslow
ClassyPrelude40.0Prelude replacement using classes instead of concrete types where reasonable (bsd3, control, data, library)2010-05-31SveinOveAas
ConsStream30.0Trivial re-export of Wouter Swierstra's Stream package, avoiding module name clash. (bsd3, data, library)2012-04-16ConalElliott
DCFL40.0Communication Free Learning-based constraint solver (data, library, mit)2015-07-08dpandya
DPutils80.0utilities for DP (bsd3, data, library)2019-03-27ChristianHoener
Data-Angle30.0Geometric angles (bsd3, data, library, math)2017-03-26deadmanswitch
Data-Hash-Consistent40.0Provide a simple consistent hashing mechanism (bsd3, data, library)2012-11-20BradClawsie
Data-Rope (deprecated in favor of data-rope)40.0Ropes, an alternative to (Byte)Strings. (data, deprecated, library)2010-05-29PierreEtienneMeunier
DataIndex30.0A package for adding index column to data files (data, library, mit, program)2016-10-09steven_yhw
DataVersion20.0Type safe data migrations (data, library, mit)2019-08-08agentultra
Digit (deprecated in favor of digit)40.0A data-type representing digits 0-9 (bsd3, data, deprecated, library)2011-09-06TonyMorris
DimensionalHash30.0An n-dimensional hash using Morton numbers. (algorithms, bsd3, data, library)2011-05-10GhassenHamrouni
Dish40.0Hash modules (currently Murmur3) (bsd3, data, library, program)2017-11-29zcourts
DistanceUnits40.0A comprehensive distance library (bsd3, data, library)2013-08-26MattGambogi
DynamicTimeWarp40.0Dynamic time warping of sequences. (data, lgpl, library, program)2015-02-05zombiecalypse
EnumContainers40.0Simple Enum-class-based int containers (bsd3, data, library)2010-11-22EyalLotem
EstProgress30.0Methods for estimating the progress of functions (bsd3, data, library)2015-08-10JamesCandy
EuroIT30.0Library for using euro currency, italian language (bsd3, data, library)2010-07-05PaoloVeronelli
Fin (deprecated)100.0Finite totally-ordered sets (bsd3, data, deprecated, library)2020-02-01
FiniteMap (deprecated in favor of containers)50.0A finite map implementation, derived from the paper: Efficient sets: a balancing act, S. Adams, Journal of functional programming 3(4) Oct 1993, pp553-562 (bsd4, data, deprecated, library)2007-03-06PepeIborra
FixedPoint-simple50.0Fixed point, large word, and large int numerical representations (types and common class instances) (bsd3, data, library)2014-06-24ThomasDuBuisson
Focus40.0Tools for focusing in on locations within numbers (data, library, mit)2011-12-24NateSoares
Foster50.0Utilities to generate and solve puzzles (data, mit, program)2015-01-19Jefffrey
Frames452.0Data frames For working with tabular data files (bsd3, data, library)2020-07-03AnthonyCowley
Frames-beam70.0A library for accessing Postgres tables as in-memory data structures. (bsd3, data, data-science, database, library)2018-09-02GagandeepBhatia
Frames-dsv40.0Alternative CSV parser for the Frames package (bsd3, data, library)2020-01-13AnthonyCowley
Frames-map-reduce40.0Frames wrapper for map-reduce-folds and some extra folds helpers. (bsd3, data, library)2020-09-27adamCS
Frames-streamly60.0A streamly layer for Frames I/O (bsd3, data, library)2020-11-18adamCS
HExcel82.25Create Excel files with Haskell (Excel, bsd3, data, library, spreadsheet, text)2020-03-14v0d1ch
HFrequencyQueue40.0A Queue with a random (weighted) pick function (data, gpl, library)2015-08-28Bellaz
HList212.0Heterogeneous lists (data, library, mit)2018-02-20AdamVogt, GwernBranwen
HMap90.0Fast heterogeneous maps and unconstrained typeable-like functionality. (bsd3, data, data-structures, library)2018-04-17AtzeVanDerPloeg
HSet60.0Faux heterogeneous sets (bsd3, data, library)2017-05-11athanclark
HaLeX170.0HaLeX enables modelling, manipulation and visualization of regular languages (data, library, program, public-domain)2017-02-10GwernBranwen, joaoSaraiva
HappyTree50.0Type Safe and End to End Decision Tree (bsd3, data, library)2018-01-08MarisaVeryMoe
HasCacBDD90.0Haskell bindings for CacBDD (data, gpl, library)2020-06-30m4lvin
Hayoo72.0The Hayoo! search engine for Haskell API search on hackage (data, mit, program, text)2012-03-01UweSchmidt
HiggsSet (deprecated)40.0A multi-index set with advanced query capabilites (bsd3, data, deprecated, library)2012-02-04LarsPetersen
Holumbus-Searchengine50.0A search and indexing engine. (data, library, mit, text)2012-03-01UweSchmidt
HsJudy50.0Judy bindings, and some nice APIs (bsd3, data, library)2008-03-07GwernBranwen
HulkImport60.0Easily bulk import CSV data to SQL Server (bsd3, data, library, program)2015-11-09smobs
IDynamic30.0Indexable, serializable form of Data.Dynamic (bsd3, data, library)2009-10-16AlbertoCorona
IORefCAS (deprecated in favor of atomic-primops)100.0Atomic compare and swap for IORefs and STRefs. (bsd3, data, deprecated, library)2013-05-07RyanNewton
IndexedList50.0Length- and element-indexed lists sitting somewhere between homogeneous and fully heterogeneous. (bsd3, data, library)2014-06-28kwf
InternedData30.0Data interning (with compact regions where possible) (bsd3, data, data-structures, library, natural-language-processing)2019-10-02ChristianHoener
Interpolation90.0Multiline strings, interpolation and templating. (data, library, text)2012-10-05VilleTirronen
Interpolation-maxs40.0Multiline strings, interpolation and templating. (data, library, text)2014-03-14MaxwellSwadling
IntervalMap832.0Containers for intervals, with efficient search. (bsd3, data, library)2020-06-08ChristophBreitkopf
IsNull70.0A typeclass to determine if a given value is null. (bsd3, data, library)2014-06-19jcristovao
Jdh50.0A Json implementation for Haskell, with JavaScript Values and Encoding/Decoding (data, library, mit)2017-02-25brunoczim
JuPyTer-notebook60.0JuPyTer notebook parser (bsd3, data, library, program)2017-11-21MichalGajda
LTree60.0Tree with only leaves carrying the data. (data, library, public-domain)2011-09-21RahulGopinath
Limit50.0Wrapper for data that can be unbounded (data, library, mit)2011-12-24NateSoares
ListZipper120.0Simple zipper for lists (bsd3, data, library)2011-10-31RyanIngram
MSQueue30.0Michael-Scott queue. (bsd3, data, library)2015-01-31julek
Map (deprecated)210.0Class of key-value maps (bsd3, data, deprecated, library)2020-09-05
Mapping60.0Mapping (agpl, data, library)2018-02-27Zaoqi
Measure40.0A library for units of measurement (bsd3, data, library)2009-11-11TonyMorris
Mecha40.0mecha are the most complex composite machines known to humanity, lets build them well! (bsd2, concurrency, control, data, library, network, system)2016-08-11CarterSchonwald
Mechs40.0mecha are the most complex composite machines known to humanity, lets build them well! (bsd2, concurrency, control, data, library, network, system)2016-08-11CarterSchonwald
MemoTrie2602.0Trie-based memo functions (bsd3, data, library)2019-11-30ConalElliott
MyPrimes30.0Generate all primes (data, library, mit, program)2015-08-05afonsomatos
NMap40.0A transparent nested Map structure (data, library)2016-12-02ACastello
NestedFunctor40.0Nested composition of functors with a type index tracking nesting. (bsd3, data, library)2014-06-28kwf
NewBinary30.0A binary I/O library (data, library)2009-10-16JeremyShaw
NineP90.09P2000 in pure Haskell (bsd3, data, library)2013-09-22DaveLeimbach, SergeyAlirzaev
NonEmpty40.0Library providing a non-empty list datatype, and total functions operating on it (bsd3, data, library)2009-03-19RobinGreen
NonEmptyList (deprecated in favor of semigroups)90.0A list with a length of at least one. (bsd3, data, deprecated, library)2010-08-28TonyMorris
NumInstances1740.0Instances of numeric classes for functions and tuples (bsd3, data, library)2014-09-26ConalElliott
NumLazyByteString (deprecated)50.0Num, Enum, Eq, Integral, Ord, Real, and Show instances for Lazy ByteStrings (bsd3, data, deprecated, library)2010-04-06ThomasDuBuisson
Object40.0Object oriented programming for haskell using multiparameter typeclasses. (apache, control, data, library)2014-05-15yokto
ObjectName1910.0Explicitly handled object names (bsd3, data, library)2015-12-22SvenPanne
Octree120.0Simple unbalanced Octree for storing data about 3D points (bsd3, data, library)2018-07-15MichalGajda
OddWord82.25Provides a wrapper for deriving word types with fewer bits. (bsd3, data, library)2018-04-11RobinKay
Omega90.0Integer sets and relations using Presburger arithmetic (bsd3, data, library)2014-05-03ChristopherRodrigues
OneTuple550.0Singleton Tuple (bsd3, data, library)2020-03-27JohnDorsey, phadej
Only4040.0The 1-tuple type or single-value "collection" (bsd3, data, library)2017-06-12HerbertValerioRiedel
OpenAFP180.0IBM AFP document format parser and generator (data, library, public-domain)2017-04-04AudreyTang
OpenAFP-Utils90.0Assorted utilities to work with AFP data streams (data, program, public-domain)2013-11-30AudreyTang
OptDir60.0The OptDir type for representing optimization directions. (bsd3, data, library, optimisation, optimization)2020-01-13MasahiroSakai
OrderedBits100.0Efficient ordered (by popcount) enumeration of bits (bsd3, data, library)2019-06-14ChristianHoener
PUH-Project60.0This is a package which includes Assignments, Email, User and Reviews modules for Programming in Haskell course. (bsd3, data, library)2016-01-21att
PathTree70.0A tree used to merge and maintain paths (bsd3, data, library)2016-07-16pjrt
Peano40.0simple Peano numbers (bsd3, data, library)2012-03-08AndrasSlemmer, FrancescoMazzoli
PeanoWitnesses50.0GADT type witnesses for Peano-style natural numbers. (bsd3, data, library)2014-06-28kwf
PerfectHash (deprecated in favor of perfecthash)50.0A perfect hashing library for mapping bytestrings to values. (bsd3, data, data-structures, deprecated, library)2016-04-29MarkWotton
Persistence200.0A versatile library for topological data analysis. (bsd3, data, library, math)2019-08-19Ebanflo
Piso50.0Partial isomorphisms (bsd3, data, library)2017-05-09MartijnVanSteenbergen
PrimitiveArray210.0Efficient multidimensional arrays (bsd3, data, library)2019-08-30ChristianHoener
PrimitiveArray-Pretty40.0Pretty-printing for primitive arrays (bsd3, data, library)2017-03-03ChristianHoener
QLearn52.0A library for fast, easy-to-use Q-learning. (data, library, mit)2016-05-01dpandya
QuadEdge50.0QuadEdge structure for representing triangulations (bsd3, data, library)2010-06-26NealAlexander
QuadTree60.0QuadTree library for Haskell, with lens support. (bsd3, data, game, library)2015-08-09Kron
RFC1751 (deprecated in favor of rfc1751)80.0RFC-1751 library for Haskell (data, deprecated, library, public-domain)2018-08-13jprupp
RLP30.0RLP serialization as defined in Ethereum Yellow Paper (data, lgpl, library, parsing)2018-12-10jasagredo
Range60.0Data structure for managing ranges (bsd3, data, library)2013-04-19ThomasEding
Ranged-sets662.25Ranged sets for Haskell (bsd3, data, library)2019-03-11PaulJohnson
Ref50.0Generic Mutable Ref Abstraction Layer (bsd3, data, library)2013-03-28CarterSchonwald
RefSerialize120.0Write to and read from ByteStrings maintaining internal memory references (bsd3, data, database, library, parsing)2017-02-06AlbertoCorona
SG50.0Small geometry library for dealing with vectors and collision detection (bsd3, data, library, math)2009-03-17NeilBrown
SGplus40.0(updated) Small geometry library for dealing with vectors and collision detection (bsd3, data, library, math)2016-09-01donomii
SciBaseTypes60.0Base types and classes for statistics, sciences and humanities (bsd3, data, library)2019-03-27ChristianHoener
SegmentTree60.0Data structure for querying the set (or count) of intervals covering given point (bsd3, data, library)2012-10-29AlexandruScvortov, DmitryAstapov
Semigroup50.0A semigroup (bsd3, data, library)2011-04-13TonyMorris
Set60.0See README for more info (data, library, mpl)2019-12-27
ShortestPathProblems70.0grammars for TSP and SHP (bsd3, data, library)2017-03-06ChristianHoener
SizeCompare40.0Fast size comparison for standard containers. (data, library)2010-03-02BramSchuur
SpinCounter30.0Lock free Spin Counter (bsd3, data, library)2015-01-24julek
StateVar9590.0State variables (bsd3, data, library)2020-12-29EdwardKmett, SvenPanne, phadej, ryanglscott
StateVar-transformer40.0State variables (bsd3, data, library)2014-03-06seagull
Strafunski-ATermLib40.0An abstract data type designed for the exchange of tree-like data structures (bsd3, data, library)2013-05-03JamesKoppel
Stream1070.0A library for manipulating infinite lists. (bsd3, data, library)2015-02-06WouterSwierstra
SuffixStructures30.0Suffix array construction (bsd3, data, data-structures, library, program)2015-05-07ChristianHoener
TCache220.0A Transactional cache with user-defined persistence (bsd3, data, database, library)2017-02-11AlbertoCorona
Tainted40.0Tainted type, and associated operations (bsd3, control, data, library, monads, trans)2015-05-27RossMeikleham
Tape50.0Bidirectionally infinite streams, akin to the tape of a Turing machine. (bsd3, data, library)2014-06-28kwf
Tensor370.0Tensor data types (bsd3, data, library)2018-07-25SvenPanne
Transhare70.0A library to apply transformation to containers so as to maximize sharing of unchanged subcomponents. (bsd3, data, library)2011-06-19ChrisKuklewicz
TreeCounter50.0Wait-free Tree Counter (bsd3, data, library)2015-01-24julek
Treiber40.0Lock free Treiber stack (bsd3, data, library)2015-01-31julek
TypeNat60.0Some Nat-indexed types for GHC (data, library, mit)2017-11-09alexvieth
Unique4372.0It provides the functionality like unix "uniq" utility (bsd3, data, library)2020-08-08kapral
Validation (deprecated in favor of validation)110.0A data-type like Either but with an accumulating Applicative (bsd3, data, deprecated, library)2012-08-14TonyMorris
Vec150.0Fixed-length lists and low-dimensional linear algebra. (bsd3, data, library, math)2014-08-06ScottDillard
Vec-Boolean40.0Provides Boolean instances for the Vec package (bsd3, data, library, math)2012-08-05TobiasBexelius
VecN50.0a simple peano-indexed vector type (bsd3, data, library)2012-03-03AndrasSlemmer
WAVE80.0WAVE audio file IO library (bsd3, data, library, program, sound)2020-04-02BartonMassey
WMSigner60.0WebMoney authentication module (cryptography, data, library, mit)2014-11-26triplepointfive
XML60.0Extensible Markup Language (bsd3, data, library)2018-08-19
Z-Data860.0Array, vector and text (bsd3, data, library)2021-01-12winterland
Z-IO570.0Simple and high performance IO toolkit for Haskell (bsd3, data, library)2021-01-12winterland
Z-MessagePack180.0MessagePack (bsd3, data, library)2021-01-12winterland
Z-YAML460.0YAML tools (bsd3, data, library)2021-01-12winterland
ZipFold40.0Zipping folds (bsd3, data, library)2009-07-12ConalElliott
abcBridge70.0Bindings for ABC, A System for Sequential Synthesis and Verification (bsd3, data, library)2015-12-12AaronTomb, KevinQuick, RobertDockins
abeson30.0interconversion between aeson and bson. (data, library, mit)2014-09-19HirotomoMoriwaki
abides30.0Simple boolean tests to see if a value abides by certain properties (bsd3, data, library, testing)2019-09-23athanclark
abstract-deque3690.0Abstract, parameterized interface to mutable Deques. (bsd3, data, library)2014-02-05RyanNewton
abstract-deque-tests170.0A test-suite for any queue or double-ended queue satisfying an interface (bsd3, data, library)2014-02-05RyanNewton
ac-machine40.0Aho-Corasick string matching algorithm in Haskell (bsd3, data, library)2013-09-30YutaTaniguchi
ac-machine-conduit40.0Drive Aho-Corasick machines in Conduit pipelines (bsd3, data, library)2013-09-30YutaTaniguchi
accelerate942.5An embedded language for accelerated array processing (accelerate, bsd3, compilers-interpreters, concurrency, data, library, parallelism)2020-08-28ManuelChakravarty, TrevorMcDonell
accelerate-bignum80.0Fixed-length large integer arithmetic for Accelerate (accelerate, bsd3, compilers-interpreters, concurrency, data, library, parallelism)2020-08-28TrevorMcDonell
accelerate-cuda (deprecated in favor of accelerate-llvm-ptx)230.0Accelerate backend for NVIDIA GPUs (bsd3, compilers-interpreters, concurrency, data, deprecated, library, parallelism)2017-03-31ManuelChakravarty, TrevorMcDonell
accelerate-examples130.0Examples using the Accelerate library (accelerate, bsd3, compilers-interpreters, concurrency, data, library, parallelism)2020-08-28ManuelChakravarty, TrevorMcDonell
accelerate-fft150.0FFT using the Accelerate library (accelerate, bsd3, compilers-interpreters, concurrency, data, library, math, parallelism)2020-08-28TrevorMcDonell
accelerate-io150.0Convert between Accelerate arrays and raw pointers (accelerate, bsd3, compilers-interpreters, concurrency, data, library, parallelism)2020-08-28ManuelChakravarty, TrevorMcDonell
accelerate-io-JuicyPixels20.0Convert between Accelerate arrays and JuicyPixels images (accelerate, bsd3, data, library)2020-08-28TrevorMcDonell
accelerate-io-array70.0Convert between Accelerate and array (accelerate, bsd3, data, library)2020-08-28TrevorMcDonell
accelerate-io-bmp100.0Convert between Accelerate arrays and BMP images (accelerate, bsd3, data, library)2020-08-28TrevorMcDonell
accelerate-io-bytestring140.0Convert between Accelerate and ByteString (accelerate, bsd3, data, library)2020-08-28TrevorMcDonell
accelerate-io-cereal30.0Binary serialisation of Accelerate arrays using cereal (accelerate, bsd3, data, library)2020-08-28TrevorMcDonell
accelerate-io-repa90.0Convert between Accelerate and Repa arrays (accelerate, bsd3, data, library)2020-08-28TrevorMcDonell
accelerate-io-serialise200.0Binary serialisation of Accelerate arrays using serialise (accelerate, bsd3, data, library)2021-01-05TrevorMcDonell
accelerate-io-vector90.0Convert between Accelerate and vector (accelerate, bsd3, data, library)2020-08-28TrevorMcDonell
accelerate-llvm350.0Accelerate backend component generating LLVM IR (accelerate, bsd3, compilers-interpreters, concurrency, data, library, parallelism)2020-08-28TrevorMcDonell
accelerate-llvm-native360.0Accelerate backend for multicore CPUs (accelerate, bsd3, compilers-interpreters, concurrency, data, library, parallelism)2020-08-28TrevorMcDonell
accelerate-llvm-ptx282.0Accelerate backend for NVIDIA GPUs (accelerate, bsd3, compilers-interpreters, concurrency, data, library, parallelism)2020-08-28TrevorMcDonell
accelerate-random (deprecated in favor of mwc-random-accelerate)40.0Generate Accelerate arrays filled with high quality pseudorandom numbers (bsd3, data, deprecated, library)2015-10-16TrevorMcDonell
access-token-provider70.0Provides Access Token for Services (bsd3, data, library)2018-05-01mtesseract
active2780.0Abstractions for animation (bsd3, data, library)2019-10-20BrentYorgey, RyanYates, jeffreyrosenbluth, bergey, cchalmers
adaptive-containers90.0Self optimizing container types (bsd3, data, library)2009-04-11DonaldStewart
adaptive-tuple40.0Self-optimizing tuple types (bsd3, data, library)2010-03-16JohnLato
aeson-applicative30.0make To/From JSOn instances from an applicative description (data, library, mit)2015-06-24GregWeber
aeson-bson40.0Mapping between Aeson's JSON and Bson objects. (data, library)2013-05-24AlfredoDiNapoli
aeson-casing970.0Tools to change the formatting of field names in Aeson instances. (data, library, mit)2019-03-28andrewrademacher
aeson-extra700.0Extra goodies for aeson (aeson, bsd3, data, library)2019-10-21phadej
aeson-helper20.0Aeson helper func (aeson, bsd3, data, library)2020-08-13Lupino
aeson-injector162.0Injecting fields into aeson values (data, json, library, mit, web)2020-11-30NCrashed
aeson-iproute120.0Aeson instances for iproute types (bsd3, data, library)2020-11-08sickmind, MaxGabriel
aeson-lens100.0Lens of Aeson (bsd3, data, library)2013-02-14HideyukiTanaka
aeson-optics20.0Law-abiding optics for aeson (data, json, library, mit, optics)2019-09-22phadej
aeson-options (deprecated)50.0Options to derive FromJSON/ToJSON instances (data, deprecated, json, library, mit)2018-10-01serokell
aeson-schema250.0Haskell JSON schema validator and parser generator (data, library, mit)2020-04-09MateuszKowalczyk, TimBaumann, ChristianMarie, ocramz
aeson-t30.0Transform JSON (data, library, mit)2015-04-28begriffs
aeson-utils90.0Utilities for working with Aeson. (bsd3, data, library)2015-05-25AdamBergmark, ErikHesselink
aeson-value-parser160.0API for parsing "aeson" JSON tree into Haskell types (data, json, library, mit, parsing)2020-10-01NikitaVolkov
aeson-via20.0Wrappers to derive-via Aeson ToJSON/FromJSON typeclasses (bsd3, data, library)2020-05-08ejconlon
aeson-with20.0withXField combinators for aeson (bsd3, data, library, mit)2020-08-09locallycompact
aeson-yak60.0Handle JSON that may or may not be a list, or exist (data, library, mit)2017-12-20tejon
affinely-extended30.0 (data, library, mit)2017-04-05clinton
afis40.0Anti-forensic Information Splitter (bsd3, cryptography, data, library)2013-10-28VincentHanquez
aig130.0And-inverter graphs in Haskell. (bsd3, data, library)2018-06-12AaronTomb, KevinQuick, RobertDockins
aip100.0Aeronautical Information Package (AIP) (aviation, bsd3, data, library, program)2019-03-04qfpl
alfred-margaret50.0Fast Aho-Corasick string searching (bsd3, data, library, text)2020-10-19rkrzr
algebraic-classes130.0Conversions between algebraic classes and F-algebras. (bsd3, data, generics, library, math)2020-01-06SjoerdVisscher
algo-s40.0An implementation of Knuth's algorithm S. (apache, data, library, program)2016-08-16EricRochester
align60.0Sequence alignment algorithms. (bsd3, data, library)2015-07-16literon
alist30.0lists with O(1) append (bsd3, data, library)2019-08-03AlanHawkins
alphachar50.0A character between a-z (bsd3, data, library)2018-08-09TonyMorris, qfpl
alpino-tools (deprecated)30.0Alpino data manipulation tools (data, deprecated, library, natural-language-processing, program)2012-04-07DanielDeKok
altcomposition40.0Alternative combinators for unorthodox function composition (bsd3, data, library)2016-07-26jcristovao
alternative-io (deprecated in favor of io-choice)40.0IO as Alternative instance (deprecated) (bsd3, data, deprecated, library)2012-04-23KazuYamamoto
always140.0provides a typeclass that is always satisfied (bsd3, data, library)2021-01-13chessai
annotated-fix20.0A fixpoint of a functor that can be annotated (bsd3, data, library)2019-05-21GuerricChupin
anonymous-sums60.0Anonymous sum types (bsd3, data, library)2016-12-23OmariNorman
anonymous-sums-tests40.0QuickCheck functions to accompany the anonymous-sums package (bsd3, data, library)2014-07-30OmariNorman
apache-md552.0Apache specific MD5 digest algorighm. (bsd3, cryptography, data, library)2015-06-21PeterTrsko
apart70.0Get all your structure and rip it apart. (bsd3, control, data, library, program)2018-09-28iokasimovmt
apecs622.25Fast Entity-Component-System library for game programming (bsd3, control, data, game, library)2020-06-12jonascarpay
apecs-stm30.0STM stores for apecs (bsd3, control, data, game, library)2020-11-12jonascarpay
app-lens40.0applicative (functional) bidirectional programming beyond composition chains (bsd3, data, lenses, library)2016-09-25kztk
appc30.0app container types and tools (data, library, mit, program)2015-04-10wereHamster
applicative-numbers130.0Applicative-based numeric instances (bsd3, data, library, numerical)2014-04-09ConalElliott
approximate-equality240.0Newtype wrappers for approximate equality (bsd3, data, library)2014-08-16GregoryCrosswhite
arbor-lru-cache51.25LRU cache based on STM (concurrency, data, library, mit)2019-10-03newhoggy, arbornetworks
arff160.0Generate Attribute-Relation File Format (ARFF) files (bsd3, data, library, text)2008-11-18StefanKersten
arith-encode (deprecated in favor of cantor-pairing, finitary, smallcheck)1310.0A practical arithmetic encoding (aka Godel numbering) library. (bsd3, data, deprecated, library, serialization, test, testing)2020-02-09emc2, Bodigrim
armor40.0Prevent serialization backwards compatibility problems using golden tests (bsd3, data, library, testing)2018-03-14DougBeardsley
array-builder30.0Builders for arrays (bsd3, data, library)2020-11-18andrewthad
array-chunks70.0Lists of chunks (bsd3, data, library)2020-11-18andrewthad
array-list22.0IsList instances of Array for OverloadedLists extension (array, data, library, list, mit)2020-06-23epoberezkin
array-primops60.0Extra foreign primops for primitive arrays (bsd3, data, library)2017-08-10AndrasKovacs
array-utils (deprecated)30.0Primitive functions for updating many elements in mutable arrays at once (bsd3, data, data-structures, deprecated, library)2011-01-29AlexMason
arraylist40.0Memory-efficient ArrayList implementation (bsd3, data, library)2018-10-25chessai
ascii82.0The ASCII character set and encoding (apache, data, library, text)2020-05-20MichaelSnoyman, chris_martin, Monoid_Mary
ascii-case40.0ASCII letter case (apache, data, library, text)2020-05-20chris_martin, Monoid_Mary
ascii-char40.0A Char type representing an ASCII character (apache, data, library, text)2020-05-20chris_martin, Monoid_Mary
ascii-group40.0ASCII character groups (apache, data, library, text)2020-05-20chris_martin, Monoid_Mary
ascii-predicates40.0Various categorizations of ASCII characters (apache, data, library, text)2020-05-20chris_martin, Monoid_Mary
ascii-superset40.0Representing ASCII with refined supersets (apache, data, library, text)2020-05-20chris_martin, Monoid_Mary
ascii-table90.0ASCII table (bsd3, data, library)2019-03-15mitchellwrosen
ascii-th50.0Template Haskell support for ASCII (apache, data, library, text)2020-05-20chris_martin, Monoid_Mary
ascii-vector-avc50.0Process Ascii Vectors for Advantest 93k (data, gpl, library, program)2014-10-15m
ascii85-conduit30.0Conduit for encoding ByteString into Ascii85 (bsd3, conduit, data, library)2014-01-26KazuoKoga
asn30.0asn type and encoding/decoding (bsd3, data, library)2018-06-13chessai
asn1-data (deprecated in favor of asn1-encoding)240.0ASN1 data reader and writer in RAW, BER and DER forms (bsd3, data, deprecated, library)2015-09-07VincentHanquez
asn1-encoding5331.75ASN1 data reader and writer in RAW, BER and DER forms (bsd3, data, library)2019-09-29VincentHanquez
asn1-parse4790.0Simple monadic parser for ASN1 stream types. (bsd3, data, library)2019-09-29VincentHanquez
asn1-types5640.0ASN.1 types (bsd3, data, library)2020-03-24VincentHanquez
assoc6780.0swap and assoc: Symmetric and Semigroupy Bifunctors (bsd3, data, library)2020-08-09phadej
assoc-list72.0Association lists (lists of tuples) (data, library, mit)2018-09-24chris_martin, Monoid_Mary
assoc-listlike50.0Association lists (list-like collections of tuples) (data, library, mit)2018-09-24chris_martin, Monoid_Mary
ast-path30.0vocabulary representation for predicting program properties (bsd3, data, library, natural-language-processing)2019-06-17ijaketak
astar90.0General A* search algorithm. (bsd3, data, library)2016-03-29CaleGibbard, JohannesWeiss
aterm50.0serialisation for Haskell values with sharing support (data, gpl, library, parsing)2020-10-06ChristianMaeder
atlassian-connect-descriptor180.0Code that helps you create a valid Atlassian Connect Descriptor. (apache, data, library)2019-10-08RobertMassaioli, eero, AshleyValent
atomic-primops3772.0A safe approach to CAS and other atomic ops in Haskell. (bsd3, data, library)2020-10-03BrandonSimmons, GregoryCollins, RyanNewton, ryanglscott, peter_fogg, chchen
atomic-primops-foreign30.0An atomic counter implemented using the FFI. (bsd3, data, library)2014-08-18RyanNewton
attempt (deprecated in favor of exceptions)90.0Concrete data type for handling extensible exceptions as failures. (deprecated) (bsd3, data, deprecated, failure, library)2014-03-26MichaelSnoyman
atto-lisp30.0Efficient parsing and serialisation of S-Expressions. (bsd3, data, library, text)2018-09-24ThomasSchilling
attoparsec-arff40.0An ARFF file parser using Attoparsec (ai, data, gpl, library, text)2012-02-09PaulWilson
attoparsec-binary700.0Binary processing extensions to Attoparsec. (bsd3, data, library)2012-09-22AndrewDrake
attoparsec-conduit (deprecated in favor of conduit-extra)290.0Consume attoparsec parsers via conduit. (deprecated) (conduit, data, deprecated, library, mit, parsing)2014-04-02MichaelSnoyman
attoparsec-iteratee30.0An adapter to convert attoparsec Parsers into blazing-fast Iteratees (bsd3, data, library)2011-11-28GregoryCollins, JohnLato
attoparsec-varword40.0Variable-length integer decoding for Attoparsec (data, lgpl, library)2018-05-03ch3pjw
attosplit30.0Split a lazy bytestring at boundaries defined by an attoparsec parser (bsd3, data, library)2011-12-19YitzGale
audiovisual70.0A battery-included audiovisual framework (bsd3, data, library, records)2015-03-21FumiakiKinoshita
automata30.0automata (bsd3, data, library, math)2019-01-22chessai
avl-static60.0A compile-time balanced AVL tree. (bsd3, data, library)2014-01-12FedericoLebron
avro652.25Avro serialization support for Haskell (bsd3, data, library)2020-04-14newhoggy, alexeyraga, haskellworks
avro-piper60.0Tool for decoding avro (bsd3, data, library, program)2020-01-13newhoggy, haskellworks
b-tree90.0Immutable disk-based B* trees (bsd3, data, library)2018-11-04BenGamari
bank-holidays-england190.0Calculation of bank holidays in England and Wales (bsd3, data, library)2020-11-18dcturner, dten
barbies-th320.0Create strippable HKD via TH (bsd3, data, generics, library)2021-01-12FumiakiKinoshita
base16401.5Fast RFC 4648-compliant Base16 encoding (bsd3, data, library)2020-09-03topos
base16-bytestring13742.0RFC 4648-compliant Base16 encodings for ByteStrings (bsd3, data, library)2020-11-05BryanOSullivan, HerbertValerioRiedel, MikhailGlushenkov, topos
base16-lens20.0Optics for the Base16 library (bsd3, data, library)2020-07-25topos
base32210.0Fast RFC 4648-compliant Base32 encoding (bsd3, data, library)2020-07-21topos
base32-bytestring50.0Fast base32 and base32hex codec for ByteStrings (bsd3, codec, data, library)2013-12-01SamTruzjan
base32-lens40.0Optics for the Base32 library (bsd3, data, library)2020-02-16topos
base32-z-bytestring90.0Fast z-base32 and z-base32hex codec for ByteStrings (bsd3, codec, data, library)2019-04-09AlfredoDiNapoli, RenzoCarbonara
base32string100.0Fast and safe representation of a Base-32 string (data, library, mit)2015-05-27solatis
base58-bytestring3390.0Implementation of BASE58 transcoding for ByteStrings (bytestrings, data, library, public-domain)2015-01-30AlekseyUymanov
base58string50.0Fast and safe representation of a Base-58 string (data, library, mit)2015-05-10solatis
base6260.0Base62 encoding and decoding (bsd3, data, library)2020-12-18andrewthad
base644330.0Fast RFC 4648-compliant Base64 encoding (bsd3, data, library)2020-07-03topos
base64-bytes40.0Base64 encoding of byte sequences (bsd3, data, library)2020-06-01andrewthad
base64-bytestring17262.0Fast base64 encoding and decoding for ByteStrings (bsd3, data, library)2020-11-15BryanOSullivan, HerbertValerioRiedel, MikhailGlushenkov, topos
base64-bytestring-type3150.0A newtype around ByteString, for base64 encoding (bsd3, data, library)2019-03-27phadej
base64-conduit (deprecated in favor of conduit-combinators)50.0Base64-encode and decode streams of bytes. (deprecated) (bsd3, conduit, data, deprecated, library)2014-03-21MichaelSnoyman
base64-lens60.0Optics for the Base64 library (bsd3, data, library)2020-02-19topos
baserock-schema50.0Baserock Definitions Schema (bsd3, data, library, program)2018-07-03locallycompact
batch60.0Simplify queuing up data and processing it in batch. (bsd3, data, library)2018-01-27AlexanderThiemann
bcp4760.0Language tags as specified by BCP 47 (data, data-structures, library, mit)2020-12-09PatrickBrisbin, 5outh, dukerutledge, cdparks, cbeav, halogenandtoast
bcrypt200.0Haskell bindings to the bcrypt password hash (bsd3, cryptography, data, library)2017-12-31AndrewMiller
bdelta (deprecated in favor of bytestring-delta)50.0Simple, fast binary diff/patch (data, deprecated, library, mit)2012-02-22JoeyAdams
beamable70.0Generic serializer/deserializer with compact representation (bsd3, data, library, serialization)2014-06-03JohnLato, MichaelBaikov
bencoding220.0A library for encoding and decoding of BEncode data. (bsd3, data, library)2019-10-27SamTruzjan, SergeyVinokurov
bert90.0BERT implementation (bsd3, data, library)2016-04-05MariusEriksen, RomanCheplyaka, manzyuk
between90.0Function combinator "between" and derived combinators (bsd3, data, library)2016-01-09PeterTrsko
bff90.0Bidirectionalization for Free! (POPL'09) (data, library, public-domain)2011-03-22DanielSeidel, JanisVoigtlaender, JoachimBreitner
bff-mono90.0"Bidirectionalization for Free" for Monomorphic Transformations (bsd3, data, lenses, library)2014-08-14kztk
bidispec40.0Specification of generators and parsers (data, library)2010-10-05DavidLeuschner, StefanWehr
bidispec-extras40.0Extra helper functions for bidirectional specifications (data, library)2010-10-05StefanWehr
bifunctors15502.5Bifunctors (bsd3, data, functors, library)2020-12-30EdwardKmett, EricMertens, ryanglscott
bimap3950.0Bidirectional mapping between two key types (bsd3, data, library)2019-06-14StuartCook, joel_williamson
bimap-server40.0Two-column database server. (bsd3, data, library)2015-07-06DanielDiaz
bimaps50.0bijections with multiple implementations. (bsd3, data, library)2017-03-03ChristianHoener
bin430.0Bin: binary natural numbers. (data, dependent-types, gpl, library, math, singletons)2019-12-13phadej
binary7420.0Binary serialisation for Haskell values using lazy ByteStrings (bsd3, data, library, parsing)2018-08-02DonaldStewart, IanLynagh, LennartKolmodin
binary-bits160.0Bit parsing/writing on top of binary. (bsd3, data, library, parsing)2015-01-09LennartKolmodin
binary-communicator40.0Flexible way to ease transmission of binary data. (bsd3, data, library)2015-09-14SoenkeHahn, YvesPares
binary-derive50.0Automatic deriving of Binary using GHC.Generics (data, gpl, library)2011-11-05JaredHance
binary-enum30.0Simple wrappers around enum types (bsd3, data, library)2016-01-16tolysz
binary-ext80.0An alternate with strong-typed errors for `Data.Binary.Get` monad from `binary` package. (data, library, parsing)2018-06-01warlock
binary-generic40.0Generic binary serialisation using binary and syb. (bsd3, data, library, parsing)2012-08-07LarsPetersen
binary-ieee754130.0Backport ieee754 float double combinators to older binary (bsd3, data, library)2016-10-24winterland
binary-indexed-tree40.0Binary Indexed Trees (a.k.a. Fenwick Trees). (data, library)2012-10-10MaxwellSayles
binary-io272.0Read and write values of types that implement Binary (bsd3, data, io, library, parsing)2020-12-26vapourismo
binary-list70.0Lists of length a power of two. (bsd3, data, library)2016-07-07DanielDiaz
binary-orphans3720.0Compatibility package for binary; provides instances (binary, bsd3, compatibility, data, library, parsing)2019-05-13phadej
binary-parsers250.0Extends binary with parsec/attoparsec style parsing combinators. (bsd3, data, library)2019-06-26winterland
binary-protocol40.0Monad to ease implementing a binary network protocol. (bsd3, data, library)2009-09-04GregoryCrosswhite
binary-protocol-zmq50.0Monad to ease implementing a binary network protocol over ZeroMQ (bsd3, data, library, network)2010-08-02NicolasTrangez
binary-shared150.0Sharing for the binary package (data, library)2013-05-04HamishMackenzie, JuergenNicklischFranken
binary-state50.0Simple wrapper around Data.Binary, which adds StateT to Get/Put monads. (bsd3, data, library)2011-09-30IlyaPortnov
binary-store (deprecated)30.0Format to store data using the binary transform. (bsd3, data, deprecated, library)2015-01-14DanielDiaz
binary-streams50.0data serialization/deserialization io-streams library (bsd3, data, io-streams, library)2015-05-07GregoryCollins, petterb
binary-strict570.0Binary deserialisation using strict ByteStrings (bsd3, data, library, parsing)2020-04-11AdamLangley, DominicSteinitz
binary-tagged890.0Tagged binary serialisation. (bsd3, data, library)2020-05-16phadej
binary-typed (deprecated)70.0Type-safe binary serialization (bsd2, data, deprecated, library, serialization)2015-12-19quchen
binary-varint60.0VarInt encoding/decoding via Data.Binary (bsd3, data, library)2019-05-23KimAltintop, jkarni
binarydefer30.0Binary serialization with deferred loading (bsd3, data, library)2014-03-13NeilMitchell
bind-marshal60.0Data marshaling library that uses type level equations to optimize buffering. (bsd3, data, library)2011-10-30CoreyOConnor
bindynamic60.0A variation of Data.Dynamic.Dynamic with a Binary instance (data, gpl, library)2018-03-26lspitzner
bini72.0A collection of various methods for reading and writing bini files. (bsd3, configuration, data, library)2016-01-22TWeise
bit-protocol52.0Encode binary protocols with some odd bit numbers into a bytestring (bits, bsd3, bytes, data, library, parsing, protocols)2018-07-30k_bx
bit-vector30.0Simple bit vectors for Haskell (bit-vectors, bsd3, data, library)2015-03-24AdamFoltzer
bitarray980.0Mutable and immutable bit arrays (bsd3, data, library)2014-08-12BalazsKomuves
bitmap100.0A library for handling and manipulating bitmaps (rectangular pixel arrays). (bsd3, data, graphics, library)2012-02-13BalazsKomuves
bitmap-opengl70.0OpenGL support for Data.Bitmap. (bsd3, data, graphics, library)2014-03-19BalazsKomuves
bitmaps50.0Bitmap library (bsd3, codec, data, graphics, library)2014-11-30ByronJohnson
bits372.0Various bit twiddling and bitwise serialization primitives (bsd3, data, library, serialization)2019-05-02EdwardKmett, EricMertens, ryanglscott
bits-atomic290.0Atomic bit operations on memory locations for low-level synchronization (bsd3, concurrency, data, foreign, library)2010-09-05GabrielWicke
bits-bytestring40.0Bits instance for bytestrings. (bsd3, data, library)2016-03-25oldmanmike
bits-bytestring-lazy30.0Bits instance for lazy bytestrings. (bsd3, data, library)2016-09-07semaj
bits-conduit40.0Bitstream support for Conduit (bsd3, conduit, data, library)2012-06-29HideyukiTanaka
bits-extra210.0Useful bitwise operations (bit, bsd3, data, library)2020-04-14newhoggy, haskellworks, GeorgeWilson
bits-extras40.0Efficient high-level bit operations not found in Data.Bits (bsd3, data, library)2010-09-20GabrielWicke
bitstream100.0Fast, packed, strict and lazy bit streams with stream fusion (data, library, public-domain)2020-09-09MasatakeDaimon
bitstring60.0Lazy bit strings (bsd3, data, library)2010-08-01BalazsKomuves
bitvec532.0Space-efficient bit vectors (bit-vectors, bsd3, data, library, public-domain)2020-11-23JamesCook, Bodigrim
bitwise1670.0fast multi-dimensional unboxed bit packed Bool arrays (bit-vectors, bsd3, data, data-structures, library)2018-04-26ClaudeHeilandAllen
bitwise-enum280.0Bitwise operations on bounded enumerations (bsd3, data, data-structures, foreign, library)2021-01-06jnbooth
blaze-builder7050.0Efficient buffered output. (bsd3, data, library, text)2021-01-19JasperVanDerJeugt, LeonSmith, SimonMeier
blaze-builder-conduit (deprecated in favor of conduit-extra)330.0Convert streams of builders to streams of bytestrings. (deprecated) (bsd3, conduit, data, deprecated, library)2014-04-02MichaelSnoyman
blaze-builder-enumerator90.0Enumeratees for the incremental conversion of builders to bytestrings. (bsd3, data, enumerator, library)2015-04-01MichaelSnoyman, SimonHengel, SimonMeier, ThomasSutton
blazeT60.0A true monad (transformer) version of the blaze-markup and blaze-html libraries (data, library, mit, text, web)2017-01-15johannesgerer
bloomfilter790.0Pure and impure Bloom Filter implementations. (bsd3, data, library)2015-05-19BryanOSullivan
bloomfilter-redis62.0Distributed bloom filters on Redis (using the Hedis client). (bsd3, data, library)2019-06-25hesiod
boltzmann-samplers100.0Uniform random generators (data, generic, library, mit, random)2018-04-01lyxia
bond-haskell70.0Runtime support for BOND serialization (bsd3, data, library, parsing)2016-11-26blaze
bool-extras60.0A fold function for Bool (bsd3, data, library)2014-04-04TomLokhorst
boolean-list50.0convert numbers to binary coded lists (data, gpl, library)2017-10-26AlanHawkins
boolean-normal-forms80.0Boolean normal form: NNF, DNF & CNF (data, library, mit)2019-12-04phadej
boombox50.0Chronokinetic stream sources and incremental consumers (bsd3, data, library)2016-02-08FumiakiKinoshita
boring50.0Boring and Absurd types (bsd3, data, library)2019-12-13phadej
both50.0Like Maybe, but with a different Monoid instance. (data, library, mit)2020-05-17barrucadu
bounded-array40.0Arrays with a value for every index (bsd3, data, library)2018-10-15puffnfresh
bounded-queue20.0A strict, immutable, thread-safe, single-ended, bounded queue. (bsd3, data, library)2019-05-06fosskers
boundingboxes50.0A generic boundingbox for an arbitrary vector (bsd3, data, library)2015-03-14FumiakiKinoshita
browscap60.0A reader and interface for the Browser Capabilities Project data files. (bsd3, data, library, web)2017-04-30davean
bsb-http-chunked3960.0Chunked HTTP transfer encoding for bytestring builders (bsd3, data, library, network)2018-09-29sjakobi
bson890.0BSON documents are JSON-like objects with a standard binary encoding. (apache, data, library)2020-03-23FedorGogolev, GregWeber, MaximMitroshin, TonyHannan, VictorDenisov
bson-generic70.0Generic functionality for BSON (bsd3, data, library)2020-08-08PetrPilar
bson-generics (deprecated in favor of bson-generic)40.0Generics functionality for BSON (bsd3, data, deprecated, library)2012-01-26PetrPilar
bson-mapping40.0Mapping between BSON and algebraic data types. (data, library)2017-03-05FrancescoMazzoli, ak3n
bspack40.0A simple and fast bytestring packer (bsd3, data, library)2014-12-02nicolasdp
btree60.0B-Tree on Unmanaged Heap (bsd3, data, library)2018-11-09andrewthad, chessai
buffer70.0Simple mutable low-level buffer for IO (data, library, mit)2017-11-01NikitaVolkov
buffer-builder200.0Library for efficiently building up buffers, one piece at a time (bsd3, data, library)2018-10-12chadaustin, afriesen
buffer-builder-aeson60.0Serialize Aeson values with Data.BufferBuilder (data, library, mit)2015-11-02chadaustin, afriesen
buildable60.0Typeclass for builders of linear data structures (data, library, mit)2015-03-10IvanMiljenovic
builder20.0bounded ByteArray builder type (bsd3, data, library)2019-09-13chessai
bv90.0Bit-vector arithmetic library (bit-vectors, bsd3, data, library)2018-03-11IagoAbal
bv-embed20.0Define embeddings of small bit vectors into larger ones (bsd3, data, library)2019-01-27benselfridge
bv-little222.0Efficient little-endian bit vector library (bit-vectors, bsd3, data, library)2019-10-09recursion_ninja
byte-order340.0Portable big-endian and little-endian conversions (bsd3, data, library)2020-01-06andrewthad
byteable2710.0Type class for sequence of bytes (bsd3, data, library)2013-06-28VincentHanquez
bytebuild530.0Serialize to a small byte arrays (bsd3, data, library)2020-11-06andrewthad
bytehash40.0Universal hashing of bytes (bsd3, data, library)2020-04-30andrewthad
bytelog30.0Fast logging (bsd3, data, library)2020-03-09andrewthad
bytes2312.0Sharing code for serialization between binary and cereal (bsd3, data, library, serialization)2020-02-03EdwardKmett, EricMertens, ryanglscott
byteset30.0Set of bytes. (bsd3, data, library)2015-07-07DanielDiaz
byteslice230.0Slicing managed and unmanaged memory (bsd3, data, library)2020-10-15andrewthad
bytesmith500.0Nonresumable byte parser (bsd3, data, library)2020-07-27andrewthad
bytestring3442.75Fast, compact, strict and lazy byte strings with a list interface (bsd3, data, library)2021-01-06BenGamari, DonaldStewart, DuncanCoutts, HerbertValerioRiedel, IanLynagh, SylvainHenry, Bodigrim, sjakobi, chessai
bytestring-arbitrary52.0Arbitrary instances for ByteStrings (bsd3, data, library)2019-06-04tsuraan
bytestring-builder4660.0The new bytestring builder, packaged outside of GHC (bsd3, data, library)2018-09-25LeonSmith, ryanglscott
bytestring-builder-varword70.0Variable-length integer encoding (data, lgpl, library)2018-05-03ch3pjw
bytestring-class (deprecated)30.0Classes for automatic conversion to and from strict and lazy bytestrings. (deprecated) (bsd3, data, deprecated, library)2014-03-21MichaelSnoyman
bytestring-conversion3601.25Type-classes to convert values to and from ByteString. (data, library, mpl)2015-07-07ToralfWittner
bytestring-csv90.0Parse CSV formatted data efficiently (bsd3, data, library)2008-07-21DonaldStewart
bytestring-delta40.0Simple, fast binary diff/patch (data, library, mit)2012-02-22JoeyAdams
bytestring-encoding180.0ByteString ↔ Text converter based on GHC.IO.Encoding (bsd3, data, library, text)2018-09-02MasahiroSakai
bytestring-encodings40.0checks to see if a given bytestring adheres to a certain encoding (data, library, mit)2018-08-31chessai
bytestring-from (deprecated in favor of bytestring-conversion)40.0A type-class to convert values from ByteString. (data, deprecated, library)2014-05-23ToralfWittner
bytestring-lexing1160.0Parse and produce literals efficiently from strict or lazy bytestrings. (bsd2, bsd3, data, library)2015-06-07DonaldStewart, WrenThornton
bytestring-plain30.0Plain byte strings ('ForeignPtr'-less 'ByteString's) (bsd3, data, library)2015-09-07HerbertValerioRiedel
bytestring-read40.0fast ByteString to number converting library (data, library, mit)2015-06-15HirotomoMoriwaki
bytestring-substring20.0break bytestrings up into substrings (bsd3, data, library, parsing)2019-04-25chessai
bytestring-time (deprecated in favor of text-time)40.0Library for Time parsing from ByteString (bsd3, data, deprecated, library)2016-12-13klangner
bytestring-trie412.5An efficient finite map from (byte)strings to values. (bsd3, data, data-structures, library)2019-02-26WrenThornton, WrenRomano
bytestring-typenats40.0Bytestrings with typenat lengths (bsd3, data, library)2017-01-26tsuraan
ca-province-codes30.0ISO 3166-2:CA Province Codes and Names (bsd3, data, library)2019-01-28lysergia
cache202.0An in-memory key/value store with expiration support (bsd3, cache, data, library)2019-12-09hverr
cached-traversable40.0Transparent, persistent caching of lazy, traversable structures (bsd3, data, library)2014-10-07ThomasTuegel
caching (deprecated)30.0Cache combinators. (bsd3, data, deprecated, library)2020-09-05davean
caching-vault160.0A vault-style cache implementation (bsd3, data, library)2021-01-03AlexanderThiemann
caerbannog100.0That rabbit's got a vicious streak a mile wide! (bsd3, data, library, parsing)2020-08-05fozworth
call-stack5510.0Use GHC call-stacks in a backward compatible way (data, library, mit)2021-01-19SimonHengel
cantor-pairing20.0Convert data to and from a natural number representation (data, library, mit)2020-02-12identicalsnowflake
capnp310.0Cap'n Proto for Haskell (capnproto, data, library, mit, network, program, rpc, serialization)2020-12-30isd
capped-list (deprecated in favor of enumerator)40.0A list-like type for lazy sequences, with a user-defined termination value. (bsd3, data, deprecated, library)2010-01-09JohnMillikin
carray290.0A C-compatible array library. (bsd3, data, library)2017-07-18HenningThielemann, JedBrown
case-insensitive5960.0Case insensitive string comparison (bsd3, data, library, text)2019-05-05BasVanDijk, SimonHengel
cassava-conduit250.0Conduit interface for cassava package (bsd3, data, library)2020-07-21domdere
cassava-generic20.0Cassave instances for functor-like datatypes like `Either String a`. (bsd3, data, library)2020-07-30MichalGajda
cassava-streams80.0io-streams interface for the cassava CSV library. (bsd3, csv, data, io-streams, library, text)2020-10-29PeterJones
castagnoli20.0Portable CRC-32C (bsd3, data, library)2019-11-05andrewthad
categorical-algebra50.0Categorical Monoids and Semirings (bsd3, data, library)2012-03-26JonathanFischoff
ccast (deprecated)30.0typesafe c-style casts; useful for FFI (bsd3, data, deprecated, library)2018-05-29chessai
cereal7052.0A binary serialization library (bsd3, data, library, parsing)2019-05-31EricMertens, ThomasDuBuisson, TrevorElliott
cereal-derive50.0Automatic deriving of Serialize using GHC.Generics (data, gpl, library)2011-11-06JaredHance
cereal-ieee754 (deprecated in favor of cereal)30.0Floating point support for the 'cereal' serialization library (bsd3, data, deprecated, library, parsing)2011-08-31JacobStanley
cereal-io-streams40.0io-streams support for the cereal binary serialization library (bsd3, data, io-streams, library, parsing)2016-07-08MichaelXavier
cereal-streams (deprecated in favor of wire-streams)40.0Use cereal to encode/decode io-streams. (bsd3, data, deprecated, io-streams, library, parsing)2016-07-09winterland
cereal-text330.0Data.Text instances for the cereal serialization library (apache, data, library)2016-06-01ulikoehler
cereal-time40.0Serialize instances for types from `time` package. (bsd3, data, library)2017-11-06zohl
cereal-vector1040.0Serialize instances for Data.Vector types. (bsd3, data, library)2014-02-16AdamFoltzer
certificate (deprecated in favor of x509)130.0Certificates and Key Reader/Writer (bsd3, data, deprecated, library)2013-10-07VincentHanquez
chain-codes30.0Library decoding chain codes from images (data, gpl, library)2014-03-16MateuszKowalczyk
chainweb-mining-client40.0Mining Client for Kadena Chainweb (bsd3, data, mathematics, program)2020-08-21larsk
charset4110.0Fast unicode character sets based on complemented PATRICIA tries (bsd3, data, library)2015-04-01EdwardKmett, phadej, ryanglscott
chaselev-deque1640.0Chase & Lev work-stealing lock-free double-ended queues (deques). (bsd3, concurrent, data, library)2015-03-08BrandonSimmons, RyanNewton, peter_fogg
chatty-utils210.0Some utilities every serious chatty-based application may need. (agpl, data, library)2021-01-04implementation
checked30.0Bounds-checking integer types. (bsd3, data, library)2010-09-18AntoineLatter
chimera900.0Lazy infinite streams with O(1) indexing (bsd3, data, library)2020-03-25Bodigrim
choice70.0A solution to boolean blindness. (data, library, public-domain)2017-08-16MathieuBoespflug
chronos710.0A performant time library (bsd3, data, development, library, parsing, time)2020-04-17andrewthad, chessai
chunked-data1430.0Typeclasses for dealing with various chunked data representations (data, library, mit)2018-01-15MichaelSnoyman
church-maybe30.0Church encoded Maybe (bsd3, data, library)2018-08-01qfpl
church-pair30.0Church encoded pair (bsd3, data, library)2017-07-07mat8913
churros80.0Channel/Arrow based streaming computation library. (control, data, library, mit)2020-10-19LyndonMaydwell
cimple40.0Simple C-like programming language (data, gpl, library, program)2020-04-10iphydf
ciphersaber270.0Implementation of CipherSaber2 RC4 cryptography. (data, library, mit, program)2015-12-16BartonMassey
classify40.0Library for classification of media files. (data, library, public-domain)2013-11-06DavidHimmelstrup
classyplate120.0Fuseable type-class based generics (bsd3, data, library)2018-11-14lazac
clean-unions (deprecated in favor of extensible)30.0Open unions without need for Typeable (bsd3, data, deprecated, library)2014-10-13FumiakiKinoshita
clist (deprecated in favor of Fin)50.0Counted list (data, deprecated, library)2020-02-11
closed32.0Integers bounded by a closed interval (data, library, mit)2019-01-03cdparks
cmf30.0(C)oncurrent (M)onoidal (F)olds (data, library, mit)2019-11-23chessai
cmph40.0low level interface to CMPH (bsd3, data, data-structures, library)2016-04-30MarkWotton
code-builder40.0Simple system for generating code. (bsd3, data, library)2014-05-26AdamBergmark, ErikHesselink
codec92.0Simple bidirectional serialization (bsd3, data, library)2017-04-21PatrickChilton
codec-libevent (deprecated)50.0Cross-platform structure serialisation (bsd3, data, deprecated, library, parsing, program)2008-01-27AdamLangley
coerce-util (deprecated in favor of coercible-utils)50.0utils for Data.Coerce (data, deprecated, library, mit)2018-04-20chessai
coercible-subtypes30.0Coercible but only in one direction (bsd3, data, library)2020-04-08viercc
coercion-extras20.0Extra utilities for manipulating nominal and representational coercions (bsd3, data, library)2019-08-05mniip
cofunctor (deprecated in favor of contravariant)30.0DEPRECATED: use the "contravariant" package (bsd3, data, deprecated, library)2011-09-20BrandonSimmons
collection-json100.0Collection+JSON—Hypermedia Type Tools (data, library, mit)2019-02-22alunduil
colors50.0A type for colors (bsd3, data, library)2015-02-23FumiakiKinoshita
colour6492.0A model for human colour/color perception (data, graphics, library, mit)2019-05-05RussellOConnor
colour-accelerate130.0Working with colours in Accelerate (accelerate, bsd3, data, graphics, library)2020-08-28TrevorMcDonell
colour-space70.0Instances of the manifold-classes for colour types (data, gpl, graphics, library, maths)2019-10-15leftaroundabout
combobuffer50.0Various buffer implementations (bsd3, data, library)2014-05-19JohnLato
comfort-graph130.0Graph structure with type parameters for nodes and edges (bsd3, data, library)2018-08-31HenningThielemann
comic40.0A format for describing comics. (bsd3, data, library)2019-04-30davean
commutative70.0Commutative binary operations. (bsd3, data, library)2018-11-20athanclark
compact402.0Non-GC'd, contiguous storage for immutable data structures (bsd3, data, library)2020-04-13BenGamari, EdwardYang
compact-list30.0An append only list in a compact region (bsd3, data, library)2018-09-06harendra
compact-map50.0Compact Data.Map implementation using Data.Binary (bsd3, data, library)2008-11-09DavidHimmelstrup
compact-mutable-vector20.0Mutable vector with different GC characteristics (bsd3, data, library)2019-02-26rightfold
compact-sequences22.0Stacks, queues, and deques with compact representations. (bsd3, data, library)2020-09-01dfeuer
compact-string (deprecated in favor of text)70.0Fast, packed and strict strings with Unicode support, based on bytestrings. (bsd3, data, deprecated, library)2008-11-27TwanVanLaarhoven
compact-string-fix50.0Same as compact-string except with a small fix so it builds on ghc-6.12 (bsd3, data, library)2011-08-19TonyHannan
compact-word-vectors30.0Small vectors of small integers stored very compactly. (bsd3, data, library)2019-11-24BalazsKomuves
compactmap40.0A read-only memory-efficient key-value store. (bsd3, data, library)2017-07-28SimonMarechal
compose-ltr82.0More intuitive, left-to-right function composition. (data, library, mit)2017-11-21Wizek
composition370.0Combinators for unorthodox function composition (bsd3, data, library)2015-12-31DanBurton
composition-extra130.0Combinators for unorthodox structure composition (bsd3, data, library)2015-09-17athanclark
composition-prelude852.0Higher-order function combinators (bsd3, control, data, library)2020-11-10vmchale
composition-tree50.0Composition trees for arbitrary monoids. (bsd3, data, library)2018-05-07LiamOConnorDavis
compositional-data (deprecated)21.25Compositional Data Types (bsd3, data, deprecated, library)2018-12-27
compound-types122.0Sum and Product types and such (data, library, mit, type-system, types)2020-04-27NikitaVolkov
compressed32.0Compressed containers and reducers (bsd3, compression, data, library, mapreduce)2018-01-08EdwardKmett
comptrans70.0Automatically converting ASTs into compositional data types (bsd3, data, generics, library)2015-04-01JamesKoppel
concise1270.0Utilities for Control.Lens.Cons (bsd3, data, lenses, library)2018-02-04frasertweedale
concrete-haskell150.0Library for the Concrete data format. (data, library, program)2017-12-10TomLippincott
concrete-haskell-autogen90.0Automatically generated Thrift definitions for the Concrete data format. (data, library)2017-09-03TomLippincott
concrete-typerep40.0Binary and Hashable instances for TypeRep (bsd3, data, library)2013-01-08ReinerPope
concurrent-batch30.0Concurrent batching queue based on STM with timeout. (bsd3, data, library)2018-07-28HarpoRoeder
concurrent-buffer60.0Concurrent expanding buffer (data, library, mit)2017-10-26NikitaVolkov
concurrent-resource-map100.0Concurrent resource map (bsd3, data, library)2020-03-18MateuszKowalczyk
condorcet50.0Library for Condorcet voting (bsd3, data, library)2008-02-26GwernBranwen
conduit17492.25Streaming data processing library. (conduit, data, library, mit)2020-11-25MichaelSnoyman
conduit-combinators1920.0DEPRECATED Functionality merged into the conduit package itself (conduit, data, library, mit)2018-02-01MichaelSloan, MichaelSnoyman
conduit-concurrent-map42.0Concurrent, order-preserving mapping Conduit (conduit, data, library, mit)2018-08-31NiklasHambuechen
conduit-extra7080.0Batteries included conduit: adapters for common libraries. (conduit, data, library, mit)2020-03-19MichaelSnoyman
conduit-resumablesink40.0Allows conduit to resume sinks to feed multiple sources into it. (bsd3, conduit, data, library)2017-11-01AndrewMiller
conduit-throttle130.0Throttle Conduit Producers (bsd3, data, library)2017-12-21mtesseract
conduit-tokenize-attoparsec (deprecated)30.0Conduits for tokenizing streams. (bsd3, conduit, data, deprecated, library, program)2016-01-31newhoggy, haskellworks
conffmt40.0A .conf file formatter (data, mit, program)2016-08-31yamadapc
confide50.0derive typeclass instances for decoding types from HOCON conf (bsd3, data, library)2018-03-08amilkov
config-manager40.0Configuration management (configuration, data, gpl, library)2016-08-13guyonvarch
configifier100.0parser for config files, shell variables, command line args. (agpl, configuration, data, library)2016-07-05MatthiasFischmann
configuration30.0Simple data type for application configuration. (bsd3, data, library)2012-12-07HiromiIshii
configurator1362.0Configuration management (bsd3, configuration, data, library)2014-07-02BryanOSullivan
configurator-export30.0Pretty printer and exporter for configurations from the "configurator" library. (bsd3, configuration, data, library)2016-05-08jle
configurator-ng140.0The next generation of configuration management (bsd3, configuration, data, library)2016-10-31LeonSmith
configurator-pg930.0Reduced parser for configurator-ng config files (bsd3, configuration, data, library)2020-10-26vollmert
congruence-relation30.0Decidable congruence relations for Haskell: up to you whether this is a joke (data, library, mit)2014-12-05JonSterling
connection-pool160.0Connection pool built on top of resource-pool and streaming-commons. (bsd3, data, library, network)2018-03-03PeterTrsko
constaparser40.0Parse ByteStrings of a prescribed length. (bsd3, data, library)2018-06-22chessai
constrained40.0Generalization of standard Functor, Foldable, and Traversable classes (bsd2, data, library)2019-10-27SergeyVinokurov
constrained-dynamic120.0Dynamic typing with retained constraints (data, library, mit)2016-08-03jh3141
constrained-platform-instances20.0Instances of standard platform types for 'constrained' package. (bsd2, data, library)2019-10-27SergeyVinokurov
constraint-tuples70.0Partially applicable constraint tuples (bsd3, data, library)2019-11-24ryanglscott
construct90.0Haskell version of the Construct library for easy specification of file formats (bsd3, data, library, parsing, serialization)2020-07-18MarioBlazevic
container70.0Containers abstraction and utilities. (apache, data, library)2018-12-18danilo2, iamrecursion
containers-accelerate60.0Hashing-based container types (accelerate, bsd3, data, library)2020-08-28TrevorMcDonell
containers-deepseq (deprecated in favor of containers)40.0Provide orphan NFData instances for containers as needed. (deprecated) (bsd3, data, deprecated, library)2012-01-19MichaelSnoyman
containers-verified70.0Formally verified drop-in replacement of containers (data, library, mit)2018-06-18JoachimBreitner
context40.0Thread-indexed, nested contexts (data, library, mit)2020-10-24jship
context-resource30.0Thread-safe, pool-compatible resource provider (data, library, mit)2020-07-28jship
context-stack30.0An abstraction of a stack and stack-based monadic context. (data, library, mit)2014-08-29thinkpad20
contiguous520.0Unified interface for primitive arrays (array, bsd3, data, library, primitive)2020-06-30andrewthad, chessai
contiguous-checked20.0contiguous with bounds checks (bsd3, data, library)2019-01-02andrewthad
contiguous-fft40.0dft of contiguous memory structures (bsd3, data, library)2019-02-16chessai
contravariant8722.5Contravariant functors (bsd3, control, data, library)2020-12-30EdwardKmett, EricMertens, ryanglscott
control-monad-attempt (deprecated)40.0Monad transformer for attempt. (deprecated) (bsd3, data, deprecated, failure, library)2012-01-19MichaelSnoyman, NicolasPouillard
conversion180.0Universal converter between values of different types (control, conversion, data, library, mit)2016-04-12NikitaVolkov
conversion-bytestring160.0"Conversion" instances for the "bytestring" library (control, conversion, data, library, mit)2016-04-12NikitaVolkov
conversion-case-insensitive40.0"Conversion" instances for the "case-insensitive" library (control, conversion, data, library, mit)2015-04-23NikitaVolkov
conversion-text150.0"Conversion" instances for the "text" library (control, conversion, data, library, mit)2016-04-12NikitaVolkov
convert70.0Safe and unsafe data conversion utilities with strong type-level operation. checking. (apache, data, library)2018-12-18danilo2, iamrecursion
convertible1032.0Typeclasses and instances for converting between types (bsd3, data, library)2015-04-20ErikHesselink, JohnGoerzen, NicolasWu, rsoeldner
convertible-ascii30.0convertible instances for ascii (data, failure, library, public-domain)2011-12-19MasatakeDaimon
convertible-text (deprecated)50.0Typeclasses and instances for converting between types (deprecated) (bsd3, data, deprecated, failure)2012-01-19MichaelSnoyman
coroutine-iteratee (deprecated)50.0Bridge between the monad-coroutine and iteratee packages. (concurrency, data, deprecated, library)2011-12-31MarioBlazevic
count50.0Bijective mappings between values and possibly infinite prefixes of [0..] (bsd3, data, library)2014-06-10Maxdamantus
countable130.0Countable, Searchable, Finite, Empty classes (bsd3, data, library)2016-06-22AshleyYakeley
counter62.0An object frequency counter. (data, library, mit)2017-09-04wei2912
country-codes110.0ISO 3166 country codes and i18n names. (bsd3, data, library)2019-02-12FelipeLessa, JeanPhilippeMoresmau
coya20.0Coya monoids (bsd3, data, library, math)2020-07-09chessai
cpio-conduit120.0Conduit-based CPIO (apache, data, library)2015-08-04DanAloni
cpu642.0Cpu information and properties helpers. (bsd3, data, library)2013-11-12VincentHanquez
cqrs30.0Command-Query Responsibility Segregation (data, library, mit)2015-09-17BardurArantsson
cqrs-core30.0Command-Query Responsibility Segregation (data, library, mit)2015-09-16BardurArantsson
cqrs-memory40.0Memory backend for the cqrs package. (data, library, mit)2015-09-16BardurArantsson
cqrs-postgresql50.0PostgreSQL backend for the cqrs package. (data, library, mit)2015-09-16BardurArantsson
cqrs-sqlite330.0SQLite3 backend for the cqrs package. (data, library, mit)2013-03-10BardurArantsson
cqrs-test40.0Command-Query Responsibility Segregation Test Support (data, library, mit)2013-03-10BardurArantsson
cqrs-testkit40.0Command-Query Responsibility Segregation Test Support (data, library, mit)2015-09-16BardurArantsson
cqrs-types40.0Command-Query Responsibility Segregation. Modules for the basic types. (data, library, mit)2015-09-17BardurArantsson
critbit1690.0Crit-bit maps and sets (bsd3, data, library)2014-07-04BryanOSullivan
crjdt-haskell50.0A Conflict-Free Replicated JSON Datatype for Haskell (bsd3, data, library)2017-05-28amarpotghan
crypt-sha51270.0Pure Haskell implelementation for GNU SHA512 crypt algorithm (bsd3, data, library)2017-07-02phadej
crypto-api3492.0A generic interface for cryptographic operations (bsd3, cryptography, data, library)2018-01-05ThomasDuBuisson
crypto-api-tests690.0A test framework and KATs for cryptographic operations. (bsd3, cryptography, data, library)2014-01-08ThomasDuBuisson
cryptohash2801.25collection of crypto hashes, fast, pure and practical (bsd3, cryptography, data, library)2016-03-25VincentHanquez
cryptohash-md53620.0Fast, pure and practical MD5 implementation (bsd3, cryptography, data, library)2016-06-28HerbertValerioRiedel
cryptohash-sha13750.0Fast, pure and practical SHA-1 implementation (bsd3, cryptography, data, library)2016-06-28HerbertValerioRiedel
cryptohash-sha2564142.25Fast, pure and practical SHA-256 implementation (bsd3, cryptography, data, library)2017-11-13AustinSeipp, HerbertValerioRiedel
cryptohash-sha512340.0Fast, pure and practical SHA-512 implementation (bsd3, cryptography, data, library)2016-10-23HerbertValerioRiedel
css-syntax70.0High-performance CSS tokenizer and serializer. (data, library, mit)2018-09-19wereHamster
csv-conduit380.0A flexible, fast, conduit-based CSV parser library for Haskell. (bsd3, conduit, csv, data, library, text)2020-11-12MichaelXavier, OzgunAtaman
csv-enumerator50.0A flexible, fast, enumerator-based CSV parser library for Haskell. (bsd3, data, library)2013-01-21OzgunAtaman
csv-table50.0Scripts for manipulating tables stored as CSV files (data, library, mit)2016-04-21ranjitjhala
cuckoo80.0Haskell Implementation of Cuckoo Filters (bsd3, data, library)2020-08-07larsk
cuckoo-filter60.0Pure and impure Cuckoo Filter (data, library, mit, program)2018-12-12ChrisCoffey
cudd110.0Bindings to the CUDD binary decision diagrams library (bsd3, data, library)2017-01-09adamwalker
currencies90.0Currencies representation, pretty printing and conversion (bsd3, data, library)2018-06-22alx741, DanielCampoverde
currency50.0Types representing standard and non-standard currencies (data, library)2013-09-07StephenWeber
currency-codes200.0ISO-4217 Currency Codes (data, library, mit)2018-03-19KtorZ
currency-convert42.0Typesafe currency conversion (bsd3, data, library)2016-08-16pigworts2
curry30.0Curry types (bsd3, data, library)2018-01-25
cve50.0simple and efficient cve datatype (bsd3, data, library)2018-03-21chessai
czipwith1690.0CZipWith class and deriving via TH (bsd3, data, library)2020-06-10lspitzner, fozworth, dukerutledge
d10202.0Digits 0-9 (data, library, mit)2020-06-03chris_martin, Monoid_Mary
data-accessor1700.0Utilities for accessing and manipulating fields of records (bsd3, data, library)2019-05-23HenningThielemann, LukePalmer
data-accessor-monadLib40.0Accessor functions for monadLib's monads (data, library, monads)2009-02-11RussellOConnor
data-accessor-monads-fd80.0Use Accessor to access state in monads-fd State monad class (bsd3, data, library)2011-02-26HenningThielemann
data-accessor-monads-tf40.0Use Accessor to access state in monads-tf State monad type family (bsd3, data, library)2012-04-10HenningThielemann
data-accessor-mtl30.0Use Accessor to access state in mtl State monad class (bsd3, data, library)2014-07-01HenningThielemann
data-accessor-template860.0Utilities for accessing and manipulating fields of records (bsd3, data, library)2018-08-31HenningThielemann, LukePalmer
data-accessor-transformers1070.0Use Accessor to access state in transformers State monad (bsd3, data, library)2016-01-18HenningThielemann
data-as40.0Simple extensible sum (data, library, mit)2020-11-26incertia
data-ascii (deprecated in favor of ascii)70.0Type-safe, bytestring-based ASCII values (bsd3, data, deprecated, library)2020-05-20chris_martin, Monoid_Mary
data-binary-ieee754 (deprecated in favor of binary, cereal)3160.0Parser/Serialiser for IEEE-754 floating-point values (data, deprecated, library, mit)2013-07-07JohnMillikin
data-bword1350.0Extra operations on binary words of fixed length (bsd3, data, library)2016-07-06MikhailVorozhtsov
data-carousel40.0A rotating sequence data structure (data, library, mit)2014-11-12JonSterling
data-cell40.0Generic cellular data representation library (bsd3, data, library)2015-07-07patrykz
data-check (deprecated)50.0Library for checking and normalization of data (e.g. from web forms) (bsd3, data, deprecated, library, web)2017-05-21mrkkrp
data-checked1180.0Type-indexed runtime-checked properties (bsd3, data, library)2014-02-09MikhailVorozhtsov
data-combinator-gen20.0Generate a special combinator from any data type. (data, library, mit)2019-05-26bolt12
data-compat20.0Define Backwards Compatibility Schemes for Arbitrary Data (data, library, mit)2020-05-28TravisWhitaker
data-constructors40.0Generically compare data by their constructors (bsd3, data, library)2017-09-16dailectic
data-cycle30.0a cyclic doubly linked list (bsd3, data, library)2012-03-10TobiasBrandt
data-default4992.25A class for types with a default value (bsd3, data, library)2016-06-25LukasMai
data-default-class5080.0A class for types with a default value (bsd3, data, library)2016-06-25LukasMai
data-default-extra40.0A class for types with a default value. (bsd3, data, library)2017-01-05PeterTrsko
data-default-generics50.0A class for types with a default value (bsd3, data, library)2014-02-20jcristovao
data-default-instances-base880.0Default instances for types in base (bsd3, data, library)2016-06-25LukasMai
data-default-instances-bytestring40.0Default instances for (lazy and strict) ByteString, Builder and ShortByteString. (bsd3, data, library)2016-02-07PeterTrsko
data-default-instances-case-insensitive40.0Default instance for CI type from case-insensitive package. (bsd3, data, library)2016-02-07PeterTrsko
data-default-instances-containers5000.0Default instances for types in containers (bsd3, data, library)2013-04-02LukasMai
data-default-instances-dlist4320.0Default instances for types in dlist (bsd3, data, library)2013-04-02LukasMai
data-default-instances-new-base50.0Default instances for types in newer versions of base package. (bsd3, data, library)2017-01-05PeterTrsko
data-default-instances-old-locale5780.0Default instances for types in old-locale (bsd3, data, library)2013-04-03LukasMai
data-default-instances-text30.0Default instances for (lazy and strict) Text and Text Builder. (bsd3, data, library)2016-02-07PeterTrsko
data-default-instances-unordered-containers30.0Default instances for unordered-containers. (bsd3, data, library)2016-02-07PeterTrsko
data-default-instances-vector60.0Default instances for types defined in vector package (bsd3, data, library)2016-02-07PeterTrsko
data-dispersal90.0Space-efficient and privacy-preserving data dispersal algorithms. (cryptography, data, lgpl, library)2014-10-05PeterRobinson
data-diverse980.0Extensible records and polymorphic variants. (bsd3, data, library, records)2019-11-26louispan
data-diverse-lens150.0Isos & Lens for Data.Diverse.Many and Prisms for Data.Diverse.Which (bsd3, data, library, records)2018-06-30louispan
data-dword2980.0Stick two binary words together to get a bigger one (bsd3, data, library)2020-04-11MikhailVorozhtsov
data-easy60.0Consistent set of utility functions for Maybe, Either, List and Monoids. (bsd3, data, library)2016-07-26jcristovao
data-elf50.0Executable and Linkable Format (ELF) data structures. (bsd3, data, library)2016-07-23MikhailVorozhtsov
data-embed50.0Embed files and other binary blobs inside executables without Template Haskell. (data, library, mit, program)2016-01-01AntonEkblad
data-endian1570.0Endian-sensitive data (bsd3, data, library)2016-07-07MikhailVorozhtsov
data-extend-generic30.0Extend Haskell data or newtype like in OOP languages (bsd3, data, library)2015-12-16YLiLarry
data-filepath40.0A type safe file path data structure (bsd3, data, library)2015-02-12MaxwellSwadling, domdere
data-filter40.0Utilities for filtering (bsd2, data, library)2018-05-17boonami
data-fin70.0Finite totally ordered sets (bsd3, data, library)2014-08-16WrenThornton
data-fin-simple30.0Simple integral finite set (bsd3, data, library)2015-06-17seagull
data-fix5132.25Fixpoint data types (bsd3, data, library)2020-07-22AntonKholomiov, gelisam, phadej
data-fix-cse210.0Common subexpression elimination for the fixploint types. (bsd3, data, library)2020-08-02AntonKholomiov
data-flags150.0A package for working with bit masks and flags in general. (bsd3, data, library)2017-07-29MikhailVorozhtsov
data-flagset30.0An efficient data type for sets of flags (data, library, mit)2015-07-12TobiasBrandt
data-foldapp60.0Fold function applications. Framework for variadic functions. (bsd3, data, library)2018-01-21erisco
data-function-meld30.0Map the arguments and return value of functions. (bsd3, data, library)2016-05-25erisco
data-function-tacit30.0Write functions in tacit (pointless) style using Applicative and De Bruijn index notation. (bsd3, data, library)2016-06-01erisco
data-has992.0Simple extensible product (bsd3, data, library)2020-12-01winterland
data-hash2420.0Combinators for building fast hashing functions. (bsd3, data, library)2015-05-20DanielGorin
data-index30.0Extending the concept of indices for lists and other containers (bsd3, data, library)2018-05-11IlyaPershin
data-interval230.0Interval datatype, interval arithmetic and interval-based containers (bsd3, data, library, math)2019-10-22MasahiroSakai, Bodigrim
data-inttrie760.0A simple lazy, infinite trie from integers (bsd3, data, library)2018-03-31LukePalmer, ThomasDuBuisson
data-ivar50.0Write-once variables with concurrency support (bsd3, concurrency, data, library)2008-10-20GregoryCrosswhite, LukePalmer
data-json-token (deprecated)60.0Json Token datatype (bsd3, data, deprecated, json, library, program)2016-02-02newhoggy, haskellworks
data-kiln40.0Sculpt mutable recursive data with reference equality; bake it using a data kiln into an immutable lazy structure (bsd3, data, library)2014-12-17kwf
data-layout30.0Read/write arbitrary binary layouts to a "Data.Vector.Storable". (bsd3, data, library)2013-10-06JacobStanley
data-lens-light690.0Simple lenses, minimum dependencies (data, lenses, library, mit)2016-05-26RomanCheplyaka
data-lens-template80.0Utilities for Data.Lens (bsd3, data, library)2016-07-17EdwardKmett, JoelBurget, RussellOConnor
data-list-sequences50.0Utilities for working with sequences within lists. (data, gpl, library)2011-08-13JonasKramer
data-list-zigzag70.0A list but with a balanced enumeration of Cartesian product. (bsd3, data, library)2018-02-27erisco
data-map-multikey30.0Data.Map with multiple, unique keys (data, library, mit)2015-05-13JasonHickner
data-memocombinators242.0Combinators for building memo tables. (bsd3, data, library)2013-12-14DmitryMalikov, LukePalmer, ThomasDuBuisson
data-msgpack (deprecated in favor of msgpack-binary)192.0A Haskell implementation of MessagePack (bsd3, data, deprecated, library, program)2020-02-29iphydf
data-msgpack-types (deprecated in favor of msgpack-types)160.0A Haskell implementation of MessagePack. (bsd3, data, deprecated, library)2020-02-29iphydf
data-nat40.0data Nat = Zero | Succ Nat (bsd3, data, library, math)2012-09-23GaborLehel
data-object (deprecated in favor of aeson)40.0Represent hierachichal structures, called objects in JSON. (deprecated) (bsd3, data, deprecated, library)2012-01-18MichaelSnoyman
data-or80.0A data type for non-exclusive disjunction. (bsd3, data, library)2015-05-30WrenThornton
data-ordlist1162.25Set and bag operations on ordered lists (bsd3, data, library, list)2014-11-20LeonSmith
data-partition40.0A pure disjoint set (union find) data structure (bsd3, data, library)2015-04-03LukePalmer
data-quotientref30.0Reference cells that need two independent indices to be accessed. (bsd3, data, library)2008-10-20LukePalmer
data-ref630.0Unify STRef and IORef in plain Haskell 98 (bsd3, data, library)2019-01-22HenningThielemann
data-reify550.0Reify a recursive data structure into an explicit graph. (bsd3, data, language, library, parsing, reflection)2020-10-12AndyGill, ryanglscott
data-reify-cse30.0Common Sub-Expression Elimination for graphs generated by Data.Reify. (bsd3, data, language, library)2013-05-08SebastiaanVisser
data-rev30.0A typeclass for reversing order of contents. (bsd3, data, library)2015-01-01jxv
data-rope40.0Ropes, an alternative to (Byte)Strings. (data, library)2011-02-11PierreEtienneMeunier
data-serializer1370.0Common API for serialization libraries (bsd3, data, library)2019-11-01MikhailVorozhtsov
data-spacepart (deprecated in favor of spacepart)50.0Deprecated. Now called "spacepart". Space partitioning data structures. (bsd3, data, deprecated, library)2009-02-16CoreyOConnor
data-standards90.0A collection of standards representable by simple data types. (data, library, mpl)2018-07-24ageitilt
data-store50.0Type safe, in-memory dictionary with multidimensional keys. (bsd3, data, library)2013-08-19PetrPilar
data-sword110.0Shorter binary words (bsd3, data, library)2017-07-29MikhailVorozhtsov
data-tensor40.0Tensor and Group typeclasses (data, library, mit)2015-06-19TobiasDammers
data-textual1420.0Human-friendly textual representations. (bsd3, data, library, text)2019-11-01MikhailVorozhtsov
data-timeout40.064-bit timeouts of nanosecond precision (bsd3, concurrency, data, library)2018-10-22MikhailVorozhtsov
data-transform130.0Functions to transform data structures. (bsd3, data, library)2020-04-10JonasScholl
data-treify50.0Reify a recursive data structure into an explicit graph. (bsd3, data, language, library, parsing, reflection)2014-03-18ConalElliott
data-type40.0Basic type wrangling types and classes (bsd3, data, library, type-system)2011-09-23IainAlexander
data-util50.0utilities for handle data (bsd3, data, development, library, utils)2015-09-08KatsutoshiItoh
data-validation232.0A library for creating type safe validations. (apache, data, library, validation)2020-12-17bcj, sambolias, DevinLyons
data-variant40.0A variant data type, useful for modeling dynamically-typed programming languages (bsd3, data, library)2014-07-31TobiasDammers
data-vector-growable200.0Dynamic growable resizable mutable generic vector (bsd3, data, data-structures, library)2020-12-24FumiakiKinoshita
datasets342.0Classical data sets for statistics and machine learning (data, data-mining, library, machine-learning, mit, statistics)2019-02-12glutamate, ocramz, stites
date-conversions60.0Date conversions (data, date, library, mit)2018-02-07joshuaclayton
dates50.0Small library for parsing different dates formats. (bsd3, data, library)2019-06-26IlyaPortnov
datetime130.0Utilities to make Data.Time.* easier to use (data, library)2015-07-20EricSessoms, EugenyDzhurinsky, jsl, stackbuilders
datetime-sb40.0Utilities to make Data.Time.* easier to use. (data, library)2015-05-28jsl
dawg160.0Directed acyclic word graphs (bsd3, data, data-structures, library)2013-07-22JakubWaszczuk
dawg-ord82.0Directed acyclic word graphs (bsd3, data, data-structures, library)2020-09-24JakubWaszczuk
ddate30.0Discordian Date Types for Haskell (data, gpl, library)2016-06-30hellerve
dec2370.0Decidable propositions. (bsd3, data, dependent-types, library)2019-06-19phadej
deiko-config50.0Small and typesafe configuration library. (bsd3, data, library)2017-11-09YorickLaupa
delimited-text40.0Parse character delimited textual data (bsd3, data, library)2011-03-23DonaldStewart, StefanKersten
delta40.0A library for detecting file changes (data, lgpl, library, program)2015-07-23muzzle
dense110.0Mutable and immutable dense multidimensional arrays (bsd3, data, library)2020-11-20cchalmers
dense-int-set30.0Dense int-set (data, library, mit)2018-10-08NikitaVolkov
dependent-hashmap30.0Dependent hash maps (bsd3, data, library)2020-03-02OlleFredriksson
dependent-map2302.5Dependent finite maps (partial dependent products) (data, dependent-types, library)2020-03-27BertramFelgenhauer, JamesCook, RyanTrinkle, abrar, 3noch
dependent-monoidal-map70.0Dependent map that uses semigroup mappend (bsd3, data, library)2019-11-26CaleGibbard, RyanTrinkle, abrar
dependent-state80.0Control structure similar to Control.Monad.State, allowing multiple nested states, distinguishable by provided phantom types. (apache, data, library)2016-01-30danilo2, iamrecursion
dependent-sum2852.25Dependent sum type (data, dependent-types, library, public-domain)2020-03-25BertramFelgenhauer, JamesCook, RyanTrinkle, abrar, 3noch, DanBornside
depq30.0Double-ended priority queues (bsd3, data, data-mining, data-structures, library)2020-05-31ocramz
derive-IG40.0Macro to derive instances for Instant-Generics using Template Haskell (bsd3, data, generics, library)2010-09-06HiromiIshii
derive-enumerable50.0Generic instances for enumerating complex data types (data, generics, gpl, library)2015-05-27mgoszcz2
derive-lifted-instances310.0Derive class instances though various kinds of lifting (apache, data, development, generics, library)2020-10-03SjoerdVisscher
derive-trie70.0Automatic derivation of Trie implementations. (bsd3, data, library)2012-02-08AndreasBaldeau
deriveJsonNoPrefix30.0Derive ToJSON/FromJSON instances in a more prefix-friendly manner. (apache, data, library)2018-07-17igrep
describe120.0Combinators for describing binary data structures (bsd3, data, library)2020-02-08riuga
descrilo90.0Loads a list of items with fields (configuration, data, gpl, library, parser)2018-11-03mgmillani
detour-via-sci70.0JSON and CSV encoding for rationals as decimal point numbers. (csv, data, json, library, math, mpl, numeric)2018-06-22philderbeast
detour-via-uom40.0JSON and CSV encoding for quantities. (csv, data, json, library, math, mpl, numeric, physics)2018-06-22philderbeast
dgim50.0Implementation of DGIM algorithm (algorithms, data, library, mit)2015-04-04musically_ut
dice-entropy-conduit70.0Cryptographically secure n-sided dice via rejection sampling (cryptography, data, lgpl, library)2020-05-09PeterRobinson
dicom80.0A library for reading and writing DICOM files in the Explicit VR Little Endian transfer syntax. (data, gpl, library, medical)2015-12-11PhilFreeman, karchie
diff330.0Perform a 3-way difference of documents (bsd3, data, library)2018-04-30OliverCharles
diffmap (deprecated in favor of patience)30.0diff on maps (bsd3, data, deprecated, library)2018-06-18chessai
digit662.0A data-type representing digits 0-9 and other combinations (bsd3, data, library)2020-10-30TonyMorris, qfpl
digits310.0Converts integers to lists of digits and back. (bsd3, data, library)2016-07-08HenryBucklow
digraph120.0Directed Graphs (bsd3, data, library, mathematics)2020-05-20larsk, fosskers
direct-binary-files30.0Serialization and deserialization monads for streams and ByteStrings. (bsd3, data, library)2012-12-10IreneKnapp
direct-murmur-hash50.0An implementation of the MurmurHash3 algorithm (bsd3, data, library)2015-02-24IreneKnapp, dmbarbour
directory-tree1242.0A simple directory-like tree datatype, with useful IO functions (bsd3, data, library, system)2016-09-05BrandonSimmons
dirfiles40.0 (bsd3, data, library)2014-09-25HugoGomes
discrete40.0replacement for enum (bsd3, data, library)2018-09-17chessai
discrete-intervals70.0Discrete Intervals (bsd3, data, library)2017-12-17chessai
discrete-space-map50.0A discrete space map. (bsd3, data, library)2016-02-13SjoerdVisscher
discrimination442.5Fast generic linear-time sorting, joins and container construction. (bsd3, data, library, sorting)2021-01-08AnthonyCowley, EdwardKmett, phadej, ryanglscott, GeorgeWilson
disjoint-set50.0Persistent disjoint-sets, a.k.a union-find. (bsd3, data, library)2012-10-15MaxwellSayles
disjoint-set-stateful60.0Monadic disjoint set (data, library, mit)2017-04-23clinton
diskhash142.0Disk-based hash table (data, library, mit)2019-11-11luispedro
dlist11022.0Difference lists (bsd3, data, library)2020-07-18DonaldStewart, SeanLeather
dlist-instances1530.0Difference lists instances (bsd3, data, library)2016-07-23GregWeber, MichaelSnoyman, SeanLeather
dlist-nonempty60.0Non-empty difference lists (bsd3, data, library)2017-07-31phadej
do-list30.0Do notation for free (bsd3, data, library, list, syntax)2016-09-19TarasSerduke
dockerfile40.0A Haskell DSL for generating Dockerfiles (data, library, mit)2018-09-14ChristopherReichert
docrecords60.0Vinyl-based records with hierarchical field names, default values and documentation (cli, data, json, library, mit, options, parsing, records)2019-10-09YvesPares
doldol20.0Flag packer & handler for flaggable data (bsd3, data, library)2019-07-22yongjoon
dot60.0Datatypes and encoding for graphviz dot files (bsd3, data, graphics, graphs, library)2019-03-15andrewthad, chessai
dotnet-timespan60.0.NET TimeSpan (bsd3, data, library)2016-03-13YorickLaupa
double-metaphone40.0Haskell bindings to a C double-metaphone implementation. (data, library)2016-03-08ChristianMarie
dson40.0Haskell Doge Serialized Object Notation Parser (data, gpl, library)2019-05-27lcycon
dson-parsec60.0DSON parser. (data, library, mit)2014-06-23alvare
dstring60.0Difference strings (bsd3, data, library)2012-09-23BasVanDijk
dtab110.0Harmonix (Guitar Hero, Rock Band) DTA/DTB metadata library (bsd3, data, library, program)2020-01-27mtolly
dtd-text50.0Parse and render XML DTDs (bsd3, data, library, parsing, text, xml)2014-01-08YitzGale, M15K
dtd-types40.0Basic types for representing XML DTDs (bsd3, data, library, text, xml)2018-11-03YitzGale, M15K
dual-tree1620.0Rose trees with cached and accumulating monoidal annotations (bsd3, data, library)2019-10-20BrentYorgey, RyanYates, jeffreyrosenbluth, bergey, cchalmers
dublincore-xml-conduit80.0XML streaming parser/renderer for the Dublin Core standard elements. (data, library, public-domain)2017-11-23koral
dwarf110.0Parser for DWARF debug format. (bsd3, data, library)2010-03-21ErikCharlebois
dwarf-el30.0Parser for DWARF debug format. (bsd3, data, library)2018-03-18EyalLotem
dynamic-graphs80.0Dynamic graph algorithms (bsd3, data, library)2019-01-23AlexLang, JasperVanDerJeugt
dynamic-mvector40.0A wrapper around MVector that enables pushing, popping and extending. (bsd3, data, library)2017-03-10AndrasKovacs
dynamic-object70.0Object-oriented programming with duck typing and singleton classes. (bsd3, data, library)2013-01-15TakayukiMuranushi
dynamic-state190.0Optionally serializable dynamic state keyed by type (data, gpl, library, yi)2018-06-07DmitryIvanov, MateuszKowalczyk, fread2281, JaroReinders
edit60.0A monad for rewriting things. (bsd3, data, library)2018-09-03theindigamer
edit-distance-vector1140.0Calculate edit distances and edit scripts between vectors. (algorithms, bsd3, data, data-structures, library)2016-05-24ThomasSutton
edit-lenses60.0Symmetric, stateful edit lenses (bsd3, data, library)2012-01-27DanielWagner
edit-lenses-demo30.0Programs demoing the use of symmetric, stateful edit lenses (bsd3, data, program)2016-07-24DanielWagner
editable40.0Interactive editors for Generics (bsd2, data, library)2014-10-05MaxwellSwadling
eigen531.5Eigen C++ library (linear algebra: matrices, sparse matrices, vectors, numerical solvers). (algebra, algorithms, bsd3, data, library, math, numeric, statistics)2018-12-11OlegSidorkin, chessai
either-both (deprecated)50.0Either or both (bsd3, data, deprecated, library)2019-08-12
either-list-functions90.0Functions involving lists of Either (apache, data, library)2020-03-02chris_martin
either-result40.0‘MonadFail’ instance for a wrapper of ‘ExceptT String m a’. (apache, data, library)2020-08-16kakkun61
either-unwrap (deprecated in favor of either)50.0Functions for probing and unwrapping values inside of Either. (bsd3, data, deprecated, library)2009-11-30GregoryCrosswhite
elerea-sdl40.0Elerea FRP wrapper for SDL (data, library)2012-12-15StephenWeber
elf120.0An Elf parser (bsd3, data, library)2018-12-26ErikCharlebois, wangbj
elm-export-persistent200.0elm-export persistent entities (data, database, library, mit, web)2021-01-09WilliamCasarin
empty-monad30.0A container that always has no values. (bsd3, data, library)2017-02-02vadimvinnik
encode-string50.0Safe string conversion and encoding (data, library, mit, string, text)2017-03-15minad
encoding-io40.0Encoding-aware file I/O. (bsd3, data, library)2016-08-05terrorjack
endo100.0Endomorphism utilities. (bsd3, data, library)2016-02-28PeterTrsko
engineering-units40.0A numeric type for managing and automating engineering units. (bsd3, data, library)2015-10-03TomHawkins
entropy5960.0A platform independent entropy source (bsd3, cryptography, data, library)2020-04-11ThomasDuBuisson
enum-subset-generate30.0Generate an ADT being a subset of another ADT, and the corresponding mappings. (bsd3, data, library)2018-05-280xd34df00d
enum-types30.0small enum types (bsd3, data, library)2019-03-16andrewthad
enumerable70.0A typeclass for enumerating all values a type (bsd3, data, library)2009-08-16DanielPeebles
enumerate120.0enumerate all the values in a finite type (automatically) (data, library, mit, program)2017-05-02sboo
enumeration (deprecated in favor of cantor-pairing, finitary, smallcheck)1230.0A practical API for building recursive enumeration procedures and enumerating datatypes. (bsd3, data, deprecated, library, serialization, test, testing)2019-12-21emc2, Bodigrim
enumerator (deprecated)450.0Reliable, high-performance processing with left-fold enumerators (data, deprecated, enumerator, library, mit)2013-10-13JohnMillikin
enumfun30.0Finitely represented /total/ EnumMaps (bsd3, data, library)2012-10-09LiyangHu
enummapmap50.0Map of maps using Enum types as keys (bsd3, data, data-structures, library)2014-02-01MatthewWest
enummapset-th50.0TH-generated EnumSet/EnumMap wrappers around IntSet/IntMap. (bsd3, data, library)2020-07-22FumiakiKinoshita, LiyangHu
enumset280.0Sets of enumeration values represented by machine words (bsd3, data, foreign, library)2019-08-13HenningThielemann
envy-extensible20.0Provides FromEnv in envy instance for Record of extensible. (bsd3, data, library, record)2020-02-04igrep
equivalence2550.0Maintaining an equivalence relation implemented as union-find using STT. (algorithms, bsd3, data, library)2019-09-09PatrickBahr
error-or50.0Composable, hierarchical errors. (bsd3, data, library)2020-12-16luntain
error-or-utils40.0Utilities using ErrorOr datatype (bsd3, data, library, testing)2020-12-01luntain
ess40.0The type-level S combinator in Haskell. (data, library, mit)2015-04-25MichaelOChurch
eths-rlp40.0Ethereum Recursive Length Prefix Encoding (contracts, data, ethereum, finance, library, mit, network)2016-12-25LogvinovLeon
euler-tour-tree40.0Euler tour trees (data, library, public-domain)2018-09-04koral
event-handlers30.0Event handlers (control, data, library, public-domain)2008-12-15JamesCook
event-list320.0Event lists with relative or absolute time stamps (data, library)2018-02-16HenningThielemann
every-bit-counts60.0A functional pearl on encoding and decoding using question-and-answer strategies (bsd3, data, library)2010-09-27DonaldStewart
ex-pool70.0Another fork of resource-pool, with a MonadIO and MonadCatch constraint (bsd3, data, library)2018-01-07KimAltintop
exact-pi1010.0Exact rational multiples of pi (and integer powers of pi) (data, library, mit)2018-12-14dmcclean, Bodigrim
exinst102.0Dependent pairs and their instances. (bsd3, data, library)2020-05-10RenzoCarbonara
exinst-aeson20.0Dependent pairs and their instances. (bsd3, data, library)2020-05-10RenzoCarbonara
exinst-bytes120.0Dependent pairs and their instances. (bsd3, data, library)2020-05-10RenzoCarbonara
exinst-cereal60.0Dependent pairs and their instances. (bsd3, data, library)2020-05-10RenzoCarbonara
exinst-deepseq (deprecated in favor of exinst)40.0Derive instances for the `deepseq` library for your existential types. (bsd3, data, deprecated, library)2016-10-13RenzoCarbonara
exinst-hashable (deprecated in favor of exinst)60.0Derive instances for the `hashable` library for your existential types. (bsd3, data, deprecated, library)2016-10-13RenzoCarbonara
exinst-serialise40.0Dependent pairs and their instances. (bsd3, data, library)2020-05-10RenzoCarbonara
existential40.0Existential types with lens-like accessors. (data, library, mit)2016-10-28SimonHudon, bandali
explicit-constraint-lens50.0Fully-flexible polymorphic lenses, without any bizarre profunctors (data, gpl, library)2017-12-30leftaroundabout
express50.0Dynamically-typed expressions involving applications and variables. (bsd3, data, library)2020-03-29rudymatela
expressions201.5Expressions and Formulae a la carte (bsd3, data, library, logic, math)2019-04-30jakubdaniel
expressions-z3110.0Encode and Decode expressions from Z3 ASTs (bsd3, data, library, logic, math)2019-04-30jakubdaniel
extend-record-data-th20.0TH to define a new record data type that extends the existing record data type. (bsd3, data, library)2019-07-07nakaji_dayo
extensible990.0Extensible, efficient, optics-friendly data types and effects (bsd3, data, library, records)2020-09-19FumiakiKinoshita
extensible-data50.0Sums/products/lists/trees which can be extended in other modules (data, library, public-domain)2012-02-17AaronBlack
extensible-sp22.0light-weight, extensible sums and products over types and kinds (data, library, mit)2017-04-22jadaska
extractable-singleton40.0A functor, where the "stored" value is isomorphic to Identity (bsd3, data, library)2017-05-10athanclark
f-algebra-gen40.0Generate a special f-algebra combinator from any data type. (data, library, mit)2019-07-19bolt12
facts40.0Refined types (bsd3, data, library)2018-06-16mrkkrp
fadno-braids420.0Braid representations in Haskell (algebra, bsd2, data, library, math)2020-12-27spopejoy
failable-list (deprecated in favor of enumerator)30.0A list-like type for lazy streams, which might terminate with an error. (bsd3, data, deprecated, error-handling, library)2009-12-07JohnMillikin
fair20.0Lists with fair choice (bsd3, data, library)2019-04-01
fair-predicates40.0Fair Predicates (data, library, public-domain)2009-03-25SebastianFischer
fake110.0Randomly generated fake data (bsd3, data, library)2020-01-30DougBeardsley
fallible70.0 (bsd3, data, library)2020-02-13matsubara0507
familiar-reflection (deprecated)40.0Reifies arbitrary terms into types that can be reflected back into terms (bsd3, data, deprecated, library, reflection)2018-05-08
family-tree80.0A family tree library for the Haskell programming language. (bsd3, data, genealogy, library)2015-04-16NathanVanDoorn
fast-builder510.0Fast ByteString Builder (data, library, public-domain)2020-09-10AkioTakano
fast-digits70.0Integer-to-digits conversion. (data, gpl, library)2020-02-03Bodigrim
fast-nats30.0Natural Numbers with no overhead (data, library, mit)2016-12-24mckeankylej
fasta80.0A simple, mindless parser for fasta files. (data, gpl, library)2017-02-13GregorySchwartz
fastsum120.0A fast open-union type suitable for 100+ contained alternatives (bsd3, data, library)2019-12-11patrick_thomson
fay-text40.0Fay Text type represented as JavaScript strings (data, fay, library, mit, text)2015-02-11AdamBergmark
fca80.0Algo for Formal Concept Analysis (agpl, data, library)2014-07-12Rpr
fclabels2722.25First class accessor labels implemented as lenses. (bsd3, data, lenses, library)2020-05-22AdamBergmark, ErikHesselink, SebastiaanVisser
fclabels-monadlib50.0MonadLib monadic interface for the "fclabels" package. (bsd3, data, library)2012-04-03BardurArantsson
fields60.0First-class record field combinators with infix record field syntax. (bsd3, data, library)2010-08-11JussiKnuuttila
fieldwise30.0Provides Fieldwise typeclass for operations of fields of records treated as independent components. (bsd2, data, library)2014-07-18GracjanPolak
file-embed8152.5Use Template Haskell to embed file contents directly. (bsd3, data, library)2020-07-06MichaelSnoyman
file-embed-lzma322.0Use Template Haskell to embed (LZMA compressed) data. (bsd3, data, library)2018-04-05phadej
file-embed-poly (deprecated)40.0Use Template Haskell to embed file contents directly. (bsd3, data, deprecated, library)2016-08-02
filecache40.0A cache system associating values to files. (bsd3, data, library)2018-11-23SimonMarechal
filediff40.0Diffing and patching module (bsd3, data, library)2015-05-25bgwines
filestore1010.0Interface for versioning file stores. (bsd3, data, library)2020-08-28GwernBranwen, JohnMacFarlane
filesystem-conduit (deprecated in favor of conduit-combinators)40.0Use system-filepath data types with conduits. (deprecated) (conduit, data, deprecated, library, mit)2014-03-20MichaelSnoyman
filesystem-trees40.0Recursively manipulate and traverse filesystems as lazy rose trees. (bsd3, data, library, system)2015-05-03AdamCurtis
filters-basic320.0Allows to change the structure of the function output. (RealFrac, data, filters, library, mit)2020-12-31OleksandrZhabenko
filtrable1910.0Class of filtrable containers (bsd3, data, library)2020-08-30MatthewFarkasDyck
fin592.0Nat and Fin: peano naturals and finite numbers (bsd3, data, dependent-types, library, math, singletons)2019-12-13phadej
fingertree-tf70.0Generic finger-tree structure using type families. (bsd3, data, data-structures, library)2014-10-05pawel834
finitary (deprecated)72.0A better, more type-safe Enum. (data, deprecated, gpl, library)2020-05-05koz_ross
finitary-derive (deprecated)30.0Flexible and easy deriving of type classes for finitary types. (data, deprecated, gpl, library)2019-11-26koz_ross
finitary-optics20.0Prisms and Isos between finitary types. (data, gpl, library)2020-06-06koz_ross
finite-field290.0Finite Fields (algebra, bsd3, data, library, math)2021-01-02MasahiroSakai
finite-typelits1142.0A type inhabited by finitely many values, indexed by type-level naturals. (bsd3, data, library)2018-07-12mniip
first-and-last40.0First and Last generalized to return up to n values (bsd3, data, library)2015-10-16andrus
first-class-patterns132.0First class patterns and pattern matching, using type families (bsd3, data, library, pattern)2019-10-01BrentYorgey, ReinerPope, shersh, vrom911
fit90.0FIT file decoder (bsd3, data, fitness, library, parsing)2016-03-04mgiles
fitsio70.0A library for reading and writing data files in the FITS data format. (data, library, physics)2008-12-31EricSessoms
fixed-length80.0Lists with statically known length based on non-empty package. (bsd3, data, library)2020-03-21HenningThielemann
fixed-list70.0A fixed length list type (bsd3, data, library)2015-05-10JobVranish
fixed-point (deprecated)40.0Binary fixed-point arithmetic (data, deprecated, game, library, math, mit, numerical)2011-08-27JakeMcArthur
fixed-point-vector (deprecated)40.0Unbox instances for the fixed-point package (data, deprecated, game, library, math, mit, numerical)2011-08-27JakeMcArthur
fixed-point-vector-space (deprecated)50.0vector-space instances for the fixed-point package (data, deprecated, game, library, math, mit, numerical)2011-08-27JakeMcArthur
fixed-vector1060.0Generic vectors with statically known size. (bsd3, data, library)2018-09-02AlexeyKhudyakov
fixed-vector-binary40.0Binary instances for fixed-vector (bsd3, data, library)2018-10-06AlexeyKhudyakov
fixed-vector-cborg40.0Binary instances for fixed-vector (bsd3, data, library)2018-10-06AlexeyKhudyakov
fixed-vector-cereal50.0Cereal instances for fixed-vector (bsd3, data, library)2018-10-06AlexeyKhudyakov
fixed-vector-hetero100.0Library for working with product types generically (bsd3, data, library)2020-05-30AlexeyKhudyakov
fixedprec180.0A fixed-precision real number type (bsd3, data, library, math)2018-11-06PeterSelinger
fixfile52.0File-backed recursive data structures. (data, lgpl, library)2017-01-07rev_null
fixpoint40.0Data types as fixpoints (bsd3, data, library)2008-10-14RomanLeshchinskiy
fixtime40.0Some fixes to the time package (bsd2, data, library)2014-11-03pharpend
flat402.25Principled and efficient bit-oriented binary serialization. (bsd3, data, library, parsing, serialization)2020-05-24PasqualinoAssini
flat-maybe40.0Strict Maybe without space and indirection overhead (bsd3, data, library)2015-11-11AndrasKovacs
flatbuffers192.0Haskell implementation of the FlatBuffers protocol. (bsd3, data, library, network, serialization)2020-11-14dcastro
flay50.0Work generically on your datatype without knowing its shape nor its contents. (bsd3, data, generics, library)2018-05-26RenzoCarbonara
flexible-time30.0simple extension of Data.UnixTime. (data, library, mit)2015-02-25tattsun
flexiwrap50.0Flexible wrappers (bsd3, data, library)2011-09-23IainAlexander
flexiwrap-smallcheck40.0SmallCheck (Serial) instances for flexiwrap (bsd3, data, library)2011-09-23IainAlexander
flight-igc90.0A parser for IGC files. (data, library, mpl, parsing)2018-09-11philderbeast
flight-kml50.0Parsing of pilot tracklogs dumped as KML. (data, flight, geography, gps, kml, library, mpl, parsing, xml)2018-09-11philderbeast
float-binstring40.0C99 printf "%a" style formatting and parsing (bsd3, data, library, numerical)2014-07-23AntonNikishaev
floating-bits50.0Conversions between floating and integral values. (bsd3, data, library)2015-06-18JonasScholl
fmlist4780.0FoldMap lists (bsd3, data, library)2020-08-18SjoerdVisscher
focus1360.0A general abstraction for manipulating elements of container data structures (containers, data, library, mit)2020-12-14NikitaVolkov
foldable-ix180.0Functions to find out the indices of the elements in the Foldable structures (data, library, mit)2021-01-02OleksandrZhabenko
folds92.0Beautiful Folding (bsd3, comonads, data, enumerator, library)2019-09-27EdwardKmett, EricMertens, ryanglscott
folds-common70.0A playground of common folds for folds (data, library, mit)2014-12-30jozefg
foscam-directory40.0Foscam File format (bsd3, data, file, library)2016-11-26TonyMorris
foscam-filename40.0Foscam File format (bsd3, data, file, library, parsing)2015-11-19TonyMorris
foscam-sort30.0Foscam File format (bsd3, data, file, library, parsing, program)2016-11-26TonyMorris
fraction70.0Fractions (bsd3, data, library)2016-07-19WolfgangJeltsch
free-functors1480.0Free functors, adjoint to functors that forget class constraints. (bsd3, category-theory, data, library, math)2020-10-05SjoerdVisscher
freq70.0Are you ready to get freaky? (data, library, mit, text)2019-04-29chessai
frontmatter90.0Parses frontmatter as used in Jekyll markdown files. (data, library, mit)2015-12-20yamadapc
fsmActions130.0Finite state machines and FSM actions (bsd3, data, library)2012-12-14AndyGimblett
fsnotify-conduit50.0Get filesystem notifications as a stream of events (conduit, data, library, mit)2018-06-04MichaelSnoyman
ftree40.0Depth-typed functor-based trees, both top-down and bottom-up (bsd3, data, library)2019-02-08ConalElliott
full-text-search160.0In-memory full text search engine (bsd3, data, library, search, text)2017-08-31DuncanCoutts, MikolajKonarski
functional-kmp30.0KMP implemented on haskell's built-in cons-cell-based lists. (bsd3, data, library)2015-11-12mniip
functor-classes-compat90.0Data.Functor.Classes instances for core packages (bsd3, data, library)2017-03-29phadej
functor-combinators140.0Tools for functor combinator-based program design (bsd3, data, library)2020-08-27jle
functor-combo60.0Functor combinators with tries & zippers (bsd3, data, library)2015-05-04ConalElliott
functor-infix52.0Infix operators for mapping over compositions of functors. Lots of them. (data, library, mit)2017-04-23vi
functor-monadic70.0Monad-style combinators for functors. (apache, data, library)2015-05-17jtapolczai, jtapolczai2
functor-products60.0General functor products for various Foldable instances (bsd3, data, library)2019-10-23jle
functor-utils50.0Collection of functor utilities, providing handy operators, like generalization of (.). (apache, data, library)2018-12-18danilo2, iamrecursion
fusion (deprecated in favor of streaming)50.0Effectful streaming library based on shortcut fusion techniques (bsd3, data, deprecated, library)2015-08-12JohnWiegley
fuzzyset260.0Fuzzy set for approximate string matching (bsd3, data, library)2019-12-22arbelos
fvars20.0Fast Mutable Vars (bsd3, data, library)2019-09-22erick
game-tree50.0Searching game trees with alpha-beta pruning (data, library)2009-03-20ColinAdams
garfield20.0TBA (bsd3, data, library)2018-11-15chessai
gather20.0An applicative for parsing unordered things, heterogenous sorting (bsd3, data, library, parsing, sorting)2020-05-12RobertHensing
gc (deprecated)52.0Poor Richard's Memory Manager (bsd3, data, deprecated, library)2019-05-02EdwardKmett, EricMertens, ryanglscott
gdiff140.0Generic diff and patch (bsd3, data, library)2014-06-27AndresLoeh, EelcoLempsink
general-prelude (deprecated)40.0Prelude replacement using generalized type classes where possible (bsd3, control, data, deprecated, library)2012-12-18JohnWiegley
generic-accessors40.0stringly-named getters for generic data (bsd3, data, library)2018-06-28GregHorn
generic-aeson280.0Derivation of Aeson instances using GHC generics. (bsd3, data, library)2020-11-10AdamBergmark, ErikHesselink
generic-binary40.0Generic Data.Binary derivation using GHC generics. (bsd3, data, generics, library)2011-11-12SebastiaanVisser
generic-match20.0First class pattern matching (data, library, mit)2020-08-29sgschlesinger
generic-monoid3280.0Derive monoid instances for product types. (bsd3, data, library)2020-06-14lukec
generic-storable50.0Generic implementation of Storable (bsd3, data, library)2012-05-11HideyukiTanaka
generic-trie202.0A map, where the keys may be complex structured data. (bsd3, data, library)2018-04-10EricMertens
generic-xmlpickler70.0Generic generation of HXT XmlPickler instances using GHC Generics (bsd3, data, library, xml)2019-11-13AdamBergmark, ErikHesselink
generics-sop-lens40.0Lenses for types in generics-sop (bsd3, data, generics, library)2020-03-30phadej
genericserialize60.0Serialization library using Data.Generics (bsd3, data, library)2008-03-16GwernBranwen
genvalidity-typed-uuid20.0Generators for Phantom-Typed version of UUID (data, library, mit)2020-04-16Norfair
geo-uk100.0High precision conversion between GPS and UK Grid (bsd3, data, library)2016-11-18tolysz
geohash30.0Geohash latitudes and longitudes. (bsd3, data, library)2009-10-24MariusEriksen
geojson470.0A thin GeoJSON Layer above the aeson library (bsd3, data, library)2020-04-03domdere, newmana
geojson-types60.0GeoJSON data types including JSON/BSON conversion. (bsd3, data, library)2016-05-16alios
ghc-compact80.0In memory storage of deeply evaluated data structure (bsd3, data, library)2017-07-23HerbertValerioRiedel
ghci-hexcalc90.0GHCi as a Hex Calculator interactive (bsd3, data, library)2019-07-20takenobut
ghcjs-promise60.0Bidirectional bidings to javascript's promise. (bsd3, data, library)2016-11-11AlejandroDuranPallares
ghost-buster40.0Existential type utilites (bsd3, data, library)2017-08-29lazersmoke
git-date70.0Bindings to the date parsing from Git. (data, gpl, library)2018-06-03StephenWeber
git-object (deprecated in favor of gitlib)40.0Git object and its parser (bsd3, data, deprecated, library)2012-01-20KazuYamamoto
global60.0Library enabling unique top-level declarations (bsd3, data, language, library, system)2014-12-02ByronJohnson
global-variables50.0Namespaced, global, and top-level mutable variables without unsafePerformIO. (bsd3, data, library, reflection)2012-03-03JeanMarieGaillourdet
gofer-prelude40.0The Gofer 2.30 standard prelude (bsd3, data, library)2011-05-09DonaldStewart
google-dictionary (deprecated)30.0Simple interface to the google.com/dictionary API (bsd3, data, deprecated, library)2014-01-23mitchellwrosen
google-mail-filters40.0Write GMail filters and output to importable XML (bsd3, data, library, web, xml)2016-03-31LiyangHu
googlepolyline42.0Google Polyline Encoder/Decoder (data, library, mit, text)2016-04-16lorne
gpcsets50.0Generalized Pitch Class Sets for Haskell. (bsd3, data, library)2009-05-14BruceMcCosa
gps60.0For manipulating GPS coordinates and trails. (bsd3, data, library)2015-02-08ThomasDuBuisson
gps2htmlReport60.0GPS to HTML Summary Report (bsd3, data, library, program)2012-01-29RobStewart
gpx-conduit40.0Read GPX files using conduits (bsd3, data, library)2012-08-12RyanTrinkle, ThomasDuBuisson
grapefruit-records80.0A record system for Functional Reactive Programming (bsd3, data, frp, library, reactivity)2017-04-06WolfgangJeltsch
graph40.0Class of graphs (bsd3, data, library)2018-06-27
graph-core30.0Fast, memory efficient and persistent graph implementation (data, library, mit)2016-02-04AlexanderThiemann, DavidLeuschner, StefanWehr
graph-utils40.0A simple wrapper & quasi quoter for fgl. (bsd3, data, data-structures, graphs, library)2010-06-29HiromiIshii
graphbuilder50.0A declarative, monadic graph construction language for small graphs (data, library, mit)2012-10-17JosephAbrahamson
graphene40.0A minimal Graph Theory library. (data, library, mit)2014-05-255outh
graphql-utils30.0GraphQL Utils (bsd3, data, graphql, library, utils)2020-09-13Lupino
graphql-w-persistent422.0GraphQL interface middleware for SQL databases. (data, database, development, graphs, language, library)2020-09-18jasonsychau
greplicate50.0Generalised replicate functions (data, library)2016-02-03TonyMorris
greskell400.0Haskell binding for Gremlin graph query language (bsd3, data, library)2020-12-29debugito
greskell-core200.0Haskell binding for Gremlin graph query language - core data types and tools (bsd3, data, library)2020-06-21debugito
group-with70.0Classify objects by key-generating function, like SQL GROUP BY (apache, data, library)2015-08-17ulikoehler
groupBy120.0Replacement definition of Data.List.GroupBy (data, library, mit)2018-01-30oisdk
grouped-list80.0Grouped lists. Equal consecutive elements are grouped. (bsd3, data, library)2019-05-11DanielDiaz
groupoid (deprecated)30.0A Groupoid class (bsd3, data, deprecated, library)2009-09-27StephenTetley
groups6180.0Groups (algebra, bsd3, data, library, math)2020-12-07NathanVanDoorn
grow-vector30.0Mutable vector with efficient appends (data, library, mit)2020-12-09NCrashed
gstorable90.0Generic implementation of Storable (bsd3, data, library)2018-01-31
gtfs60.0The General Transit Feed Specification format (bsd3, data, library)2010-09-27KeeganMcAllister
gtfs-realtime60.0GTFS RealTime protobafs library (autogenerated from .proto file) (bsd3, data, library)2018-12-09CthulhuDen
hBDD100.0An abstraction layer for BDD libraries (data, library)2015-05-24PeterGammie
hBDD-CMUBDD50.0An FFI binding to CMU/Long's BDD library (data, library)2015-05-24PeterGammie
hBDD-CUDD40.0An FFI binding to the CUDD library (data, library)2015-05-24PeterGammie
hDFA90.0A simple library for representing and minimising DFAs. (bsd3, data, library)2012-06-15PeterGammie
hOpenPGP1460.0native Haskell implementation of OpenPGP (RFC4880) (codec, data, library, mit)2020-10-31ClintAdams
hadoop-formats50.0Read/write file formats commonly used by Hadoop. (apache, data, library)2014-10-16JacobStanley
hadoop-rpc110.0Use the Hadoop RPC interface from Haskell. (apache, data, library)2016-02-25ConradParker, JacobStanley
hadoop-tools80.0Fast command line tools for working with Hadoop. (apache, data, program)2016-02-25ConradParker, JacobStanley
halves40.0Split or combine data structures to and from halves, quarters, eighths (bsd3, data, library)2018-10-15puffnfresh
handa-data30.0This package is deprecated. It formerly contained Haskell utilities for data structures and data manipulation. (data, library, mit)2016-08-01BrianBush
handa-geodata30.0Geographic and Geometric Data (data, geography, geometry, library, mit, program)2014-04-27BrianBush
har50.0HAR spec in Haskell (bsd3, data, library)2017-04-27HaishengWu
has70.0Entity based records (bsd3, data, library)2019-03-31YusakuHashimoto
has-th70.0Template Haskell function for Has records. (bsd3, data, library)2010-11-22ChrisDone
hash42.0Hashing tools (bsd3, data, hash, library)2013-03-27EdwardKmett, EricMertens, ryanglscott
hash-tree30.0Merkle Hash Tree (bsd3, data, library)2017-10-18KazuYamamoto
hashable8231.75A class for types that can be converted to a hash value (bsd3, data, library)2019-05-10BryanOSullivan, HerbertValerioRiedel, JohanTibell, MilanStraka
hashable-accelerate100.0A class for types which can be converted into a hash value (accelerate, bsd3, data, library)2020-08-28TrevorMcDonell
hashable-extras (deprecated in favor of hashable)30.0Higher-rank Hashable (bsd3, data, deprecated, hash, library)2016-01-17EdwardKmett
hashable-generics40.0Automatically generates Hashable instances with GHC.Generics. (bsd3, data, library)2016-05-25ClarkGaebel
hashable-orphans40.0Provides instances missing from Hashable. (bsd3, data, library)2017-04-05davean
hashable-time980.0Hashable instances for Data.Time (bsd3, data, library)2018-09-26phadej, alkar, davew
hashabler190.0Principled, portable & extensible hashing of data and types, including an implementation of the FNV-1a and SipHash algorithms. (bsd3, data, library)2016-11-20BrandonSimmons
hashflare60.0A library for working with HashFlare.io contracts and hashrates (bsd2, data, library)2017-01-20nbrk
hashmap (deprecated in favor of unordered-containers)462.0Persistent containers Map and Set based on hashing. (bsd3, data, deprecated, library)2018-01-03MilanStraka, ryanglscott
hashring30.0Efficient consistent hashing. (bsd3, data, library)2012-02-08MichaelCraig
hashtables6782.5Mutable hash tables in the ST monad (bsd3, data, library)2020-09-08ErikDeCastroLopo, GregoryCollins, mgmeier
hashtables-plus (deprecated)40.0Extensions for a "hashtables" library (data, data-structures, deprecated, library, mit)2014-04-29NikitaVolkov
haskell-modbus50.0A cereal-based parser for the Modbus protocol (bsd3, data, library, network, parsing)2014-04-15JasonHickner
haskell-qrencode130.0Haskell bindings for libqrencode. (bsd3, data, library)2013-01-17JamesSanders
haskus-utils-data250.0Haskus data utility modules (bsd3, data, library)2020-06-08SylvainHenry
haxparse50.0Readable HaxBall replays (data, library, mit, program)2013-09-18JoelTaylor
hbcd60.0Packed binary-coded decimal (BCD) serialization (data, library, mit)2012-06-20AndrewKay
hblock40.0A mutable vector that provides indexation on the datatype fields it stores (bsd3, data, library)2015-03-20HugoGomes
hdf5-lite60.0High-level bindings to the HDF5 "lite" interface (bsd3, data, library)2018-03-30ocramz
hebrew-time60.0Hebrew dates and prayer times. (data, library, mit)2019-02-17MichaelSnoyman
heckin20.0Oh heck, it's a heckin' case conversion library. (data, library, mit, text)2019-11-09maxdeviant
hedgehog-generic20.0GHC Generics automatically derived hedgehog generators (bsd3, data, development, library, testing)2019-04-17chessai
hedn350.0EDN parsing and encoding (bsd3, data, library)2020-11-17AlexanderBondarenko
hedn-functor20.0Base functor for EDN AST (bsd3, data, library)2019-03-16AlexanderBondarenko
here540.0Here docs & interpolated strings via quasiquotation (bsd3, data, library)2018-03-01TaylorHedberg
hetero-dict40.0Fast heterogeneous data structures (data, library, mit)2016-06-03winterland
hetero-map50.0Pure heterogeneous maps. (bsd3, data, data-structures, library)2009-01-12LukePalmer
heterogeneous-list-literals80.0Allows the use of tuples as literals for Heterogeneous collections (bsd3, data, library)2018-07-08DavidMD
heterolist40.0A heterogeneous list type (data, library, mit)2017-03-09clinton
hex280.0Convert strings into hexadecimal and back. (bsd3, data, library)2020-09-07TaruKarttunen
hexpat-pickle-generic (deprecated)30.0Picklers for de/serialising Generic data types to and from XML (bsd3, data, deprecated, library, xml)2013-10-28BrendanHay
hexquote60.0Hexadecimal ByteString literals, with placeholders that bind variables (bsd3, data, library)2011-09-14KeeganMcAllister
hexstring90.0Fast and safe representation of a hex string (data, library, mit)2015-04-21solatis
hgeos30.0Simple Haskell bindings to GEOS C API (data, geography, geometry, library, mit, text)2016-08-10rcook
hgrib90.0Unofficial bindings for GRIB API (data, gpl, library)2015-11-07mjakob
hierarchy70.0Predicated traversal of generated trees (bsd3, data, library)2018-05-11JohnWiegley, dnadales
higgledy140.0Partial types as a type constructor. (data, library, mit)2019-10-21i_am_tom
hinze-streams70.0Streams and Unique Fixed Points (bsd3, data, library)2009-05-03DonaldStewart
hips40.0an IPS patcher (bsd3, data, program)2011-03-29PatrickPalka
histogram-fill150.0Library for histograms creation. (bsd3, data, library)2018-10-06AlexeyKhudyakov
histogram-fill-binary30.0Binary instances for histogram-fill package (bsd3, data, library)2017-02-19AlexeyKhudyakov
histogram-fill-cereal40.0Binary instances for histogram-fill package (bsd3, data, library)2017-02-19AlexeyKhudyakov
hjcase (deprecated)20.0Jcase library for Haskell (data, deprecated, library, mit)2015-05-09seagreen
hjsonpointer (deprecated)471.75JSON Pointer library (data, deprecated, library, mit)2018-09-30seagreen
hjsonschema (deprecated)380.0JSON Schema library (data, deprecated, library, mit)2020-05-01seagreen
hkd-delta40.0Definition of "Delta structures" for higher kinded data. (bsd3, data, library)2019-06-06trevorcook
hkd-lens30.0Generic lens/prism/traversal-kinded data. (bsd3, data, library)2019-06-04trevorcook
hlist41.25Heterogeneous list (bsd3, data, library)2018-01-25
hmatrix-csv40.0CSV encoding and decoding for hmatrix. (bsd3, data, library)2015-04-08lyzrd
hmatrix-repa50.0Adaptors for interoperability between hmatrix and repa (bsd3, data, library, math)2016-09-22VivianMcPhail
hmemdb80.0In-memory relational database (bsd3, data, database, library)2014-05-10MiguelMitrofanov
hmpfr202.0Haskell binding to the MPFR library (bsd3, data, library, math)2018-01-16AlesBizjak, MichalKonecny
hnetcdf80.0Haskell NetCDF library (bsd3, data, library, program)2019-02-06DominicSteinitz, IanRoss
hnix782.5Haskell implementation of the Nix language (bsd3, data, library, nix, system)2021-01-04JohnWiegley, sjakobi, AntonLatukha
hocon40.0Small library for typesafe's configuration specification (bsd3, data, library, program, unclassified)2020-12-02aleperaltabazas
hodatime80.0A fully featured date/time library based on Nodatime (bsd3, data, library, time)2020-02-16jason_j
hole51.25Higher kinded type removal (bsd3, data, library)2013-09-08ThomasEding
holmes270.0Tools and combinators for solving constraint problems. (data, library, mit)2021-01-04i_am_tom
homotuple50.0Homotuple, all whose elements are the same type (apache, data, library)2020-06-12kakkun61
hoodle-types50.0Data types for programs for hoodle file format (bsd3, data, library)2016-07-25IanWooKim
hopenpgp-tools1730.0hOpenPGP-based command-line tools (agpl, codec, data, program)2021-01-03ClintAdams
horizon40.0Sunrise and sunset UTC approximations from latitude and longitude coordinates (bsd3, data, library)2015-02-26intractable
hostaddress50.0Network Host Addresses (data, library, mit)2020-02-13larsk
hpc-codecov180.0Generate codecov report from hpc data (bsd3, data, library, program, test)2021-01-12AtsuroHoshino
hreader-lens40.0Optics for hreader package (data, library, mit)2017-05-31dredozubov
hs-GeoIP80.0Haskell bindings to the MaxMind GeoIPCity database via the C library (bsd3, data, library)2013-03-15OzgunAtaman
hs-blake240.0A cryptohash-inspired library for blake2 (bsd3, data, library)2014-04-30tsuraan
hs-excelx60.0HS-Excelx provides basic read-only access to Excel 2007 and 2010 documents in XLSX format. (bsd3, data, library)2013-01-28MarkBaran
hs-multiaddr62.0Multiaddr library (apache, data, library)2018-04-25CMCDragonkai
hs-openmoji-data190.0The OpenMoji emoji dataset (bsd3, data, library, program, text)2020-12-29abrar
hs-php-session60.0PHP session and values serialization (bsd3, data, library)2014-10-25elblake
hs-pkg-config140.0Create pkg-config configuration files (bsd3, data, development, library)2014-12-24PeterTrsko
hschema40.0Describe schemas for your Haskell data types. (data, lgpl, library, schema)2018-11-14alonsodomin
hschema-aeson20.0Describe schemas for your Haskell data types. (data, json, lgpl, library, schema)2018-11-14alonsodomin
hschema-prettyprinter20.0Describe schemas for your Haskell data types. (data, lgpl, library, schema, text)2018-11-14alonsodomin
hschema-quickcheck30.0Describe schemas for your Haskell data types. (data, lgpl, library, schema, testing)2018-11-14alonsodomin
hset90.0Primitive list with elements of unique types. (bsd3, data, library)2015-10-29AlekseyUymanov
hsini172.0ini configuration files (bsd3, configuration, data, library)2018-06-05MagnusTherning
hsndfile240.0Haskell bindings for libsndfile (data, lgpl, library, sound)2015-09-18StefanKersten
hsndfile-storablevector60.0Haskell bindings for libsndfile (Data.StorableVector interface) (data, library, sound)2011-11-21StefanKersten
hsndfile-vector160.0Haskell bindings for libsndfile (Data.Vector interface) (data, library, sound)2011-11-21StefanKersten
htlset (deprecated in favor of htssets)40.0Heterogenous Set (bsd3, data, deprecated, library)2019-01-02kelemzol
htoml230.0Parser for TOML files (bsd3, configuration, data, json, language, library, parser, text)2016-11-07cies
htoml-megaparsec290.0Parser for TOML files (bsd3, configuration, data, language, library, text, toml)2018-10-08vmchale
htssets20.0Heterogenous Sets (bsd3, data, library)2019-01-03kelemzol
https-everywhere-rules20.0High-level access to HTTPS Everywhere rulesets. (data, library, mit)2014-08-24vi
https-everywhere-rules-raw60.0Low-level (i.e. XML) access to HTTPS Everywhere rulesets. (data, gpl, library)2014-08-24vi
httpspec40.0Specification of HTTP request/response generators and parsers (data, library, web)2010-10-05DavidLeuschner, StefanWehr
huffman52.0Pure Haskell implementation of the Huffman encoding algorithm (bsd3, compression, data, library)2012-02-28MaximeHenrion
hunt-searchengine60.0A search and indexing engine. (data, library, mit, text)2015-03-03alexbiehl
hunt-server50.0A search and indexing engine server. (data, mit, program, text)2015-03-01alexbiehl
hvect820.0Simple strict heterogeneous lists (data, library, mit)2017-02-03AlexanderThiemann
hw-aeson40.0Convenience functions for Aeson (bsd3, data, json, library)2020-04-14haskellworks
hw-all20.0Demo library (bsd3, conduit, data, library)2019-11-06haskellworks
hw-balancedparens520.0Balanced parentheses (bit, bsd3, data, data-structures, library, program, succinct-data-structures)2020-10-07newhoggy, haskellworks, GeorgeWilson
hw-bits592.0Bit manipulation (bit, bsd3, data, library)2020-05-16newhoggy, haskellworks, GeorgeWilson
hw-conduit110.0Conduits for tokenizing streams. (conduit, data, library, mit)2020-04-14newhoggy, haskellworks, GeorgeWilson
hw-conduit-merges40.0Additional merges and joins for Conduit (bsd3, conduit, data, library)2020-04-14haskellworks
hw-dump70.0File Dump (bit, bsd3, data, library, program)2020-04-14newhoggy, haskellworks
hw-eliasfano60.0Elias-Fano (bsd3, data, data-structures, library, program, succinct-data-structures)2020-04-14newhoggy, haskellworks
hw-excess300.0Excess (bsd3, data, data-structures, library, succinct-data-structures)2020-04-14newhoggy, haskellworks
hw-int160.0Additional facilities for Integers (bsd3, data, library)2020-04-26haskellworks
hw-json332.0Memory efficient JSON parser (bsd3, data, library, program)2020-10-17newhoggy, haskellworks
hw-json-lens60.0Lens for hw-json (bsd3, data, data-structures, json, library, succinct-data-structures)2020-04-14haskellworks
hw-json-simd100.0SIMD-based JSON semi-indexer (bsd3, data, library, program)2020-04-14newhoggy, haskellworks
hw-json-simple-cursor70.0Memory efficient JSON parser (bsd3, data, library, program)2020-04-14newhoggy, haskellworks
hw-json-standard-cursor150.0Memory efficient JSON parser (bsd3, data, library, program)2020-05-04newhoggy, haskellworks
hw-mquery80.0Monadic query DSL (bsd3, data, library, program)2020-04-14newhoggy, haskellworks
hw-packed-vector80.0Packed Vector (bsd3, data, library, program, vector)2020-04-14newhoggy, haskellworks
hw-parser80.0Simple parser support (bsd3, data, library, parser)2020-04-14haskellworks
hw-prim870.0Primitive functions and data types (bsd3, data, library)2020-04-14newhoggy, haskellworks, GeorgeWilson
hw-prim-bits70.0Primitive support for bit manipulation (bsd3, data, library, program)2017-09-08haskellworks
hw-rankselect592.0Rank-select (bit, bsd3, data, data-structures, library, program, succinct-data-structures)2020-04-14newhoggy, haskellworks, GeorgeWilson
hw-rankselect-base260.0Rank-select base (bit, bsd3, data, data-structures, library, succinct-data-structures)2020-06-09newhoggy, haskellworks, GeorgeWilson
hw-simd90.0SIMD library (bit, bsd3, data, library, simd)2020-04-14haskellworks
hw-streams70.0Primitive functions and data types (bsd3, data, library)2020-04-14newhoggy, haskellworks
hw-string-parse140.0String parser (bit, bsd3, data, library)2017-08-26newhoggy, haskellworks, GeorgeWilson
hw-succinct40.0Succint datastructures (conduit, data, library, mit)2016-10-24newhoggy, haskellworks
hw-uri60.0Supports IO on URIs (bsd3, data, library, program)2020-03-12newhoggy, haskellworks
hw-vector (deprecated in favor of hw-prim)40.0Vector type with convenient typeclass instances (bsd3, data, deprecated, library)2016-10-28haskellworks
hw-xml262.0XML parser based on succinct data structures. (bsd3, data, data-structures, library, program, succinct-data-structures, xml)2020-04-14newhoggy, haskellworks
hwsl270.0Hashing with SL2 (data, library, mit)2017-11-03srijs
hwsl2-bytevector50.0A hashed byte-vector based on algebraic hashes and finger trees (data, library, mit)2015-07-15srijs
hwsl2-reducers50.0Semigroup and Reducer instances for Data.Hash.SL2 (data, library, mit)2015-07-03srijs
hybrid-vectors150.0Hybrid vectors e.g. Mixed Boxed/Unboxed vectors (bsd3, data, library, vector)2018-01-18EdwardKmett, ryanglscott
idempotent30.0Idempotent monoids (data, library, mit)2014-08-18alynn
identifiers60.0Numeric identifiers for values. (bsd3, data, library)2017-05-20awagner83
idna440.0Implements IDNA (RFC 3490). (bsd3, data, library, rfc, text)2014-01-06GeorgePollard
ieee754-parser (deprecated in favor of data-binary-ieee754)30.0 (data, deprecated, library)2009-04-11JohnMillikin
implicit-params60.0Named and unnamed implicit parameters with defaults. (bsd3, data, library)2013-12-23ShaneOBrien
impossible70.0Set of data and type definitions of impossible types. Impossible types are useful when declaring type classes / type families instances that should not be expanded by GHC until a specific type is provided in order to keep the types nice and readable. (apache, data, library)2018-12-18danilo2, iamrecursion
incremental390.0incremental update library (bsd3, data, library)2020-09-19FumiakiKinoshita
incremental-computing90.0Incremental computing (bsd3, data, library)2016-07-25WolfgangJeltsch
incremental-maps40.0Package for doing incremental computations on maps (bsd3, data, library)2016-05-25jelken
increments40.0type classes for incremental updates to data (bsd3, data, library)2015-01-07JohnLato
indexation50.0Tools for entity indexation (data, library, mit)2018-10-08NikitaVolkov, IrinaArtemeva, OShev
indexed-list-literals1212.0Type safe indexed list literals (bsd3, data, library)2020-04-30DavidMD
indexed-profunctors2450.0Utilities for indexed profunctors (bsd3, data, lenses, library, optics, profunctors)2019-10-11AdamGundry, AndresLoeh, phadej, arybczak
indexed-traversable7380.0FunctorWithIndex, FoldableWithIndex, TraversableWithIndex (bsd2, data, library)2020-12-27phadej
indexed-traversable-instances840.0More instances of FunctorWithIndex, FoldableWithIndex, TraversableWithIndex (bsd2, data, library)2020-12-15phadej
indices60.0Multi-dimensional statically bounded indices. (data, library, mit)2014-12-30MikeLedger
infinite-search50.0Exhaustively searchable infinite sets. (algorithms, bsd3, data, library, monads, search)2009-01-09LukePalmer
inflist40.0An infinite list type and operations thereon. (bsd3, data, library)2012-02-05JamesFisher
ini1210.0Quick and easy configuration files in the INI format. (bsd3, configuration, data, library)2019-01-02ChrisDone, joehillen
ini-qq30.0Quasiquoter for INI (bsd3, configuration, data, library)2016-07-15kseo
initialize40.0Initialization and Deinitialization of 'Storable' values. (bsd3, data, library)2018-10-25chessai
inj60.0A class for injective (one-to-one) functions (data, library)2018-07-06int_index
inj-base40.0'Inj' instances for 'base' (bsd3, data, library)2018-07-13int_index
int-cast212.0Checked conversions between integral types (bsd3, data, library)2018-04-03HerbertValerioRiedel
intern572.0Efficient hash-consing for arbitrary data types (bsd3, data, data-structures, library)2020-09-30EdwardKmett, ryanglscott
interpolate1482.0String interpolation done right (data, library, mit, text)2020-06-05SimonHengel
interpolatedstring-perl6802.5QuasiQuoter for Perl6-style multi-line interpolated strings (data, library, public-domain)2019-10-15AudreyTang
interpolatedstring-qq40.0QuasiQuoter for Ruby-style multi-line interpolated strings. (bsd3, data, library)2010-07-18ErikCharlebois
interpolatedstring-qq-mwotton (deprecated in favor of interpolatedstring-qq)40.0DO NOT USE THIS. interpolatedstring-qq works now. (bsd3, data, deprecated, library)2010-07-18MarkWotton
interpolatedstring-qq220.0QuasiQuoter for multi-line interpolated strings (bsd3, data, library)2019-05-06isovector
interpolator100.0Runtime interpolation of environment variables in records using profunctors (data, library, mit)2020-07-13asariley, dfithian, MossPrescott
interval-functor20.0Intervals of functors. (bsd3, data, library)2020-07-11robrix
intset40.0Pure, mergeable, succinct Int sets. (bsd3, data, library)2013-12-07SamTruzjan
invariant8050.0Haskell98 invariant functors (bsd2, control, data, library)2020-10-01NicolasFrisby, ryanglscott
invertible230.0bidirectional arrows, bijective functions, and invariant functors (bsd3, composition, control, data, library)2020-08-07DylanSimon
invertible-hlist40.0invertible functions and instances for HList (bsd3, composition, control, data, library)2017-03-07DylanSimon
involutive-semigroups20.0Semigroups with involution. (algebra, bsd3, data, library, math)2020-07-30nosewings
io-storage620.0A key-value store in the IO monad. (bsd3, data, database, library, system)2009-08-06WillDonnelly, frasertweedale
io-streams6652.5Simple, composable, and easy-to-use stream I/O (bsd3, data, io-streams, library, network)2020-09-07DougBeardsley, GregoryCollins
io-string-like100.0Classes to handle Prelude style IO functions for different datatypes (bsd3, data, library)2018-01-14clinton
ioctl60.0Type-safe I/O control package (data, library, mit, system)2010-02-20MaciejPiechotka
ipld-cid40.0IPLD Content-IDentifiers <https://github.com/ipld/cid> (bsd3, data, library)2019-05-23KimAltintop, jkarni
irc200.0A small library for parsing IRC messages. (bsd3, data, library, network)2014-12-16TrevorElliott
irc-fun-messages40.0Types and functions for working with the IRC protocol. (data, irc, library, network, public-domain)2016-09-05akrasner
irc-fun-types90.0Common types for IRC related packages (data, irc, library, network, public-domain)2016-09-05akrasner
ireal61.5Real numbers and intervals with relatively efficient exact arithmetic. (bsd3, data, library, math)2015-10-31sydow
is50.0Generic pattern predicates (bsd3, data, library)2018-11-19vlopez
isbn61.5ISBN Validation and Manipulation (apache, data, library)2020-11-14charukiewicz
isevaluated30.0Check whether a value has been evaluated (data, ghc, library, mit)2012-07-23BertramFelgenhauer, SveinOveAas
iso3166-country-codes200.0A datatype for ISO 3166 country codes (data, library)2017-02-16JonFairbairn
iso639130.0ISO-639-1 language codes (bsd3, data, library)2015-01-25HugoGomes
iso8583-bitmaps70.0Parse and merge ISO 8583-style bitmaps (bsd3, data, library)2018-04-03IlyaPortnov
iso8601-duration50.0Types and parser for ISO8601 durations (bsd3, data, library)2018-06-23albertov
it-has50.0Automatically derivable Has instances. (bsd3, data, library)2020-05-18dnikolovv
iterIO100.0Iteratee-based IO with pipe operators (bsd3, data, enumerator, library, system)2012-04-19AmitLevy, DavidMazieres, DanielBGiffin
iteratee450.0Iteratee-based I/O (bsd3, data, library, system)2014-05-19JohnLato
iteratee-compress30.0Enumeratees for compressing and decompressing streams (bsd3, codec, data, library)2014-05-19JohnLato, MaciejPiechotka
iteratee-mtl (deprecated in favor of iteratee)50.0Iteratee-based I/O (bsd3, data, deprecated, library, system)2010-10-27JohnLato
iteratee-parsec40.0Package allowing parsec parser initeratee (data, library, mit, parsing)2010-11-28MaciejPiechotka
iteratee-stm40.0Concurrent iteratees using STM (bsd3, data, library)2012-04-10JohnLato
ix-shapable130.0Reshape multi-dimensional arrays. (bsd3, data, library)2009-05-18TracyWadleigh
javaclass60.0Java class files (data, library)2016-03-07TonyMorris
jinquantities52.0Unit conversion and manipulation library. (bsd3, data, library, math, physics, program)2018-09-12Novadiscovery
joinlist (deprecated)60.0Join list - symmetric list type (bsd3, data, deprecated, library)2010-02-14StephenTetley
joint280.0Trying to compose non-composable (bsd3, control, data, library)2021-01-01iokasimovmt
json-alt90.0Union 'alternative' or Either that has untagged JSON encoding. (bsd3, data, library, tools)2018-11-28MichalGajda
json-autotype592.5Automatic type declaration for JSON input data (bsd3, data, library, program, tools, type-provider)2020-04-19MichalGajda, PeterSimons
json-extra40.0Utility functions to extend Aeson (bsd2, data, library)2016-11-24TobiasDammers
json-incremental-decoder70.0Incremental JSON parser with early termination and a declarative DSL (data, json, library, mit, parsing)2017-04-07NikitaVolkov
json-pointer30.0JSON Pointer parsing and interpretation utilities (data, json, library, mit, parsing)2019-01-22NikitaVolkov
json-schema120.0Types and type classes for defining JSON schemas. (bsd3, data, library)2018-07-07AdamBergmark, ErikHesselink
json-state60.0Keep program state in JSON files. (data, database, library, public-domain)2016-01-28akrasner
json-syntax50.0High-performance JSON parser and encoder (bsd3, data, library)2020-11-18andrewthad
json-togo20.0Effectful parsing of JSON documents (data, library, mit)2015-06-27srijs
json-tokens30.0Tokenize JSON (bsd3, data, library)2019-09-30andrewthad
json240.0Library provides support for JSON. (bsd3, data, json, library, text)2011-05-29YuriyIskra
json2-types30.0Defined JSON data types and function for renders JSON to string. (bsd3, data, json, library, text)2011-04-06YuriyIskra
jsons-to-schema70.0JSON to JSON Schema (data, json, library, mit, program, web)2017-07-30garetht
jsonschema-gen52.0JSON Schema generator from Algebraic data type (bsd3, data, json, library, text)2017-08-29yuga
judy120.0Fast, scalable, mutable dynamic arrays, maps and hashes (bsd3, data, library)2018-04-16DonaldStewart, MarkWotton
jump50.0Nothing to see here, move along (data, library, mit)2016-03-14MichaelSnoyman
kafka40.0TBA (bsd3, data, library)2018-08-30chessai
kanji190.0Perform 漢字検定 (Japan Kanji Aptitude Test) level analysis on Japanese Kanji (bsd3, data, library, program)2020-01-26fosskers
karakuri40.0Good stateful automata (bsd3, data, library)2013-10-21FumiakiKinoshita
katip5170.0A structured logging framework. (bsd3, data, library, logging, text)2020-08-17MichaelXavier
katip-datadog50.0Datadog scribe for the Katip logging framework (bsd3, data, library, logging, text)2020-10-15MichaelXavier
katip-elasticsearch180.0ElasticSearch scribe for the Katip logging framework. (bsd3, data, library, logging, text)2020-10-15MichaelXavier
katip-logzio80.0Logz.IO scribe for the Katip logging framework (bsd3, data, library, logging, text)2019-03-06MichaelXavier
katydid110.0A haskell implementation of Katydid (bsd3, data, library, program)2018-09-10awalterschulze
kd-tree20.0A simple k-d tree implementation (bsd3, data, library)2014-07-25BenGamari
kdt100.0Fast and flexible k-d trees for various types of point queries. (data, library, mit)2016-03-22giogadi
keyed30.0Generic indexing for many data structures (bsd3, data, library)2015-08-13wyager
keyword-args40.0Extract data from a keyword-args config file format (data, library, mit, program)2015-04-23jsl, stackbuilders, sestrella
kicad-data52.0Parser and writer for KiCad files. (data, library, mit)2018-01-04kasbah
kickchan30.0Kick Channels: bounded channels with non-blocking writes (bsd3, concurrency, data, library)2014-02-06JohnLato
kind-apply130.0Utilities to work with lists of types (bsd3, data, library)2019-09-04AlejandroSerrano
kind-generics400.0Generic programming in GHC style for arbitrary kinds and GADTs. (bsd3, data, library)2020-05-03AlejandroSerrano
kind-generics-th1260.0Template Haskell support for generating `GenericK` instances (bsd3, data, library)2020-10-01AlejandroSerrano
kleene-list50.0A list type based on the Kleene star and plus. (data, library)2020-05-02oisdk
kontra-config40.0JSON config file parsing based on unjson (bsd3, data, library)2016-09-21GracjanPolak, MikhailGlushenkov, jonathanjouty_scrive
lambda-sampler70.0Boltzmann sampler utilities for lambda calculus. (bsd3, data, library)2017-08-13mbendkowski
language-conf50.0Conf parsers and pretty-printers for the Haskell programming language. (data, library, mit)2016-08-24yamadapc
language-hcl70.0HCL parsers and pretty-printers for the Haskell programming language. (data, library, mit)2016-08-12yamadapc
laop140.0Matrix programming library (bsd3, data, library, mit)2020-06-05bolt12
largeword110.0Provides Word128, Word192 and Word256 and a way of producing other large words if required. (bsd3, data, library)2015-12-13DominicSteinitz
layered-state70.0Control structure similar to Control.Monad.State, allowing multiple nested states, distinguishable by provided phantom types. (apache, data, library)2018-12-18danilo2, iamrecursion
layouting60.0General layouting library. Currently supports layouting 2D areas and can be used as a backend for text pretty printing or automatic windows layouting managers. (apache, data, library)2018-12-18danilo2, iamrecursion
lazy-hash50.0Identifiers for not-yet-computed values (data, gpl, library)2017-07-24leftaroundabout
lazy-hash-cache50.0Storing computed values for re-use when the same program runs again. (data, gpl, library)2017-07-24leftaroundabout
lazy-priority-queue30.0Lazy-Spined Monadic Priority Queues (bsd3, control, data, library, program)2019-09-19MarioBlazevic
lazyarray50.0Efficient implementation of lazy monolithic arrays (lazy in indexes). (bsd3, data, library)2008-02-19MilanStraka
lazyset60.0Set and Map from lazy/infinite lists. (data, library, mit)2016-12-15carlos_freund
lens11303.0Lenses, Folds and Traversals (bsd2, data, generics, lenses, library)2020-04-15EdwardKmett, EricMertens, JohnWiegley, ryanglscott
lens-accelerate190.0Instances to mix lens with Accelerate (accelerate, bsd3, data, lenses, library)2020-08-28TrevorMcDonell
lens-action480.0Monadic Getters and Folds (bsd3, data, generics, lenses, library)2019-09-13EdwardKmett, EricMertens, ryanglscott
lens-core (deprecated in favor of lens)81.5A placeholder for a future lens core package. (bsd2, data, deprecated, generics, lenses, library)2020-09-24EdwardKmett
lens-datetime112.0Lenses for Data.Time.* types (bsd3, data, lenses, library)2016-04-29GergelyRisko, MihalyBarasz
lens-family3801.75Lens Families (bsd3, data, lenses, library)2020-02-16RussellOConnor
lens-family-core3760.0Haskell 2022 Lens Families (bsd3, data, lenses, library)2020-02-16RussellOConnor
lens-family-th1930.0Generate lens-family style lenses (bsd3, data, library)2020-05-21DanBurton
lens-labels (deprecated in favor of proto-lens)140.0Integration of lenses with OverloadedLabels. (bsd3, data, deprecated, library)2018-10-12JudahJacobson, gnezdo
lens-properties50.0QuickCheck properties for lens (bsd3, data, lenses, library)2018-01-09EdwardKmett, EricMertens, ryanglscott
lens-th-rewrite20.0Rewrites Template Haskell splices using the API (bsd3, data, library, program)2020-04-05DavidJohnson
lens-time40.0lens for Data.Time (data, library, mit)2013-08-14TatsuyaTouma
lens-utils50.0Collection of missing lens utilities. (apache, data, library)2018-12-18danilo2, iamrecursion
lenses70.0Simple Functional Lenses (bsd3, data, library)2018-07-12JobVranish
lensref50.0References which can be joined and on which lenses can be applied (bsd3, control, data, library)2014-05-18PeterDivianszky
lenz (deprecated)70.0Van Laarhoven lenses (bsd3, data, deprecated, lenses, library)2020-01-16
lenz-mtl (deprecated)30.0mtl operations with Van Laarhoven lenses (control, data, deprecated, lenses, library)2019-10-25
lenz-template (deprecated)50.0Van Laarhoven lens templates (data, deprecated, lenses, library, template-haskell)2017-11-15
lhae (deprecated)60.0Simple spreadsheet program (data, deprecated, program)2010-09-28AlexanderBau
lhe40.0Parser and writer for Les-Houches event files (data, library, mit, physics)2012-02-13ScottLawrence
libBF880.0A binding to the libBF library. (data, library, mit, program)2020-07-01IavorDiatchki
librdkafka20.0TBA (bsd3, data, library)2019-05-17chessai
libroman52.0Use Roman Numerals as a Numeric Datatype (sort of) (bsd3, data, library, math, numerical)2016-10-10ahakki
line-size60.0Display the number of bytes of each line (data, gpl, program)2017-03-27AlanHawkins
linear-accelerate200.0Lifting linear vector spaces into Accelerate (accelerate, algebra, bsd3, compilers-interpreters, concurrency, data, library, math, parallelism)2020-08-28EdwardKmett, TrevorMcDonell, ryanglscott
linear-maps50.0Finite maps for linear use (bsd3, data, library, program)2009-05-28PeterDivianszky, ZsoltDollenstein
lingo190.0File extension based programming language detection (bsd3, data, library, program)2020-09-02patrick_thomson, tclem, rewinfrey
link-relations50.0Use web link relation types (RFC 5988) in Haskell (data, library, public-domain, web)2016-01-28akrasner
linkedhashmap80.0Persistent LinkedHashMap data structure (bsd3, data, library)2015-02-07abasko
list-fusion-probe50.0testing list fusion for success (bsd3, data, library)2018-08-02JoachimBreitner
list-grouping (deprecated in favor of split)30.0Functions for grouping a list into sublists (bsd3, data, deprecated, library)2011-02-13BrandonSimmons
list-singleton32.0Easily and clearly create lists with only one element in them. (data, library)2020-06-02fozworth
list-tries320.0Tries and Patricia tries: finite sets and maps for list keys (bsd3, data, data-structures, library)2020-05-12MattiNiemenmaa, arybczak
list-tuple70.0List-like operations for tuples (apache, data, library)2020-06-12kakkun61
list-zip-def30.0Provides zips with default values. (data, library, public-domain)2018-12-19muesli4
list-zipper50.0A list zipper (bsd3, data, library)2020-06-06TonyMorris, qfpl
lists50.0Functions for dealing with lists (bsd3, data, library)2013-10-10ChrisDone
lists-flines20.0Additional data and structures to some 'String'-related lists. (data, library, mit)2020-10-05OleksandrZhabenko
listsafe180.0Safe wrappers for partial list functions, supporting MonadThrow. (apache, data, library, list, safe)2015-05-13jtapolczai, jtapolczai2
literals60.0Non-overloaded functions for concrete literals. (data, library, mit)2013-03-30JulianFleischer
llrbtree40.0Purely functional sets and heaps (bsd3, data, library)2012-01-31KazuYamamoto
llvm-base-types90.0The base types for a mostly pure Haskell LLVM analysis library (bsd3, data, library)2013-11-12TristanRavitch
llvm-data-interop30.0A low-level data interoperability binding for LLVM (bsd3, data, library)2013-11-12TristanRavitch
lockfree-queue980.0Michael and Scott lock-free queues. (bsd3, concurrent, data, library)2015-02-06RyanNewton, ryanglscott, peter_fogg
log-utils60.0Utils for working with logs (bsd3, data, program)2017-07-21MikhailGlushenkov, arybczak, jonathanjouty_scrive
logfloat110.0Log-domain floating point numbers (bsd3, data, library, math, natural-language-processing, statistics)2015-10-02WrenThornton
longboi40.0Dependently-typed linked list implementation (data, library, mit)2018-01-16chessai
lookup-tables70.0Statically generate lookup tables using Template Haskell. (data, library)2015-08-31JakeMcArthur
lrucache1822.0a simple, pure LRU cache (bsd3, data, library)2018-11-29CarlHowells
lrucaching-haxl20.0Combine lrucaching and haxl. (bsd3, concurrency, data, library, lrucache)2020-09-02Lupino
lub80.0information operators: least upper bound (lub) and greatest lower bound (glb) (bsd3, concurrency, data, library, other)2012-02-06ConalElliott
luhn40.0An implementation of Luhn's check digit algorithm. (bsd3, data, library)2009-12-20HenryBucklow
lz4-bytes40.0Bindings to LZ4 (bsd3, data, library)2020-03-09andrewthad
machines-attoparsec30.0Parse machines streams with attoparsec parsers. (bsd3, control, data, enumerator, library, parsing, text)2019-01-31davean
machines-encoding20.0Transcode encodings with machines. (bsd3, control, data, enumerator, library, text)2019-01-31davean
macho70.0Parser for Mach-O object format. (bsd3, data, library)2010-03-25ErikCharlebois
magma60.0magma is an algebraic structure. (algebra, bsd3, data, data-structures, library, math)2020-07-12KatsutoshiItoh
make-monofoldable-foldable30.0Make a MonoFoldable type into an ordinary Foldable type. (data, library, mit)2017-03-10clinton
markov40.0Simple interpreter for Markov's normal algorithms (bsd3, data, library)2010-06-14IlyaPortnov
markup60.0Abstraction for HTML-embedded content (bsd3, data, library, web)2018-04-11athanclark
mason340.0Fast and extensible bytestring builder (bsd3, data, library)2020-09-10FumiakiKinoshita
massiv1782.5Massiv (Массив) is an Array Library. (bsd3, data, data-structures, library, parallelism)2020-12-21lehins
massiv-io312.0Import/export of Image files into massiv Arrays (bsd3, data, data-structures, library)2020-11-04lehins
massiv-test320.0Library that contains generators, properties and tests for Massiv Array Library. (bsd3, data, data-structures, library, parallelism)2020-12-21lehins
math-interpolate20.0Class for interpolation of values (bsd3, data, library)2019-05-04ThomasEding
math-metric20.0Typeclass for metric spaces (bsd3, data, library)2019-05-04ThomasEding
matrices940.0native matrix based on vector (bsd3, data, library)2018-12-21kaizhang
maybe-justify50.0Simple higher order function for Maybe (data, library, public-domain)2015-06-24taksuyu
mbox82.0Read and write standard mailbox files. (bsd3, data, library, system, text)2017-08-16GershomBazerman
means30.0calculate varieties of mean/average using semigroup. (data, library, mit)2016-06-13winterland
mech40.0mecha are the most complex composite machines known to humanity, lets build them well! (bsd2, concurrency, control, data, library, network, system)2016-08-11CarterSchonwald
mechs30.0mecha are the most complex composite machines known to humanity, lets build them well! (bsd2, concurrency, control, data, library, network, system)2016-08-11CarterSchonwald
medea200.0A schema language for JSON. (data, library, mit)2020-08-05koz_ross
median-stream70.0Constant-time queries for the median of a stream of numeric data. (bsd3, data, library)2016-11-24jmc41493
meep50.0A silly container (bsd2, data, library)2018-08-04DmitryMalikov, MatveyAksenov
memis70.0Memis Efficient Manual Image Sorting (data, mit, program)2017-02-01johannesgerer
memoize380.0A memoization library (bsd3, data, library)2016-09-03JesseTov
memorable-bits60.0Generate human memorable strings from binary data. (bsd2, data, library)2019-03-11lukec
merkle-log70.0Merkle Tree Logs (bsd3, data, library)2019-05-28larsk
messagepack130.0Serialize instance for Message Pack Object (data, library, mit)2016-12-01rodrigosetti, saep
meta-misc50.0Utility library providing miscellaneous meta-programming utilities. (bsd3, data, generics, language, library, utility)2014-12-02ByronJohnson
metadata50.0metadata library for semantic web (bsd3, data, library, text, web)2016-03-25KatsutoshiItoh
metar60.0Australian METAR (aviation, bsd3, data, library, program)2019-04-12TonyMorris, qfpl
metar-http40.0HTTP for METAR (aviation, bsd3, data, library, program)2019-02-07TonyMorris
metric40.0Metric spaces. (data, library, mit)2014-05-30vi, SimonAlling
metrics100.0High-performance application metric tracking (data, library, mit)2017-08-09IanDuncan
mgeneric70.0Generics with multiple parameters (data, library, mit)2015-03-21rbocquet
microlens8402.5A tiny lens library with no dependencies (bsd3, data, lenses, library)2020-11-17Artyom
microlens-contra50.0True folds and getters for microlens (bsd3, data, lenses, library)2018-10-01Artyom
microlens-each (deprecated in favor of microlens)40.0'each' for microlens (bsd3, data, deprecated, lenses, library)2015-04-19Artyom
microlens-ghc2672.0microlens + array, bytestring, containers, transformers (bsd3, data, lenses, library)2020-11-17Artyom
microlens-mtl4320.0microlens support for Reader/Writer/State from mtl (bsd3, data, lenses, library)2019-06-20Artyom
microlens-platform2900.0microlens + all batteries included (best for apps) (bsd3, data, lenses, library)2020-11-17Artyom
microlens-th10320.0Automatic generation of record lenses for microlens (bsd3, data, lenses, library)2021-01-06Artyom
minecraft40.0TBA (bsd3, data, library)2019-07-11chessai, goolord
mini-egison100.0Template Haskell Implementation of Egison Pattern Matching (data, library, mit, pattern, program)2020-03-04SatoshiEgi, momohatt
minilens52.0A minimalistic lens library, providing only the simplest, most basic lens functionality. (data, gpl, lens, library)2016-05-31RaminHonary
minlen40.0Express the minimum length of a container in its type (data, library, mit)2016-07-04MichaelSnoyman
minst-idx (deprecated in favor of mnist-idx)62.0Read and write IDX data that is used in e.g. the MINST database. (data, deprecated, gpl, library)2015-05-30muzzle
mlist (deprecated in favor of List)60.0Monadic List alternative to lazy I/O (bsd3, data, deprecated, library)2009-05-02EyalLotem
mmsyn2-array170.0A library with less dependencies that can be used for multiple Ord a => a -> b transformations. (binary-search, data, development, language, library, mit)2020-12-18OleksandrZhabenko
mmsyn5110.0Various additional operations on lists (some with intermediate Monads) (data, library, lists, mit)2020-10-29OleksandrZhabenko
mnist-idx110.0Read and write IDX data that is used in e.g. the MNIST database. (data, lgpl, library)2017-03-27muzzle
model180.0Derive a model of a data type using Generics (bsd3, data, generics, library, reflection)2019-05-29PasqualinoAssini
monad-branch50.0Monadic abstraction for computations that can be branched and run independently. (apache, data, library)2018-12-18danilo2, iamrecursion
monad-primitive90.0Type class for monad transformers stack with pirimitive base monad. (bsd3, data, library)2013-03-01AlexeyKhudyakov
monad-state40.0Utility library for monads, particularly those involving state. (bsd3, control, data, library, monads)2014-12-02ByronJohnson
monad-statevar50.0Concise, overloaded accessors for IORef, STRef, TVar (bsd3, data, library)2013-02-11JoeyAdams
monad-supply100.0Stateful supply monad (control, data, library, mit, monad, monads)2020-09-14GeoffHulette
mono-foldable (deprecated in favor of mono-traversable)40.0Folds for monomorphic containers (bsd3, data, deprecated, library)2013-09-11JohnLato
mono-traversable8182.0Type classes for mapping, folding, and traversing monomorphic containers (data, library, mit)2019-12-25GregWeber, MichaelSnoyman
mono-traversable-instances1460.0Extra typeclass instances for mono-traversable (data, library, mit)2020-07-19MichaelSnoyman
mono-traversable-keys180.0Type-classes for interacting with monomorphic containers with a key (bsd3, containers, data, data-structures, library)2019-01-30recursion_ninja
mono-traversable-wrapper40.0Wrapper providing Foldable instance for MonoFoldables. (data, library, mit)2017-02-26oisdk
monoid50.0Monoid type classes, designed in modular way, distinguish Monoid from Mempty and Semigroup. This design allows mempty operation don't bring Semigroups related constraints until (<>) is used. (apache, data, library)2018-12-18danilo2, iamrecursion
monoid-extras1510.0Various extra monoid-related definitions and utilities (bsd3, data, library)2019-10-20BrentYorgey, RyanYates, jeffreyrosenbluth, bergey
monoid-record40.0Support for modifying record fields of monoidal type (bsd3, data, library)2009-04-20RobinGreen
monoid-subclasses2482.0Subclasses of Monoid (algebra, bsd3, data, library, text)2020-01-22MarioBlazevic
monoid-transformer260.0Monoid counterparts to some ubiquitous monad transformers (bsd3, data, library)2018-02-16HenningThielemann
monoidal-containers860.0Containers with monoidal accumulation (bsd3, data, library)2019-11-26BenGamari, abrar
monoidplus30.0Extra classes/functions about monoids (data, library, math, public-domain)2011-11-12AaronBlack
monoids (deprecated in favor of reducers)90.0Deprecated: Use 'reducers' (bsd3, data, deprecated, library, math, numerical)2012-02-09DanielWagner, EdwardKmett
monomorphic (deprecated in favor of singletons)50.0Library to convert polymorphic datatypes to/from its monomorphic represetation (bsd3, data, deprecated, library)2015-05-19HiromiIshii
months20.0Month, YearMonth, Quarter, YearQuarter types (bsd3, data, library, time)2019-11-06phadej
monus50.0a 'Monus' is a commutative monoid that allows a notion of substraction. (bsd3, data, library)2018-10-19chessai
morphisms20.0It's all about functions (control, data, library, mit)2019-01-04iokasimovmt
morphisms-functors30.0Functors, theirs compositions and transformations (control, data, library, mit)2019-01-15iokasimovmt
morphisms-functors-inventory20.0Inventory is state and store (control, data, library, mit)2019-01-12iokasimovmt
morphisms-objects20.0Algebraic structures (control, data, library, mit)2019-01-08iokasimovmt
mrm50.0Modular Refiable Matching, first-class matches (bsd3, data, library)2016-03-07suhorng
msgpack190.0A Haskell implementation of MessagePack (bsd3, data, library)2019-03-27HerbertValerioRiedel, HideyukiTanaka
msgpack-aeson40.0Aeson adapter for MessagePack (bsd3, data, library)2015-04-04HerbertValerioRiedel, HideyukiTanaka
msgpack-binary40.0A Haskell implementation of MessagePack (bsd3, data, library, program)2020-03-26iphydf
msgpack-rpc-conduit30.0A MessagePack-RPC Implementation (bsd3, data, library)2020-03-26iphydf
msgpack-types40.0A Haskell implementation of MessagePack. (bsd3, data, library)2020-03-26iphydf
mtree40.0Tree with Meta and Content parameters (data, library, public-domain)2011-09-17RahulGopinath
multi-trie50.0Trie of sets, as a model for compound names having multiple values (data, library, mit)2016-11-07vadimvinnik
multibase190.0Self-identifying base encodings, implementation of <https://github.com/multiformats/multihash> (bsd3, data, library)2021-01-12KimAltintop, jkarni
multihash32.0Multihash library and CLI executable (bsd3, data, library, program)2015-08-21LukeHoersten
multihash-cryptonite60.0Self-identifying hashes, implementation of <https://github.com/multiformats/multihash> (bsd3, data, library)2019-05-23KimAltintop, jkarni
multihashmap40.0hashmap from keys to hashsets (bsd3, data, library)2018-06-13chessai
multipart-names50.0Handling of multipart names in various casing styles (bsd3, data, library)2015-04-02nedervold
multirec-binary40.0Generic Data.Binary instances using MultiRec. (bsd3, data, generics, library)2009-05-25SebastiaanVisser
multivector (deprecated)40.0Vectors of packed tuples (bsd3, data, deprecated, library)2018-05-05
murmur-hash2340.0MurmurHash2 implementation for Haskell. (bsd3, data, digest, library)2016-05-01ThomasSchilling
murmur3110.0Pure Haskell implementation of the MurmurHash3 x86_32 algorithm. (data, hash, library, mit, murmur, public-domain)2020-06-12PhilippeLaprade, jprupp
murmurhash350.032-bit non-cryptographic hashing (data, digest, library, public-domain)2011-06-22NisWegmann
mutable110.0Automatic piecewise-mutable references for your types (bsd3, data, library)2020-07-10jle
mutable-containers1730.0Abstactions and concrete implementations of mutable containers (data, library, mit)2018-02-02MichaelSnoyman
mutable-iter (deprecated)30.0iteratees based upon mutable buffers (bsd3, data, deprecated, library)2011-04-30JohnLato
mutable-lens130.0Interoperate mutable references with regular lens (apache, data, generics, lenses, library)2020-11-25infinity0
mwc-random-accelerate160.0Generate Accelerate arrays filled with high quality pseudorandom numbers (accelerate, bsd3, data, library)2020-08-28TrevorMcDonell
mx-state-codes20.0ISO 3166-2:MX State Codes and Names (bsd3, data, library)2019-11-22lysergia
n-ary-functor50.0An n-ary version of Functor (data, library, public-domain)2020-01-25gelisam
nagios-perfdata50.0Parse Nagios performance data. (bsd3, data, library)2015-01-25fractalcat
named-records90.0Flexible records with named fields. (data, library, mit, records)2013-05-26JulianFleischer
named-sop30.0Dependently-typed sums and products, tagged by field name (data, library, mit)2020-02-20sjsch
names50.0Type level names. (data, library, mit, type-system)2013-04-02JulianFleischer
namespace40.0A Generic Haskell library for managing namespaces (bsd3, data, library)2019-01-17xuhao
nat80.0Lazy binary natural numbers (bsd3, data, library, math)2012-08-13JanChristiansen
natural-number40.0Natural numbers tagged with a type-level representation of the number. (bsd3, data, library, type-system)2010-10-14GregoryCrosswhite
natural-numbers270.0Natural numbers (bsd3, data, library, math)2012-07-13WolfgangJeltsch
naturals30.0Constructors and related functions for natural numbers (bsd3, data, library)2011-08-09ChristopherHoward, infrared
nbt90.0A parser/serializer for Minecraft's Named Binary Tag (NBT) data format. (bsd3, data, library)2018-01-22AdamFoltzer
ndjson-conduit30.0Conduit-based parsing and serialization for newline delimited JSON. (data, library, mit)2016-09-15srijs
neither (deprecated in favor of either, monad-control)70.0Provide versions of Either with good monad and applicative instances. (deprecated) (bsd3, data, deprecated, library)2012-05-14MichaelSnoyman
nested-sequence70.0List-like data structures with O(log(n)) random access (bsd3, data, data-structures, library)2016-07-09BalazsKomuves
nestedmap60.0A library for nested maps (bsd3, data, library)2015-06-09kirstin
network-address50.0IP data structures and textual representation (data, library, mit, network)2011-09-07SebastianNowicki
network-conduit (deprecated in favor of conduit-extra)310.0Stream socket data using conduits. (deprecated) (bsd3, conduit, data, deprecated, library, network)2014-04-02MichaelSnoyman
network-data250.0Library for network data structures and their serialization. (bsd3, data, library, network)2015-05-18ThomasDuBuisson
network-enumerator (deprecated)60.0Enumerators for network sockets (data, deprecated, enumerator, library, mit)2012-11-25JohnMillikin
network-msgpack-rpc (deprecated in favor of msgpack-rpc-conduit)60.0A MessagePack-RPC Implementation (bsd3, data, deprecated, library)2020-03-08iphydf
network-stream40.0ByteString and Text streams for networking (data, gpl, library)2011-11-08JaredHance
newtype-zoo50.0Newtype Wrapper Zoo (bsd3, data, library)2020-11-30SvenHeyll
nextstep-plist30.0NextStep style plist parser and printer (bsd3, data, library, parsing)2012-09-30JanChristiansen
nf60.0NF data type to statically enforce normal form (bsd3, data, library)2015-05-02EdwardYang
ngrams-loader30.0Ngrams loader based on http://www.ngrams.info format (data, library, mit, program)2014-03-25YorickLaupa
niagra52.0High performance CSS EDSL (data, library, mit)2017-04-12natesymer
no-value20.0A type class for choosing sentinel-like values (bsd3, data, library)2019-07-28ChrisDornan
non-empty210.0List-like structures with static restrictions on the number of elements (bsd3, data, library)2019-05-23HenningThielemann
non-empty-sequence (deprecated in favor of nonempty-containers)50.0Non-empty sequence (bsd3, data, deprecated, library)2019-11-13OmariNorman
non-empty-text60.0Non empty Data.Text type (data, library, nonempty, text)2018-02-16acatton
non-empty-zipper72.0The Zipper for NonEmpty (bsd3, data, library)2018-06-07fresheyeball
nonempty-alternative60.0NonEmpty for Alternative types (bsd3, data, library)2016-03-16guaraqe
nonempty-lift20.0nonempty structure (bsd3, data, library)2019-08-13chessai
nonempty-vector1620.0Non-empty vectors (bsd3, data, library)2020-11-19topos
normalization-insensitive70.0Normalization insensitive string comparison (bsd3, data, library, text, unicode)2017-08-03harendra, ppelleti
notzero40.0A data type for representing numeric values, except zero. (bsd3, data, library, numeric)2018-05-31TonyMorris, qfpl
ntype50.0N-ary sum/product types (bsd3, data, library)2018-08-27int_index
num-non-negative20.0Non-negative numbers (data, library)2019-01-26int_index
number-length140.0Number of digits in a number in decimal and hexadecimal representation. (bsd3, data, library)2018-04-15PeterTrsko
numbered-semigroups100.0A sequence of semigroups, for composing stuff in multiple spatial directions. (data, lgpl, library)2017-10-27leftaroundabout
numbering30.0Combinators for creating bijections from some type to the natural numbers. (bsd3, data, library)2012-03-10DanielSchuessler
numbers502.0Various number types (bsd3, data, library, math)2018-05-14CarterSchonwald, DanBurton, DanielWagner, JohnWiegley, LennartAugustsson, RichardSmith, RussellOConnor
objectid40.0Rather unique identifier for things that need to be stored (bsd3, data, library)2014-10-05tsuraan
observable-sharing62.0Simple observable sharing (bsd3, data, library)2015-10-13mararon
oi50.0Library for purely functional lazy interactions with the outer world. (bsd3, data, library, program)2016-03-27NobuoYamashita
once90.0memoization for IO actions and functions (data, gpl, library)2018-12-01DmitryBogatov, KAction
oneOfN60.0Anonymous coproduct type (data, library, public-domain)2011-08-10JamesCook
oneormore50.0A never-empty list type. (data, library, mit)2014-08-04thinkpad20
onpartitions30.0partition lenses (bsd3, data, library)2017-07-05PaoloVeronelli
oo-prototypes190.0Support for OO-like prototypes (data, gpl, library)2014-08-25DmitryIvanov, MateuszKowalczyk
open-adt30.0Open algebraic data types. (bsd3, data, library)2018-11-25Woehr
open-adt-tutorial20.0Open algebraic data type examples. (bsd3, data, library, program)2018-11-25Woehr
open-union80.0Extensible, type-safe unions. (data, library, mit, program)2018-04-20BenFoppa
open-witness70.0open witnesses (bsd3, data, library)2020-09-22AshleyYakeley
opench-meteo70.0A Haskell implementation of the Swiss Meteo Net data API (bsd3, data, library)2019-04-06RolandSenn
openexchangerates40.0Fetch exchange rates from OpenExchangeRates.org (data, library)2013-09-07StephenWeber
openpgp90.0Implementation of the OpenPGP message format (data, library)2013-08-10StephenWeber
openpgp-asciiarmor550.0OpenPGP (RFC4880) ASCII Armor codec (codec, data, library, mit)2019-06-30ClintAdams
optics912.5Optics as an abstract interface (bsd3, data, lenses, library, optics)2020-04-15AdamGundry, AndresLoeh, phadej, arybczak
optics-core3182.25Optics as an abstract interface: core definitions (bsd3, data, lenses, library, optics)2020-08-05AdamGundry, AndresLoeh, phadej, arybczak
optics-extra3612.0Extra utilities and instances for optics-core (bsd3, data, lenses, library, optics)2020-04-15AdamGundry, AndresLoeh, phadej, arybczak
optics-th3390.0Optics construction using TemplateHaskell (bsd3, data, lenses, library, optics)2020-08-21AdamGundry, AndresLoeh, phadej, arybczak
optics-vl240.0Utilities for compatibility with van Laarhoven optics (bsd3, data, lenses, library, optics)2020-04-15AdamGundry, AndresLoeh, phadej, arybczak
optimal-blocks30.0Optimal Block boundary determination for rsync-like behaviours (bsd3, data, library, program)2015-04-07tsuraan
option30.0A strict version of Maybe (data, library, mit)2016-01-02georgerogers42
optional-args1420.0Optional function arguments (bsd3, data, library)2018-02-14GabrielGonzalez
ord-adhoc30.0Creating Ord instances instantly (bsd3, data, library)2013-02-01FumiakiKinoshita
order-maintenance60.0Algorithms for the order maintenance problem with a safe interface (bsd3, data, library)2017-01-06WolfgangJeltsch
order-statistic-tree50.0Order statistic trees based on weight-balanced trees (bsd3, data, library)2018-11-02MZiatdinov
ordered-containers1750.0Set- and Map-like types that remember the order elements were inserted (bsd3, data, library)2019-07-05DanielWagner
orders60.0basic orders (bsd3, data, library)2013-08-02DavidDarais
oref20.0Owned references in the Ownership Monad (bsd3, data, library)2020-04-13mcgirr
org-mode30.0Parser for Emacs org-mode files. (bsd3, data, library)2020-03-13fosskers
orgmode60.0Org Mode library for haskell (bsd3, data, library)2015-09-16lally
orgmode-parse290.0A collection of Attoparsec combinators for parsing org-mode flavored documents. (bsd3, data, library)2018-10-31ParnellSpringmeyer
origami70.0An un-SYB framework for transforming heterogenous data through folds (bsd3, data, library)2015-10-24nedervold
osm-conduit40.0Parse and operate on OSM data in efficient way (bsd3, data, geography, library)2016-03-05przembot
osx-ar40.0Parser for OS X static archive format. (bsd3, data, library)2010-03-25ErikCharlebois
overloaded-records82.0Overloaded Records based on current GHC proposal. (bsd3, data, library)2016-08-17PeterTrsko
pack50.0Bidirectional fast ByteString packer/unpacker (bsd3, data, library)2015-02-25capsjac
packed-dawg80.0Generation and traversal of highly compressed directed acyclic word graphs. (bsd3, data, library)2015-10-28AndrasKovacs
packed-multikey-map30.0Efficient “spreadsheet table” like maps with multiple marginals (data, gpl, library)2017-09-29leftaroundabout
packer70.0Fast byte serializer and unserializer (bsd3, data, library)2015-10-13VincentHanquez
packer-messagepack70.0MessagePack Serialization an Deserialization for Packer (bsd3, data, library)2017-10-22mtesseract
packman1280.0Serialization library for GHC (bsd3, data, ghc, library, serialization)2018-01-19JostBerthold
pager60.0Open up a pager, like 'less' or 'more' (bsd2, data, library, program, system, text)2015-05-16pharpend
pagination70.0Framework-agnostic pagination boilerplate (bsd3, data, library)2017-07-31mrkkrp
palette310.0Utilities for choosing and creating color schemes. (bsd3, data, library)2019-02-22BrentYorgey, jeffreyrosenbluth, bergey
pandora550.0A box of patterns and paradigms (control, data, library, mit)2021-01-17iokasimovmt
parameterized-data80.0Parameterized data library implementing lightweight dependent types (bsd3, data, library)2016-07-08AlfonsoAcosta, HoseinAttarzadeh, ugeorge, ingo
parse-gcstats80.0Parse machine-readable GHC GC stats. (bsd3, data, library)2020-06-30MateuszKowalczyk
parsergen40.0TH parser generator for splitting bytestring into fixed-width fields (bsd3, data, library)2014-11-20AkioTakano, JasperVanDerJeugt, JohnLato, MichaelBaikov
parsestar70.0NMR-STAR file format parser. (bsd3, data, library, program)2014-11-03MichalGajda
partial-order3430.0Provides typeclass suitable for types admitting a partial order (bsd3, data, library)2020-03-08mtesseract
partial-records20.0Template haskell utilities for constructing records with default values (bsd3, data, library)2019-10-22mniip
password172.0Hashing and checking of passwords (bsd3, data, library)2020-12-08cdepillabout, nideco
password-instances52.0typeclass instances for password package (bsd3, data, library)2020-05-04cdepillabout, nideco
patch-combinators30.0A library for patching functions and data structures (bsd3, data, library)2013-10-29EmilAxelsson
patches-vector30.0Patches (diffs) on vectors: composable, mergeable, and invertible. (bsd3, data, library)2016-11-29LiamOConnorDavis
pattern-trie70.0Pattern tries (data, library, mpl)2020-05-24romanb
peano (deprecated)60.0Peano numbers (data, deprecated, library, math)2015-03-27
peano-inf90.0Lazy Peano numbers including observable infinity value. (bsd3, data, library)2008-12-05PeterDivianszky
pecoff60.0Parser for PE/COFF format. (bsd3, data, library)2010-03-25ErikCharlebois
pedestrian-dag40.0A pedestrian implementation of directed acyclic graphs (bsd3, data, data-structures, library)2018-09-19JakubWaszczuk
pem4620.0Privacy Enhanced Mail (PEM) format reader and writer. (bsd3, data, library)2018-03-02VincentHanquez
peparser70.0A parser for PE object files. (bsd3, data, library)2011-09-29IanGraves
perfecthash30.0A perfect hashing library for mapping bytestrings to values. (bsd3, data, data-structures, library)2016-05-02MarkWotton
perhaps62.0Perhaps, a monad (bsd2, data, library)2018-04-24EdwardKmett
persist120.0Minimal serialization library with focus on performance (bsd3, data, library, parsing)2020-05-14minad
persist-state30.0Serialization library with state and leb128 encoding (bsd3, data, library, parsing)2020-06-21minad
persistent-equivalence60.0Persistent equivalence relations (aka union-find) (bsd3, data, library)2011-10-01ChrisSmith
persistent-refs30.0Haskell references backed by an IntMap for persistence and reversibility. (bsd3, data, library)2015-04-14AdamFoltzer
persistent-vector82.0A persistent sequence based on array mapped tries (bsd3, data, library)2020-10-29TristanRavitch
pez140.0A Pretty Extraordinary Zipper library (bsd3, data, library)2012-01-28BrandonSimmons
pgp-wordlist1060.0Translate between binary data and a human-readable collection of words. (bsd3, data, library, serialization)2019-05-17quchen
phasechange30.0Freezing, thawing, and copy elision (bsd3, data, library)2012-06-30GaborLehel
phash80.0Haskell bindings to pHash, the open source perceptual hash library (data, gpl, library)2017-03-23MichaelXavier
phone-metadata (deprecated)60.0Phonenumber Metadata - NOTE: this is now deprecated! (data, deprecated, library)2016-06-23vijayanant, raghuugare
phone-numbers90.0Haskell bindings to the libphonenumber library (bsd3, data, library)2019-10-11ChristianMarie
phonetic-languages-filters-array200.0Allows to change the structure of the function output. (RealFrac, data, filters, library, mit)2020-12-31OleksandrZhabenko
phonetic-languages-rhythmicity20.0Allows to estimate the rhythmicity metrices for the text (usually, the Ukrainian poetic one) (data, game, language, library, math, mit, phonetic-languages)2020-10-20OleksandrZhabenko
pipes-files90.0Fast traversal of directory trees using pipes (bsd3, data, library)2018-07-23JohnWiegley, dnadales
pipes-interleave90.0Interleave and merge streams of elements (bsd3, data, library)2018-08-05BenGamari
pkcs10170.0PKCS#10 library (apache, data, library)2016-11-02ktimothy
pktree40.0Implementation of the PKTree spatial index data structure (data, library)2012-04-10StephenWeber
plaid50.0Plaid.com api integration library (bsd3, data, library, network, plaid, program, web)2020-03-17v0d1ch
plailude62.0plaimi's prelude (data, gpl, library)2015-03-13alexander
planar-graph50.0A representation of planar graphs (bsd3, data, graphs, library, maths)2012-04-27IvanMiljenovic
plucky62.0A library and technique for handling errors via plucking constraints (bsd3, data, library)2020-01-21parsonsmatt
plur40.0Plurality monad: Zero, one, or at least two. (bsd3, data, library)2019-02-12joelb
point-octree40.0Point octree, with bounding boxes (bsd3, data, library)2016-07-04MichaelLitchard
pointed2530.0Pointed and copointed data (bsd3, data, library)2020-09-30EdwardKmett, EricMertens, ryanglscott
pointedlist530.0A zipper-like comonad which works as a list, tracking a position. (bsd3, data, library)2014-04-26JeffWheeler, RussellOConnor, fread2281
poly-arity60.0Tools for working with functions of undetermined arity (bsd3, data, functions, library)2017-03-19athanclark
poly-control30.0This package provides abstraction for polymorphic controls, like PolyMonads or PolyApplicatives. (apache, data, library)2016-01-30danilo2, iamrecursion
poly-rec50.0Polykinded extensible records (data, gpl, library)2020-07-07jpgarcia
polyToMonoid50.0Polyvariadic functions mapping to a given monoid (bsd3, data, library)2010-10-14KevinJardine
polydata80.0Wrap together data and it's constraints. (data, library, mit)2017-10-16clinton
polymap52.0Polygonal maps (data, library, public-domain)2015-09-24Shockk
polytypeable30.0Typeable for polymorphic types. (bsd3, data, library)2009-04-08LennartAugustsson
polytypeable-utils40.0Utilities for polytypeable. (bsd3, data, library)2009-10-21KiYungAhn
polyvariadic172.0Creation and application of polyvariadic functions (bsd3, data, library)2020-02-04fgaz
pool (deprecated in favor of resource-pool)50.0Thread-safe resource pools. (deprecated) (bsd3, data, database, deprecated, library, yesod)2012-01-25MichaelSnoyman
popkey110.0Static key-value storage backed by poppy (data, library, mit)2020-06-08identicalsnowflake
porcupine-core22.0Express portable, composable and reusable data tasks and pipelines (arrows, combinators, control, data, json, library, mit, numerical, pipes, program, streaming)2019-10-09YvesPares
porcupine-http60.0A location accessor for porcupine to connect to HTTP sources/sinks (arrows, combinators, control, data, library, mit, program, web)2019-10-09YvesPares
porcupine-s320.0A location accessor for porcupine to connect to AWS S3 sources/sinks (arrows, aws, cloud, combinators, control, data, library, mit, program)2019-10-09YvesPares
possible30.0Three valued Data.Maybe (bsd3, data, library)2019-02-17tolysz
possibly20.0type Possibly a = Either String a (bsd3, data, library)2019-03-16ChrisDornan
postgresql-copy-escape70.0Format data to feed to a PostgreSQL COPY FROM statement (bsd3, data, library)2019-11-16JoeyAdams
prairie30.0A first class record field library (bsd3, data, library)2020-10-09parsonsmatt
pred-set40.0Simple cached predicates (bsd3, data, library)2016-04-26athanclark
pred-trie170.0Predicative tries (bsd3, data, library)2018-11-20athanclark
predicate-class40.0Helper class for passing context along a predicate value (data, library, mit)2018-03-23HeliWang
predicate-transformers42.0A library for writing predicates and transformations over predicates in Haskell (bsd3, data, library)2020-01-11edmundnoble
predicate-typed290.0Predicates, Refinement types and Dsl (bsd3, data, library)2020-11-20gbwey
predictive30.0Predict the future, backtrack on failure (bsd3, data, library)2016-08-22esz
prednote90.0Evaluate and display trees of predicates (bsd3, data, library)2015-09-10OmariNorman
prednote-test (deprecated in favor of prednote)50.0Tests and QuickCheck generators to accompany prednote. (bsd3, data, deprecated, library, program)2015-01-02OmariNorman
prefix-units50.0A basic library for SI/binary prefix units (bsd3, data, library)2015-11-22IustinPop
prelude-plus30.0Prelude for rest of us (bsd3, control, data, system)2009-10-14YusakuHashimoto
pretty-hex1220.0A library for hex dumps of ByteStrings (bsd3, data, library)2019-12-04IavorDiatchki
pretty-loc20.0Tracking and highlighting of locations in source files (bsd3, compilers-interpreters, data, diagnostics, library, pretty-printer, text)2019-06-19GuerricChupin
pretty-tree180.0Pretty-print trees (bsd3, data, library)2012-10-26IvanMiljenovic
preview50.0The method of previewing data (instead of wholly show-ing it) (bsd3, data, library)2017-08-06AlexanderThiemann
prim-instances40.0Prim typeclass instances (bsd3, data, library)2019-06-26chessai
prim-uniq710.0Opaque unique identifiers in primitive state monads (data, dependent-types, library, public-domain)2020-04-15BertramFelgenhauer, JamesCook, RyanTrinkle
primitive12452.25Primitive memory-related operations (bsd3, data, library)2020-06-25HerbertValerioRiedel, Bodigrim, andrewthad, chessai, topos
primitive-addr710.0Addresses to unmanaged memory (bsd3, data, library)2019-07-18andrewthad
primitive-atomic20.0Wrappers for primops around atomic operations (bsd3, data, library)2019-05-23andrewthad
primitive-convenience20.0convenience class for PrimMonad m/PrimState m (bsd3, data, library)2019-09-26chessai
primitive-foreign20.0using the `Prim` interface for the FFI (bsd3, data, library)2019-11-15chessai
primitive-offset400.0Types for offsets into unboxed arrays (bsd3, data, library)2019-05-30andrewthad
primitive-simd52.0SIMD data types and functions (bsd3, data, library)2016-02-01JonasScholl
primitive-stablename20.0primitive operations on StableNames (bsd3, data, library)2019-05-16chessai
primitive-unaligned310.0Unaligned access to primitive arrays (bsd3, data, library)2020-01-09andrewthad
primitive-unlifted1320.0Primitive GHC types with unlifted types inside (bsd3, data, library)2020-11-02andrewthad
print-info40.0Can be used to coordinate the printing output. (data, library, mit)2020-09-01OleksandrZhabenko
priority-queue60.0Simple implementation of a priority queue. (bsd3, data, library)2010-10-20JamesCook
procrastinating-structure (deprecated)40.0Pure structures that can be incrementally created in impure code (data, deprecated, library)2009-06-15JakeMcArthur
procrastinating-variable50.0Haskell values that cannot be evaluated immediately. (bsd3, data, library)2009-06-08GregoryCrosswhite
product-isomorphic190.0Weaken applicative functor on products (bsd3, data, library)2018-08-26KeiHibino
profunctor-arrows40.0Profunctor arrows (bsd3, data, library, profunctors)2020-03-07cmk
profunctor-misc20.0Profunctor miscellany (bsd3, data, library, profunctors)2019-10-30cmk
profunctor-optics90.0A compact optics library compatible with the typeclasses in profunctors. (bsd3, data, lenses, library, profunctors, program)2020-03-09cmk
proj4-hs-bindings40.0Haskell bindings for the Proj4 C dynamic library. (data, library)2013-09-22PavelPenev
prolens62.0Profunctor-based lightweight implementation of optics (data, lenses, library, mpl, optics)2020-10-13shersh
propeller20.0A Simple Propagator Library (bsd3, data, library)2020-02-10MichaelSzvetits
property-list60.0Apple property list parser (data, library, parsing, public-domain, xml)2015-06-19JamesCook
proto-lens1251.25A lens-based implementation of protocol buffers in Haskell. (bsd3, data, library)2020-06-04JudahJacobson, gnezdo, JinwooLee
proto-lens-arbitrary170.0Arbitrary instances for proto-lens. (bsd3, data, library)2020-06-04JudahJacobson, gnezdo, JinwooLee
proto-lens-combinators (deprecated in favor of proto-lens)50.0Utilities functions to proto-lens. (bsd3, data, deprecated, library)2018-10-12JudahJacobson, gnezdo
proto-lens-descriptors (deprecated in favor of proto-lens)80.0Protocol buffers for describing the definitions of messages. (bsd3, data, deprecated, library)2017-07-31JudahJacobson, gnezdo
proto-lens-optparse110.0Adapting proto-lens to optparse-applicative ReadMs. (bsd3, data, library)2020-06-04JudahJacobson, gnezdo, JinwooLee
proto-lens-protobuf-types230.0Basic protocol buffer message types. (bsd3, data, library)2020-06-04JudahJacobson, gnezdo, JinwooLee
proto-lens-protoc1010.0Protocol buffer compiler for the proto-lens library. (bsd3, data, library, program)2020-06-04JudahJacobson, gnezdo, JinwooLee
protobuf130.0Google Protocol Buffers via GHC.Generics (bsd3, data, library)2020-02-15NathanHowell, YorickLaupa
protobuf-native60.0Protocol Buffers via C++ (bsd3, data, library, program)2014-10-16MaxwellSwadling
protobuf-simple60.0Simple Protocol Buffers library (proto2) (data, library, mit, program)2018-09-05mrijkeboer
proxied60.0Make functions consume Proxy instead of undefined (bsd3, data, library)2019-02-20ryanglscott
proxy80.0proxy helpers (data, library, mit)2018-05-16chessai
proxy-kindness50.0A library for kind-polymorphic manipulation and inspection of Proxy values (bsd3, data, library)2013-11-15BrandonSimmons
proxy-mapping40.0Mapping of Proxy Types (bsd3, data, library)2017-12-04DanielVanDenEijkel
pseudo-boolean110.0Reading/Writing OPB/WBO files used in pseudo boolean competition (bsd3, constraints, data, library, logic, optimisation, optimization)2019-10-14MasahiroSakai
psql-utils40.0PostgreSQL Simple util tools. (bsd3, data, library, postgresql)2020-09-14Lupino
ptr290.0Abstractions for operations on pointers (data, library, mit, ptr)2020-07-20NikitaVolkov
publicsuffix380.0The publicsuffix list exposed as proper Haskell types (data, library, mit)2020-05-26wereHamster
pure-priority-queue50.0A pure priority queue. (bsd3, data, library)2009-12-13BradLarsen
pure-priority-queue-tests40.0Tests for the pure-priority-queue package (bsd3, data, program)2009-10-12BradLarsen
pureMD51450.0A Haskell-only implementation of the MD5 digest (hash) algorithm. (bsd3, cryptography, data, library)2016-05-09ThomasDuBuisson
purebred-email160.0types and parser for email messages (including MIME) (agpl, data, email, library)2020-07-13frasertweedale, romanofski
pvar412.0Mutable variable with primitive values (bsd3, data, library)2020-10-19lehins
qm-interpolated-string120.0Implementation of interpolated multiline strings (data, interpolated, library, public-domain)2018-02-04unclechu
qr-imager (deprecated in favor of qrcode-juicypixels, qrcode-core)100.0Library to generate images. (bsd3, data, deprecated, image, library, qr)2018-09-25vmchale
qr-repa50.0Library to generate QR codes from bytestrings and objects and scale image files (bsd3, data, library, program)2016-12-15
quadratic-irrational110.0An implementation of quadratic irrationals (algorithms, data, library, math, mit)2020-04-15ion, Bodigrim
quandl-api50.0Quandl.com API library (api, bsd3, data, library, web)2015-05-18PeterVanDenBrand
quantities80.0Unit conversion and manipulation library. (bsd3, data, library, math, physics, program)2015-11-07jdreaver
querystring-pickle40.0Picklers for de/serialising Generic data types to and from query strings (data, library, network, web)2014-06-23BrendanHay
queue (deprecated)90.0Abstraction typeclasses for queue-like things. (bsd3, data, deprecated, library)2010-10-18JamesCook
quick-schema40.0Slimmed down json schema language and validator (data, json, library, mit)2015-11-03benweitzman
quickset40.0Very fast and memory-compact query-only set and map structures (bsd3, data, data-structures, library)2012-11-14ErtugrulSoeylemez, esz
raft70.0Miscellaneous Haskell utilities for data structures and data manipulation. (data, library, mit)2019-08-14BrianBush
rakhana40.0Stream based PDF library (bsd3, data, library)2014-09-29YorickLaupa
ral360.0Random access lists (data, dependent-types, gpl, library, singletons)2019-12-13phadej
ral-lens1190.0Length-indexed random access lists: lens utilities. (data, dependent-types, gpl, lens, library, singletons)2019-12-13phadej
ral-optics20.0Length-indexed random access lists: optics utilities. (data, dependent-types, gpl, library, optics, singletons)2019-12-13phadej
random-extras80.0Additional functions for random values. (bsd3, data, library, math)2012-07-10AristidBreitkreuz
random-string320.0Generate a random base 16, 58, or 64 string (bsd3, data, library)2018-03-08ThomasDuBuisson
range440.0An efficient and versatile range library. (data, library, mit)2019-10-26RobertMassaioli, srijs
range-set-list690.0Memory efficient sets with ranges of elements. (data, library, mit)2019-08-03phadej
ranges (deprecated)200.0Ranges and various functions on them. (bsd3, data, deprecated, library)2011-09-01GeorgePollard
rank1dynamic150.0Like Data.Dynamic/Data.Typeable but with support for rank-1 polymorphic types (bsd3, data, library)2020-10-24EdskoDeVries, FacundoDominguez, MathieuBoespflug, TimWatson
rank2classes1090.0standard type constructor class hierarchy, only with methods of rank 2 types (bsd3, control, data, generics, library)2020-11-11MarioBlazevic
rcu130.0Read-Copy-Update for Haskell (bsd3, data, library, program)2019-05-02EdwardKmett, EricMertens, ryanglscott
rdf102.0Representation and Incremental Processing of RDF Data (data, library, mit)2020-07-28TravisWhitaker
record-aeson40.0Instances of "aeson" classes for the "record" types (data, json, library, mit, records)2015-11-06NikitaVolkov
record-encode (deprecated)50.0Generic encoding of records (bsd3, data, data-mining, data-science, deprecated, library, machine-learning)2019-01-23ocramz
records80.0A flexible record system (bsd3, data, library, records)2012-01-15WolfgangJeltsch
records-th30.0Template Haskell declarations for the records package (data, library, mit)2012-08-01SamAnklesaria
recursion-schemes-ix40.0Recursion schemes over indexed Functors (bsd3, data, library)2020-04-24SkyeSoss
red-black-record340.0Extensible records and variants indexed by a type-level Red-Black tree. (bsd3, data, library)2020-05-30DanielDiazCarrete
redis-resp120.0REdis Serialization Protocol (RESP) implementation. (data, library, mpl)2018-08-30ToralfWittner, romanb
reducers3430.0Semigroups, specialized containers and a general map/reduce framework (bsd3, data, library, math, numerical, semigroups)2018-07-03EdwardKmett, EricMertens, ryanglscott
reedsolomon120.0Reed-Solomon Erasure Coding in Haskell (data, library, mit)2017-01-13NicolasTrangez
ref50.0Generic Mutable Ref Abstraction Layer (bsd3, data, library)2013-03-31CarterSchonwald
ref-extras50.0Extra stuff for mutable references (bsd3, data, library)2020-09-05ejconlon
refcount20.0Container with element counts (data, library, mit)2014-06-08BenFoppa
reference40.0A class for references in Haskell (control, data, library, mit)2010-09-06MaciejPiechotka
refined672.25Refinement types with static and runtime checking (data, library, mit)2020-08-03NikitaVolkov, chessai
refined-http-api-data30.0http-api-data instances for refined types (data, library, mit)2019-11-06brandonhamilton
reflection6272.25Reifies arbitrary terms into types that can be reflected back into terms (bsd3, data, dependent-types, library, reflection)2020-05-16EdwardKmett, ryanglscott
reflection-extras40.0Utilities for the reflection package (bsd3, data, library)2013-12-31EdwardKmett, JonathanFischoff
reflection-without-remorse40.0Efficient free and operational monads. (bsd3, data, data-structures, library)2014-12-30AtzeVanDerPloeg
regex-easy30.0sugar for regex-pcre (bsd3, data, library)2014-03-05MatthiasFischmann
regex-type60.0Type-level regular expressions (bsd3, data, library)2016-04-01kcsongor
regex-wrapper20.0Types that can only be constructed if they match a regular expression (bsd3, data, library)2019-11-11lukec
regexp-tries50.0Regular Expressions on Tries. (bsd3, data, library)2012-02-08AndreasBaldeau
regular-xmlpickler (deprecated in favor of generic-xmlpickler)40.0Generic generation of HXT XmlPickler instances using Regular. (bsd3, data, deprecated, library, xml)2014-04-04AdamBergmark, ErikHesselink
rei42.0Process lists easily (data, mit, program)2016-12-04kerkomen
reify60.0Serialize data (data, library, program)2009-01-19GwernBranwen
reinterpret-cast560.0Memory reinterpretation casts for Float/Double and Word32/Word64 (data, library, mit)2014-04-30NiklasHambuechen
relapse70.0Sensible RLP encoding (data, library, mit)2017-03-21iostat
relative-date50.0Durations and generalized time parsing (bsd3, data, library)2010-04-02SamAnklesaria
relevant-time40.0humanised relevant time (bsd3, data, library)2019-05-11chessai, goolord
reord50.0Ad-hoc Ord instances (data, library, public-domain)2008-10-22JamesCook
reorderable50.0Define compound types that do not depend on member order. (data, library, type-system)2013-11-15AlexCole
repa-linear-algebra80.0HMatrix operations for Repa. (bsd3, data, library)2016-03-01mjmrotek
resource-pool3112.25A high-performance striped resource pooling implementation (bsd3, data, database, library, network)2014-12-16BasVanDijk, BryanOSullivan
resource-pool-catchio30.0Fork of resource-pool, with a MonadCatchIO constraint (bsd3, data, database, library, network)2012-03-08JurrienStutterheim
resourcet9140.0Deterministic allocation and freeing of scarce resources. (bsd3, conduit, data, library)2020-06-25MichaelSnoyman
resourcet-pool120.0A small library to convert a Pool into an Acquire (bsd3, conduit, data, database, library, network)2020-11-23brandonchinn178
restricted-workers50.0Running worker processes under system resource restrictions (bsd3, concurrency, data, library, system)2013-08-26DaniilFrumin
result50.0Encode success or at least one error (data, library, mit)2016-10-02srijs
reverse-arguments70.0Reverse the arguments of arbitrary functions. (bsd3, data, library)2016-03-25JonasScholl
reverse-geocoding40.0Simple reverse geocoding using OpenStreeMap (bsd3, data, library)2017-02-13jcristovao
riff370.0RIFF parser for Haskell (data, library, mit, program)2015-04-24RobertMassaioli
ring-buffer92.0A concurrent, mutable ring-buffer (bsd3, data, library)2017-10-07BenGamari
ring-buffers30.0mutable ring buffers with atomic updates in GHC Haskell (bsd3, data, library)2020-11-30chessai
ripple-federation40.0Utilities and types to work with the Ripple federation protocol (data, library)2014-12-29StephenWeber
rivers100.0Rivers are like Streams, but different. (bsd3, comonads, data, library, math)2011-12-04DrewDay
rng-utils90.0RNG within an IORef for convenient concurrent use (bsd3, data, library, random)2020-09-23DougBeardsley, MichaelXavier, OzgunAtaman
roc-cluster20.0ROC online clustering algorithm (bsd3, data, library)2017-05-17NCrashed
roles60.0Composable class-based roles (bsd3, data, library)2017-10-16mnoonan
rolling-queue120.0Bounded channel for STM that discards old entries when full (bsd3, data, library)2012-02-16JoeyAdams
rope-utf16-splay2220.0Ropes optimised for updating using UTF-16 code units and row/column pairs. (bsd3, data, language, library, text)2019-05-06OlleFredriksson
rose160.0rose trees (bsd3, data, library)2021-01-04chessai
rose-trees110.0Various trie implementations in Haskell (bsd3, data, library, tree)2020-03-07athanclark
rose-trie70.0Trees with polymorphic paths to nodes, combining properties of Rose Trees and Tries. (data, gpl, library)2017-03-27RaminHonary
rosebud40.0Common rose tree/forest functions (bsd3, data, library)2020-11-19jship
roundtrip-aeson30.0Un-/parse JSON with roundtrip invertible syntax definitions. (bsd3, data, library)2018-10-14ThomasSutton, ChristianMarie
route-planning50.0A library and utilities for creating a route (bsd3, data, library)2014-04-18TonyMorris
row-types1450.0Open Records and Variants (data, data-structures, library, mit)2020-09-12dwincort
rowrecord40.0Build records from lists of strings, as from CSV files. (bsd3, data, library, text)2010-09-27KeeganMcAllister
rset100.0Range set (data, library)2017-08-08lovasko
rstream30.0stream-fusion framework from vector (bsd3, data, data-structures, library)2018-11-01chessai
rtorrent-state30.0Parsing and manipulation of rtorrent state file contents (data, gpl, library)2014-08-17MateuszKowalczyk
ruby-marshal180.0Parse a subset of Ruby objects serialised with Marshal.dump. (data, library, mit)2020-05-21filib
ruin90.0Pliable records (bsd3, data, library, records)2016-08-07NicolasFrisby
run-haskell-module90.0Running newly generated Haskell source module. (bsd3, data, library, tools)2020-03-29MichalGajda
run-st310.0runST without boxing penalty (bsd3, data, library)2020-01-16andrewthad
runmany30.0Run multiple commands, interleaving output and errors (bsd3, data, nix, program, system)2018-04-26JohnWiegley
runmemo80.0A simple memoization helper library (bsd3, data, library)2013-11-28DanBurton
s-cargot220.0A flexible, extensible s-expression library. (bsd3, data, library)2018-03-02gdritter
s-cargot-letbind170.0Enables let-binding and let-expansion for s-cargot defined S-expressions. (data, library)2018-06-12KevinQuick
s-expression70.0simple general-purpose s-expressions (data, library, mit, program)2017-05-01sboo
safe-freeze30.0Support for safely freezing multiple arrays in the ST monad. (bsd3, data, library)2012-06-02ReinerPope
safe-globals50.0Safe top-level mutable variables which scope like ordinary values (bsd3, data, library)2011-12-21KeeganMcAllister
safe-length42.0Tired of accidentally calling length on tuples? Relief at last! (bsd3, data, library)2015-10-29JeremyShaw
safecopy1710.0Binary serialization with version control. (data, library, parsing, public-domain)2021-01-11AdamGundry, DavidFox, DavidHimmelstrup, DavidJohnson, JeremyShaw
safecopy-migrate (deprecated)70.0Making SafeCopy migrations easier (data, deprecated, library, public-domain)2018-08-19Artyom
safecopy-store50.0Binary serialization with version control. (data, library, parsing, public-domain)2017-12-21NCrashed
safeint90.0overflow-checked Int type (bsd3, data, library)2015-10-29AndresLoeh
scan-metadata (deprecated)30.0Metadata types for Albedo Scanners (data, deprecated, library, mit)2019-05-31arbornetworks
schedule-planner40.0Find the ideal lesson layout (convenience, data, lgpl, planning, program)2015-06-21justus
schema60.0Encoding-independent schemas for Haskell data types. (data, gpl, library)2020-03-27iphydf
schemas110.0schema guided serialization (bsd3, data, library)2020-04-28PepeIborra, adamse
schematic261.75JSON-biased spec and validation tool (bsd3, data, library)2021-01-15dredozubov
scientific6222.0Numbers represented using scientific notation (bsd3, data, library)2018-05-07BasVanDijk, BryanOSullivan
scientific-notation40.0Scientific notation intended for tokenization (bsd3, data, library)2020-05-01andrewthad
scythe30.0Fast CSV lexing on ByteString (bsd3, data, library, program)2018-09-19DavidJohnson
sec40.0Semantic Editor Combinators. (bsd3, combinators, data, library)2010-03-30SteffenSiering
secret-sharing110.0Information-theoretic secure secret sharing (cryptography, data, lgpl, library)2020-05-10PeterRobinson
securemem2340.0abstraction to an auto scrubbing and const time eq, memory chunk. (bsd3, data, library)2018-02-27VincentHanquez
semantic-source110.0Types and functionality for working with source code (data, library, mit)2020-08-26patrick_thomson, tclem, robrix, dcreager, aymannadeem, joshvera, maxbrunsfeld, rewinfrey
semi-iso70.0Weakened partial isomorphisms, reversible computations. (control, data, library, mit)2014-12-12pawel834
semialign4960.0Align and Zip type-classes from the common Semialign ancestor. (bsd3, data, library, these)2020-07-14phadej
semialign-extras20.0Extra functions for working with Semialigns (bsd3, data, library)2019-11-15qfpl, jack
semialign-indexed220.0SemialignWithIndex, i.e. izipWith and ialignWith (bsd3, data, library, these)2019-10-21phadej
semialign-optics20.0SemialignWithIndex, i.e. izipWith and ialignWith (bsd3, data, library, these)2019-10-21phadej
semibounded-lattices60.0A Haskell implementation of semibounded lattices (bsd3, data, library)2020-11-10xuhao
semigroupoids-syntax40.0RebindableSyntax using the semigroupoids package (bsd3, data, library)2014-11-01TonyMorris
semigroups7942.75Anything that associates (algebra, bsd3, data, data-structures, library, math)2019-08-27EdwardKmett, EricMertens, HerbertValerioRiedel, ryanglscott
semigroups-actions40.0Semigroups actions (algebra, bsd3, data, data-structures, library, math)2012-12-20PetrPudlak
semilattices250.0Semilattices (algebra, bsd3, data, data-structures, library, math)2019-10-03robrix
semiring-num202.0Basic semiring class and instances (data, library, mit)2019-11-23oisdk
semirings3172.0two monoids as one, in holy haskimony (algebra, bsd3, data, data-structures, library, math, mathematics, maths)2021-01-07chessai
semver1332.0Representation, manipulation, and de/serialisation of Semantic Versions. (data, library, mpl)2020-10-31BrendanHay
separated80.0A data type with elements separated by values (bsd3, data, library)2018-02-02TonyMorris, qfpl, GeorgeWilson
seqid80.0Sequence ID production and consumption (bsd3, data, library)2020-07-30wraithm, LukeHoersten
sequence120.0A type class for sequences and various sequence data structures. (bsd3, data, data-structures, library)2015-05-16AtzeVanDerPloeg
sequential-index60.0Sequential numbers that allow arbitrarily inserting numbers - for containers (bsd3, data, library)2013-01-29AristidBreitkreuz
serialise-uuid20.0Encode and decode UUID values in CBOR using uuid-types, cborg and serialise. (bsd3, data, library)2020-04-21RenzoCarbonara
serialize-instances40.0Instances for Serialize of cereal (data, library, mit)2016-10-28SimonHudon, bandali
set-extra100.0Functions that could be added to Data.Set. (bsd3, data, library)2018-05-22DavidFox
set-monad140.0Set monad (bsd3, data, library, monad)2018-10-11GeorgeGiorgidze
set-of40.0Sets of fixed size, with typelits (bsd3, data, library)2019-02-04fresheyeball
setoid (deprecated in favor of skeletal-set)90.0A Haskell implementation of setoid (bsd3, data, deprecated, library)2017-03-12PavloKerestey
setops110.0Uniform names (and Unicode operators) for set operations on data structures. (data, library, public-domain)2012-05-10eelis
sets110.0Ducktyped set interface for Haskell containers. (bsd3, data, library)2019-10-27athanclark
setters40.0Small (TH) library to declare setters for typical `record' data type fields. (bsd3, data, library)2010-11-23IlyaPortnov
settings50.0Runtime-editable program settings. (data, library, public-domain, user-interfaces)2016-01-27akrasner
sexpresso70.0A flexible library for parsing and printing S-expression (data, library)2020-04-07VincentArchambault
sext (deprecated in favor of static-text)100.0Lists, Texts, ByteStrings and Vectors with type-encoded length (bsd3, data, deprecated, library, text, type-system)2017-10-29DmitryDzhus
sgf80.0SGF (Smart Game Format) parser (bsd3, data, library)2014-06-24DanielWagner, tonicebrian, dbouamalay
sha170.0SHA-1 Hash (bsd3, data, library)2020-03-09andrewthad
shapely-data40.0Generics using @(,)@ and @Either@, with algebraic operations and typed conversions (bsd3, data, generics, library)2013-12-22BrandonSimmons
shortcircuit30.0Short-circuit values and expressions. (bsd3, control, data, library)2010-10-14AristidBreitkreuz
sieve60.0Sieve is an implementation of the Sieve abstract data type. (data, gpl, library)2013-01-15JohnSingleton
siggy-chardust60.0Rounding rationals to significant digits and decimal places. (data, library, math, mpl, numeric)2018-06-22philderbeast
sign80.0Arithmetic over signs and sets of signs (algebra, bsd3, data, library, math)2019-09-26MasahiroSakai
signable30.0Deterministic serialisation and signatures with proto-lens support (bsd3, cryptography, data, library)2020-09-24coingaming
signable-haskell-protoc40.0Deterministic serialisation and signatures with proto-lens support (bsd3, cryptography, data, program)2020-09-24coingaming
simple-atom90.0Atom (or symbol) datatype for fast comparision and sorting. (bsd3, compilers-interpreters, data, library, parsing)2011-04-06ThomasSchilling
simple-conduit50.0A simple streaming I/O library based on monadic folds (bsd3, conduit, data, library)2017-01-23JohnWiegley
simple-enumeration40.0Finite or countably infinite sequences of values. (bsd3, data, library)2020-06-25BrentYorgey
simple-index30.0Allows simple indexation on any data type (bsd3, data, library)2014-01-07HugoGomes
simple-money40.0Simple library to handle and interexchange money (data, library, public-domain)2017-01-20nbrk
simple-pipe130.0simple pipeline library like conduit (bsd3, data, library)2015-09-29YoshikuniJujo
simple-rope40.0Memory-efficient strings with concatenation and splitting. (bsd3, data, library)2011-06-24EugeneKirpichov
simplistic-generics20.0Generic programming without too many type classes (bsd3, data, library)2020-05-02AlejandroSerrano
simtreelo60.0Load data organized in a tree. (data, gpl, library)2018-10-23mgmillani
single-tuple30.0a class for single tuple implementations (apache, data, library)2020-05-25kakkun61
singlethongs50.0Like singletons, but much smaller. (bsd3, data, library)2020-04-19RenzoCarbonara
singleton-dict30.0Typelevel balanced search trees via a singletonized Data.Map (bsd3, data, dependent-types, library)2017-06-09ArieMiddelkoop
singleton-nats180.0Unary natural numbers relying on the singletons infrastructure. (bsd3, data, dependent-types, library)2020-04-11AndrasKovacs, ryanglscott
singleton-typelits130.0Singletons and induction over GHC TypeLits (bsd3, data, library)2018-07-11mniip
sink (deprecated)50.0An alternative to lazy I/O that doesn't conflate execution with evaluation (control, data, deprecated, library, mit, system)2011-08-27JakeMcArthur
siphash (deprecated in favor of memory)100.0siphash: a fast short input PRF (bsd3, cryptography, data, deprecated, library)2012-12-14VincentHanquez
siren-json100.0Siren Tools for Haskell (data, library, mit)2019-02-18alunduil
size-based470.0Sized functors, for size-based enumerations (bsd3, data, library)2018-10-19JonasDuregard
sized582.0Sized sequence data-types (bsd3, data, library)2021-01-17HiromiIshii
sized-grid72.0Multidimensional grids with sized specified at compile time (data, library, mit)2019-09-13edwardwas
sized-vector (deprecated in favor of sized)70.0Size-parameterized vector types and functions. (bsd3, data, deprecated, library)2016-07-27HiromiIshii
skeletal-set80.0Skeletal set - a set with equivalence relation different from equality (bsd3, data, library)2018-04-24PavloKerestey
skip-list80.0An implementation of pure skip lists (data, library, mit)2017-07-22gmalecha
sliceofpy52.0Python-ish slicing traversals for Haskell. (bsd3, data, lenses, library, program)2019-08-23lgastako
slotmap30.0Pure Haskell slotmap implementation over ST or IO. (bsd3, data, library)2018-09-17HarpoRoeder
small-bytearray-builder20.0Serialize to bytes (bsd3, data, library)2020-02-27andrewthad
smallarray50.0low-level unboxed arrays, with minimal features. (bsd3, data, library)2012-06-15AntoineLatter
smallstring30.0A Unicode text type, optimized for low memory overhead (bsd3, data, library)2012-06-15AntoineLatter
smaoin60.0Utilities for the Smaoin semantic information model. (data, library, public-domain)2015-06-18akrasner
smash180.0Combinators for Maybe types (bsd3, data, library)2020-04-07topos
smash-aeson20.0Aeson support for the smash library (bsd3, data, library)2020-04-07topos
smash-lens40.0Optics for the `smash` library (bsd3, data, library)2020-09-17topos
smash-microlens20.0Optics for the `smash` library (bsd3, data, library)2020-04-07topos
smash-optics20.0Optics for the `smash` library using `optics-core` (bsd3, data, library)2020-09-17topos
smith20.0Parse arrays of tokens (bsd3, data, library)2020-01-20andrewthad
smoothie140.0Smooth curves via several interpolation modes (bsd3, data, library)2020-05-31DimitriSabadie
snowflake40.0A loose port of Twitter Snowflake to Haskell. Generates arbitrary precision, unique, time-sortable identifiers. (apache, data, library)2015-03-17edofic
some2040.0Existential type: Some (bsd3, data, dependent-types, library)2021-01-09RyanTrinkle, phadej
sop-core4582.0True Sums of Products (bsd3, data, library)2020-03-29AndresLoeh
sorted40.0Efficient, type-safe sorted sequences (data, library, mit)2013-11-15JosephAbrahamson
sorted-list1960.0Type-enforced sorted lists and related functions. (bsd3, data, library)2018-04-25DanielDiaz
sorting40.0Utils for sorting. (bsd3, data, library)2015-04-26joneshf
spacepart40.0Space partition data structures. Currently only a QuadTree. (bsd3, data, library)2009-02-16CoreyOConnor
sparse110.0A playground of sparse linear algebra primitives using Morton ordering (bsd3, data, library, vector)2015-07-03EdwardKmett, HansHoglund
sparse-tensor50.0typesafe tensor algebra library (algebra, data, library, math, mit)2020-06-19nalex, TobiReinhart
spdx600.0SPDX license expression language, Extras (bsd3, data, library)2020-03-27phadej
spdx-license180.0SPDX license templates (bsd3, data, library)2020-12-22Poscat
special-keys30.0Simple data types that help me here and there. (bsd3, data, library)2013-09-01HugoGomes
splaytree60.0Provides an annotated splay tree (bsd3, data, library)2013-04-20JohnLato
split-morphism42.0Split Epimorphisms and Monomorphisms (bsd3, data, generics, lenses, library)2019-09-10gvolpe
spreadsheet250.0Read and write spreadsheets from and to CSV files in a lazy way (bsd3, data, library, text)2018-09-02HenningThielemann
srcloc570.0Data types for managing source code locations. (bsd3, data, library)2018-03-30GeoffreyMainland
srec40.0Parsing and processing s-records. (bsd3, data, embedded, library)2011-08-27TomHawkins
sstable50.0SSTables in Haskell (bsd3, data, library, program)2010-07-31MariusEriksen
st240.0shared heap regions between local mutable state threads (bsd3, data, library)2018-11-03chessai
stable-memo70.0Memoization based on argument identity (data, library, mit)2015-07-12JakeMcArthur
stable-tree60.0Trees whose branches are resistant to change (bsd3, data, library, program)2015-03-14tsuraan
stack-prism50.0Stack prisms (bsd3, data, library)2018-06-16MartijnVanSteenbergen, SjoerdVisscher
stackage-types (deprecated in favor of stackage-curator)40.0Shared data types between various Stackage packages (data, deprecated, library, mit)2016-01-20MichaelSnoyman
star (deprecated in favor of semirings)40.0*-semirings (bsd3, data, deprecated, library)2017-12-31chessai
state70.0Data.State (data, library)2009-10-19EvgenyJukov, MauricioAntunes
state-codes80.0ISO 3166-2:US state codes and i18n names (data, library, mit)2017-10-17acamino
state-record (deprecated in favor of lens)50.0Better records for State monad states (data, deprecated, library)2011-04-17KarlVoelker
stateref480.0Abstraction for things that work like IORef. (data, public-domain)2009-11-19JamesCook
static-tensor70.0Tensors of statically known size (bsd3, data, library)2017-12-16vagarenko
static-text102.0Lists, Texts, ByteStrings and Vectors of statically known length (bsd3, data, library, text, type-system)2020-06-03DmitryDzhus
std20.0TBA (bsd3, data, library, prelude)2019-06-27chessai
stdata50.0Structure Data Library (bsd3, data, library)2011-06-22DavidDarais
stdf90.0Parse Structured Test Data Format (STDF) (data, gpl, library, program)2014-10-13m
stdio52.25A simple and high performance IO toolkit for Haskell (bsd3, data, library)2019-05-15winterland
stm-linkedlist110.0Mutable, doubly linked lists for STM (bsd3, data, library)2011-10-20JoeyAdams
stm-queue40.0An implementation of a real-time concurrent queue (data, library, mit)2020-10-17sgschlesinger
stm-sbchan50.0Bounded channel for STM where item sizes can vary (bsd3, data, library)2012-07-31JoeyAdams
stm-tlist30.0Mutable, singly-linked list in STM (bsd3, data, library)2012-02-22JoeyAdams
storable50.0Storable type class for variable-sized data (bsd3, data, foreign, library)2009-03-05TomasJanousek
storable-complex1612.0Storable instance for Complex (bsd3, data, library)2018-11-05CarterSchonwald, JedBrown
storable-endian290.0Storable instances with endianness (bsd3, data, library)2016-12-16EugeneKirpichov
storable-record2010.0Elegant definition of Storable instances for records (bsd3, data, foreign, library)2020-03-21HenningThielemann
storable-tuple1770.0Storable instance for pairs and triples (bsd3, data, foreign, library)2017-10-03HenningThielemann
storablevector770.0Fast, packed, strict storable arrays with a list interface like ByteString (bsd3, data, library)2020-06-24HenningThielemann
storablevector-carray40.0Conversion between storablevector and carray (bsd3, data, library)2012-07-23HenningThielemann
storablevector-streamfusion50.0Conversion between storablevector and stream-fusion lists with fusion (bsd3, data, library)2009-04-24HenningThielemann
store1920.0Fast binary serialization (data, library, mit, serialization)2020-12-18MichaelSloan, MichaelSnoyman, borsboom, fpcomplete, philipp
store-core1600.0Fast and lightweight binary serialization (data, library, mit, serialization)2020-11-29MichaelSloan, MichaelSnoyman, borsboom, fpcomplete, philipp
store-streaming60.0Streaming interfaces for `store` (data, library, mit, serialization)2020-09-01MichaelSloan
stream30.0Initial project template from stack (data, library, mit)2016-04-20MichaelSnoyman
stream-fusion200.0Faster Haskell lists using stream fusion (bsd3, data, library)2013-01-12DonaldStewart, KidoTakahiro
streaming4092.5an elementary streaming prelude and general stream type. (bsd3, data, library, pipes, streaming)2019-09-24MichaelThompson, andrewthad, chessai
streaming-bracketed130.0A resource management decorator for "streaming". (data, library, mit, streaming)2020-06-15DanielDiazCarrete
streaming-bytestring5992.25Fast, effectful byte streams. (bsd3, data, library, pipes, streaming)2020-10-26IvanMiljenovic, fosskers, andrewthad
streaming-cassava290.0Cassava support for the streaming ecosystem (data, library, mit, streaming)2018-01-23IvanMiljenovic
streaming-commons8672.0Common lower-level functions needed by various streaming data libraries (data, library, mit)2020-07-20MichaelSnoyman
streaming-concurrency120.0Concurrency support for the streaming ecosystem (data, library, mit, streaming)2019-05-13IvanMiljenovic
streaming-conduit170.0Bidirectional support between the streaming and conduit libraries (data, library, mit, streaming)2018-02-11IvanMiljenovic
streaming-fft30.0online streaming fft (bsd3, data, library)2018-10-24chessai
streaming-process70.0Streaming support for running system process (data, library, mit, streaming)2018-05-23IvanMiljenovic
streaming-sort40.0Sorting streams (data, library, mit, streaming)2018-03-23IvanMiljenovic
streaming-utils190.0http, attoparsec, pipes and other utilities for the streaming libraries (bsd3, data, library, pipes, streaming)2019-02-14OliverCharles, MichaelThompson, andrewthad, chessai
streaming-with80.0with/bracket-style idioms for use with streaming (data, library, mit, streaming)2018-05-23IvanMiljenovic
strict9410.0Strict data types and String IO. (bsd3, data, library, system)2020-12-06DonaldStewart, RomanLeshchinskiy, phadej, infinity0
strict-base310.0Strict versions of base data types. (bsd3, data, library, system)2017-03-18minad
strict-base-types (deprecated in favor of strict, aeson, quickcheck-instances, strict-lens)112.0Strict variants of the types provided in base. (bsd3, data, deprecated, library)2020-08-07BasVanDijk, SimonMeier, phadej
strict-data50.0A collection of commonly used strict data structures (bsd3, data, library)2017-08-06AlexanderThiemann
strict-lens60.0Lenses for types in strict package (bsd3, data, lenses, library)2020-10-04phadej, infinity0
strict-optics20.0Optics for types in strict package (bsd3, data, library, optics)2020-10-04phadej
strict-tuple130.0Strict tuples (bsd3, data, library)2020-11-11mitchellwrosen, topos
strict-tuple-lens60.0Optics for the `strict-tuple` library (bsd3, data, library)2020-05-14topos
string-class110.0String class library (bsd3, data, library, text)2018-02-13ByronJohnson, k_bx
string-combinators60.0Polymorphic functions to build and combine stringlike values (bsd3, data, library)2014-06-13BasVanDijk
string-conv3631.75Standardized conversion between string types (bsd3, data, library, string, text)2016-06-22DougBeardsley, MichaelXavier, OzgunAtaman
string-conversions2862.5Simplifies dealing with different types for strings (bsd3, data, library)2016-12-30SoenkeHahn
string-interpolate982.25Haskell string/text/bytestring interpolation that just works (bsd3, data, library, text)2020-10-01williamyaoh
string-qq1530.0QuasiQuoter for non-interpolated strings, texts and bytestrings. (data, library, public-domain)2019-09-24AudreyTang
string-quote40.0QuasiQuoter for non-interpolated strings, texts and bytestrings. (bsd3, data, library)2011-03-29AudreyTang
string-similarity40.0longest common substring (bsd3, data, library)2013-07-21MarkWotton
string-typelits50.0Type-level Chars and Strings, with decidable equality. (bsd3, data, library)2016-01-27KyleCarter
stringable (deprecated)330.0A Stringable type class, in the spirit of Foldable and Traversable (bytestring, data, deprecated, library, mit, text)2014-05-02JohnWiegley, KetilMalde
stringprep340.0Implements the "StringPrep" algorithm (bsd3, data, library)2014-01-06GeorgePollard
stringtable-atom60.0Memoize Strings as Atoms for fast comparison and sorting, with maps and sets (bsd3, data, library, pugs)2014-05-17AudreyTang, JeffShaw
strptime100.0Efficient parsing of LocalTime using a binding to C's strptime, with some extra features (i.e. fractional seconds) (bsd3, data, library, parsing, system)2012-12-18EugeneKirpichov
structs120.0Strict GC'd imperative object-oriented programming with cheap pointers. (bsd3, data, library)2020-10-02EdwardKmett, EricMertens, ryanglscott
structured440.0Structure (hash) of your data types (bsd3, data, library)2020-05-16phadej
structures72.0"Advanced" Data Structures (bsd3, data, library, structures)2014-07-28EdwardKmett
subG160.0Some extension to the Foldable and Monoid classes. (data, development, library, mit)2020-11-19OleksandrZhabenko
subG-instances20.0Additional instances for the InsertLeft class from subG package. (data, development, library, mit)2020-11-19OleksandrZhabenko
subcategories40.0Subcategories induced by class constraints (bsd3, data, library)2020-09-06HiromiIshii
success (deprecated in favor of transformers, validation-selective, validation)472.0A version of Either specialised for encoding of success or failure (data, deprecated, failure, library, mit)2016-02-07NikitaVolkov
suffixarray70.0n log n implementation of suffix array. (data, gpl, library, program)2012-06-17DanielDeKok, VictorDenisov
suffixtree60.0Efficient, lazy suffix tree implementation (bsd3, data, data-structures, library)2011-10-17BryanOSullivan
suitable30.0Abstract over the constraints on the parameters to type constructors (bsd3, data, library)2011-03-15GaneshSittampalam
summer70.0An implementation of extensible products and sums (data, library, mit)2020-08-10sgschlesinger
swagger90.0Implementation of swagger data model (data, library)2016-09-18ToralfWittner
swiss-ephemeris180.0Haskell bindings for the Swiss Ephemeris C library (astrology, data, gpl, library)2020-11-15lfborjas
syb-with-class790.0Scrap Your Boilerplate With Class (bsd3, data, library)2020-05-18AndreaVezzosi, DavidHimmelstrup, IanLynagh, JeremyShaw
syb-with-class-instances-text40.0Scrap Your Boilerplate With Class Text instance (bsd3, data, library)2010-04-02JeremyShaw
symbiote80.0Data serialization, communication, and operation verification implementation (bsd3, data, library, testing)2020-02-12athanclark
symbol450.0A 'Symbol' type for fast symbol comparison. (bsd3, data, library)2014-10-09GeoffreyMainland
syntax90.0Reversible parsing and pretty-printing. (data, library, mit)2014-12-12pawel834
syntax-attoparsec40.0Syntax instances for Attoparsec. (data, library, mit)2014-12-12pawel834
syntax-example40.0Example application using syntax, a library for abstract syntax descriptions. (data, mit, program)2014-12-12pawel834
syntax-example-json30.0Example JSON parser/pretty-printer. (data, mit, program)2014-12-12pawel834
syntax-pretty (deprecated in favor of syntax-printer)30.0Syntax instance for pretty, the pretty printing library. (data, deprecated, library, mit)2014-11-23pawel834
syntax-printer40.0Text and ByteString printers for 'syntax'. (data, library, mit)2014-12-12pawel834
t-regex80.0Matchers and grammars using tree regular expressions (bsd3, data, library)2015-02-17AlejandroSerrano
tables (deprecated)62.0In-memory storage with multiple keys using lenses and traversals (bsd3, data, deprecated, lenses, library)2015-01-12EdwardKmett, TimDixon
tagged10002.0Haskell 98 phantom types to avoid unsafely passing dummy arguments (bsd3, data, library, phantom-types)2020-12-28EdwardKmett, ryanglscott
tagged-binary80.0Provides tools for serializing data tagged with type information. (data, library, mit, serialization)2017-07-31jle
tagged-list30.0Lists tagged with a type-level natural number representing their length. (bsd3, data, library)2011-10-21GregoryCrosswhite
tagged-transformer40.0Monad transformer carrying an extra phantom type tag (bsd3, data, library, phantom-types)2018-04-24EdwardKmett, MatveyAksenov, ryanglscott
tagging40.0Library for tagging data (bsd3, data, library)2010-11-25JosephRe
tai6450.0Tai64 Labels for Haskell (data, library, mpl)2016-06-21KimAltintop
taskwarrior90.0Types and aeson instances for taskwarrior tasks (agpl, data, library, taskwarrior)2020-05-23maralorn
tbox50.0Transactional variables and data structures with IO hooks (concurrency, data, library)2010-04-02PeterRobinson
telega50.0Telegram Bot API binding (control, data, library, mit)2020-01-30iokasimovmt
template-default50.0declaring Default instances just got even easier (bsd3, data, library)2016-06-03DanielWagner, GregoryCollins
template-haskell-optics30.0Optics for template-haskell types (bsd3, data, lenses, library, optics)2020-08-29AdamGundry, AndresLoeh, phadej, arybczak
tensor100.0A completely type-safe library for linear algebra (data, gpl, library, math)2013-10-19NicolaSquartini
terminal-text60.0Text data type for styled terminal output, including all standard ANSI effects (bold, italic, blinking) and ANSI / 256 / truecolor colors support for Unix and Windows (whenever possible). (apache, data, library)2018-12-18danilo2, iamrecursion
text9212.75An efficient packed Unicode text type. (bsd2, bsd3, data, library, text)2021-01-19BryanOSullivan, HerbertValerioRiedel
text-ansi360.0Text styling for ANSI terminals. (bsd3, data, library)2021-01-07mitchellwrosen
text-binary1920.0Binary instances for text types (bsd2, data, library)2016-09-29JakubWaszczuk
text-containers70.0Memory-efficient string-indexed container types. (data, data-structures, gpl, library)2017-10-13HerbertValerioRiedel
text-conversions5672.5Safe conversions between textual types (data, library)2020-09-30jxv, lexi_lambda
text-icu2112.0Bindings to the ICU library (bsd3, data, library, text)2015-01-09BryanOSullivan
text-icu-normalized70.0Dealing with Strict Text in NFC normalization. (data, gpl, library, text)2017-04-30misandrist
text-locale-encoding40.0Encode and decode Text to/from ByteString using TextEncoding (bsd3, codec, data, library, text)2013-09-10MikhailKuddah
text-manipulate1950.0Case conversion, word boundary manipulation, and textual subjugation. (data, library, mpl, text)2020-11-28BrendanHay
text-normal50.0Unicode-normalized text (data, library, mit)2014-04-22JoelTaylor
text-plus60.0Utils for text (bsd3, data, library)2017-08-06AlexanderThiemann
text-position70.0Handling positions in text and position-tagging it. (data, library, public-domain, text)2015-04-28akrasner
text-regex-replace90.0Easy replacement when using text-icu regexes. (apache, data, library, text)2018-05-25EricRochester
text-short4152.25Memory-efficient representation of Unicode text strings (bsd3, data, library)2019-07-20HerbertValerioRiedel
text-stream-decode (deprecated in favor of streaming-commons)170.0Streaming decoding functions for UTF encodings. (deprecated) (data, deprecated, library, mit, text)2014-03-26MichaelSnoyman
text-time80.0Library for Time parsing from Text into UTCTime (bsd3, data, library)2020-06-27klangner
text-trie70.0An efficient finite map from Text to values, based on bytestring-trie. (bsd3, data, data-structures, library)2019-04-11lambdamichael
text-utf750.0UTF-7 encoding/decoding for Data.Text (bsd3, data, library)2014-12-08DanielWright
text-utf840.0An efficient packed UTF-8 backed Unicode text type. (bsd2, data, library, text)2018-05-14HerbertValerioRiedel
text170.0Non-empty values of `Data.Text`. (bsd3, data, library)2018-09-25TonyMorris, qfpl, GeorgeWilson
th-format90.0Template Haskell based support for format strings (bsd3, data, library)2019-11-15mtesseract
these7492.5An either-or-both data type. (bsd3, data, library, these)2020-07-14JohnWiegley, phadej, cmccann
these-lens200.0Lenses for These (bsd3, data, lens, library, these)2020-10-04phadej
these-optics30.0Optics for These (bsd3, data, library, optics, these)2020-10-04phadej
these-skinny482.0A fork of the 'these' package without the dependency bloat. (bsd3, data, library)2018-06-28chessai
thorn60.0Datatype Manipulation with Template Haskell (bsd3, data, generics, library)2013-11-23Kinokkory
through-text40.0Convert textual types through Text without needing O(n^2) instances. (bsd3, data, library)2015-05-07AdamBergmark
thyme812.0A faster time library (bsd3, data, library, system)2014-11-27FumiakiKinoshita, LiyangHu
tickle60.0A port of @Data.Binary@ (bsd3, data, library)2018-01-03TonyMorris, qfpl, GeorgeWilson
tiempo60.0Specify time intervals in different units (secs, mins, hours, etc.) (data, library, mit, time)2015-09-01RomanGonzalez
tight-apply40.0Tightly binding infix function application (data, library, public-domain)2015-09-07Shockk
tile50.0Slippy map tile functionality. (bsd3, data, library)2017-10-26jmc41493
time-interval120.0Use a time unit class, but hold a concrete time type. (data, library, public-domain)2016-05-30akrasner
time-lens60.0Lens-based interface to Data.Time data structures (bsd3, data, library)2018-01-04RomanCheplyaka
time-patterns50.0Patterns for recurring events (bsd3, data, library, time)2018-07-02jfmueller
time-series40.0Time series analysis. (data, gpl, library, program)2013-11-08AtsuroHoshino
time-series-lib (deprecated in favor of timeseries)30.0Library for Time Series processing (bsd3, data, deprecated, library)2016-12-10klangner
time-units3640.0A basic library for defining units of time as types. (bsd3, data, library)2011-03-07AdamWick
timelike60.0Type classes for types representing time (data, library, system)2016-04-07esz
timeparsers40.0Attoparsec parsers for various Date/Time formats. (bsd3, data, library)2012-11-07NathanHunter, PhilipWeaver
timer-wheel80.0A timer wheel (bsd3, data, library)2020-06-19mitchellwrosen
timeseries60.0Library for Time Series processing (bsd3, data, library)2016-12-28klangner
timezone-detect60.0Haskell bindings for the zone-detect C library; plus tz-aware utils. (data, foreign, gpl, library, time)2020-09-03lfborjas
timezone-olson1670.0A pure Haskell parser and renderer for binary Olson timezone files (bsd3, data, library)2020-04-18YitzGale
timezone-olson-th60.0Load TimeZoneSeries from an Olson file at compile time. (bsd3, data, library)2020-03-03petterb
timezone-series1500.0Enhanced timezone handling for Data.Time (bsd3, data, library)2018-03-14YitzGale
tiphys60.0Navigating and editing JSON data (bsd3, data, library)2016-01-11llhotka
tmpl80.0simple executable for templating (data, gpl, program)2014-09-25michelk
tn100.0A simple daily journal program (data, library, program, text, utility)2016-05-17pharpend
to-string-class (deprecated)40.0Converting string-like types to Strings. (bsd3, data, deprecated, library)2009-09-22BasVanDijk
to-string-instances (deprecated)50.0Instances for the ToString class. (bsd3, data, deprecated, library)2009-09-22BasVanDijk
tomato-rubato-openal60.0Easy to use library for audio programming. (bsd3, data, library)2015-10-19HeinrichApfelmus
tomlcheck110.0Command-line tool to check syntax of TOML files (bsd3, data, program, toml)2019-04-27vmchale
topograph710.0Directed acyclic graphs. (bsd3, data, graph, library)2020-03-27phadej
tostring60.0The ToString class (bsd3, data, library)2015-01-26AdamBergmark, ErikHesselink
total-map90.0Finitely represented total maps (bsd3, data, library)2019-11-23ConalElliott
total-maps40.0Dense and sparse total maps. (containers, data, data-structures, library, mit)2015-11-19pawel834
transaction90.0Monadic representation of transactions. (data, library, mit)2018-03-28arowM
traverse-with-class580.0Generic applicative traversals (data, library, mit)2019-11-08AdamBergmark, RomanCheplyaka, SjoerdVisscher
tree-diff3752.25Diffing of (expression) trees. (data, gpl, library, testing)2019-05-29phadej
tree-render-text50.0Configurable text rendering of trees. (bsd3, data, library)2020-01-06ThomasEding
tree-traversals70.0Functions and newtype wrappers for traversing Trees (data, library)2019-12-11NoahEasterly
tree-view100.0Render trees as foldable HTML and Unicode art (bsd3, data, library)2016-10-05EmilAxelsson
treefold30.0Provides folds which try to combine elements in a balanced way. (data, library, mit)2017-10-04oisdk
trial230.0Trial Data Structure (data, data-structure, library, mpl)2020-06-21shersh, vrom911
trial-tomland230.0Trial helper functions for tomland (data, data-structure, library, mpl)2020-06-21shersh, vrom911
tries60.0Various trie implementations in Haskell (bsd3, data, library, tree)2020-03-07athanclark
true-name1230.0Template Haskell hack to violate module abstractions (bsd3, data, library, unsafe)2017-08-24LiyangHu
truthful40.0Typeclass for truthfulness of values (data, library, public-domain)2015-09-07Shockk
tskiplist60.0A Skip List Implementation in Software Transactional Memory (STM) (concurrency, data, library)2019-09-24PeterRobinson
ttask40.0This is task management tool for yourself, that inspired by scrum. (bsd3, data, library, program)2016-06-10outoftune
ttc130.0Textual Type Classes (data, library, mit, text)2020-11-03TravisCardwell
ttl-hashtables70.0Extends hashtables so that entries added can be expired after a TTL (bsd3, data, library)2019-09-23erick
tup-functor40.0Homogeneous tuples (bsd3, data, library, program)2014-10-31BalazsKomuves
tuple490.0Various functions on tuples (bsd3, data, library)2014-09-07LennartAugustsson
tuple-gen50.0Enum instances for tuples where the digits increase with the same speed (bsd3, data, library)2012-03-11TillmannVogt
tuple-generic (deprecated)30.0Generic operations on tuples (data, deprecated, library, public-domain)2015-11-25Artyom
tuple-hlist40.0Functions to convert between tuples and HLists. (data, library)2015-11-16NicolasDudebout
tuple-morph30.0Morph between tuples, or convert them from and to HLists. (data, library, mit)2014-11-22pawel834
tuple-ops70.0various operations on n-ary tuples via GHC.Generics (bsd3, data, library)2019-09-17JiasenWu
tuple-sop70.0functions on n-ary tuples using generics-sop (data, gpl, library)2018-06-24ferdinandvw
tuple-th370.0Generate (non-recursive) utility functions for tuples of statically known size (bsd3, data, library, template-haskell)2015-06-28DanielSchuessler
tupleinstances40.0Functor, Applicative and Monad for n-ary tuples. (bsd3, data, library)2010-03-16DiegoEcheverri
tuples400.0Small monomorphic tuples (bsd3, data, library)2019-08-29andrewthad
tuples-homogenous-h98160.0Wrappers for n-ary tuples with Traversable and Applicative/Monad instances. (bsd3, data, library)2013-09-09PetrPudlak
txt (deprecated in favor of text-utf8)71.25Text (bsd3, data, deprecated, library, text)2019-03-15
ty90.0Typed type representations and equality proofs (bsd3, data, library)2016-02-25ConalElliott
type40.0Dynamic casting library with support for arbitrary rank type kinds. (bsd3, data)2010-02-09TopiKarvonen
type-aligned90.0Various type-aligned sequence data structures. (bsd3, data, data-structures, library)2014-12-30AtzeVanDerPloeg
type-combinators60.0A collection of data types for type-level programming (bsd3, data, library)2016-06-15KyleCarter
type-combinators-quote50.0Quasiquoters for the 'type-combinators' package. (bsd3, data, library)2016-01-26KyleCarter
type-combinators-singletons50.0Interop between /type-combinators/ and /singletons/. (bsd3, data, library)2018-01-21jle
type-equality3640.0Data.Type.Equality compat package (bsd3, data, dependent-types, library)2019-09-06ErikHesselink, phadej, ryanglscott
type-equality-check40.0Type equality check (bsd3, data, library)2016-07-21GwernBranwen, WolfgangJeltsch
type-iso60.0Typeclasses for injective relations and isomorphisms between types. (apache, cast, data, library, types)2019-06-25jtapolczai, jtapolczai2
type-level90.0Type-level programming library (bsd3, data, library)2016-07-08AlfonsoAcosta, HoseinAttarzadeh, LennartAugustsson, ugeorge, ingo
type-level-integers40.0Provides integers lifted to the type level (bsd3, data, library)2017-04-06mtesseract
type-level-kv-list40.0A module for hash map like object with type level keys. (data, library, mit)2016-11-06arowM
type-level-natural-number260.0Simple type level natural numbers (bsd3, data, library, type-system)2014-03-30GregoryCrosswhite
type-level-natural-number-induction40.0High-level combinators for performing inductive operations. (bsd3, data, library, type-system)2012-07-23GregoryCrosswhite
type-level-natural-number-operations40.0Basic operations on type-level natural numbers. (bsd3, data, library, type-system)2010-10-14GregoryCrosswhite
type-level-tf30.0Type-level programming library (type families) (bsd3, data, library)2011-10-29CoreyOConnor
type-list (deprecated)62.0Operations on type-level lists and tuples. (bsd3, data, deprecated, library)2016-06-20mjmrotek
type-map90.0Type-indexed maps (data, library, mit)2019-01-03lyxia
type-structure50.0Type structure analysis (data, library, mit)2014-04-04NikitaVolkov
type-unary140.0Type-level and typed unary natural numbers, inequality proofs, vectors (bsd3, data, library)2018-04-21ConalElliott
typeable-th30.0Automatic deriving of TypeableN instances with Template Haskell (bsd3, data, library)2014-10-21BennoFuenfstueck
typed-digits50.0Digits, indexed by their base at the type level (data, library, mit)2019-12-12arran
typed-duration50.0Thread delay and timeout functions with typed arguments (bsd3, concurrency, data, library)2017-07-13OmerAgacan
typed-encoding1800.0Type safe string transformations (bsd3, data, library, text)2021-01-09rpeszek
typed-encoding-encoding30.0Bridge between encoding and typed-encoding packages (bsd3, data, library, text)2020-06-01rpeszek
typed-streams70.0A stream based replacement for lists (data, library, mit)2017-03-18clinton
typed-uuid50.0Phantom-Typed version of UUID (data, library, mit)2020-05-10Norfair
typelevel90.0Useful type level operations (type families and related operators). (apache, data, library)2018-12-18danilo2, iamrecursion
typelevel-tensor40.0Tensors whose ranks and dimensions type-inferred and type-checked. (bsd3, data, library)2013-02-10TakayukiMuranushi
typelits-witnesses262.25Existential witnesses, singletons, and classes for operations on GHC TypeLits (data, library, mit)2019-06-21jle
typenums1250.0Type level numbers using existing Nat functionality (bsd3, data, library)2018-10-24AdituV
typeparams70.0Lens-like interface for type level parameters; allows unboxed unboxed vectors and supercompilation (bsd3, configuration, data, dependent-types, library, optimization)2015-01-26MikeIzbicki
typerep-map3712.5Efficient implementation of a dependent map with types as keys (data, data-structures, library, mpl, types)2020-04-18shersh, vrom911
typesafe-endian40.0Enforce endianness with types (bsd3, data, library)2013-07-20JohnEricson
typical60.0Type level numbers, vectors, list. This lib needs to be extended. (data, library)2009-02-26RickKaudewitz
tz642.0Efficient time zone handling (apache, data, library)2020-10-22GergelyRisko, MihalyBarasz
tzdata812.0Time zone database (as files and as a module) (apache, data, library)2020-10-22MihalyBarasz
ucd (deprecated)90.0Unicode Character Database — Predicates on characters specified by Unicode (bsd3, data, deprecated, library, text)2020-07-15
udcode60.0Does a set of code words form a uniquely decodable code? (bsd3, data, library)2009-01-06WaltBaety
udp-conduit72.0Simple fire-and-forget conduit UDP wrappers (conduit, data, library)2016-10-21kqr
uglymemo710.0A simple (but internally ugly) memoization function. (data, library, public-domain)2011-10-04LennartAugustsson
uid40.0Simple unique identifier datatype, serializable and encodable as base32 (data, library, mit)2013-08-11PhilHargett
ulid100.0Implementation of ULID - Universally Unique Lexicographically Sortable Identifier (bsd3, codec, data, database, library, program)2020-04-04steven777400, adrian
unamb100.0Unambiguous choice (bsd3, concurrency, data, library, other)2018-03-16ConalElliott
unamb-custom30.0Functional concurrency with unamb using a custom scheduler. (bsd3, concurrency, data, library)2008-12-24LukePalmer
unboxed20.0All the standard sum types but strict and unboxed as possible (bsd3, data, library)2019-01-01CarterSchonwald
unboxed-containers40.0Self-optimizing unboxed sets using view patterns and data families (bsd3, data, library)2012-05-10EdwardKmett
unboxed-ref310.0Fast unboxed references for ST and IO monad (bsd3, data, library)2017-07-17winterland, terrorjack
unboxed-references30.0A library for reference cells backed by unboxed-vectors (bsd3, data, library, program)2019-12-16callanmcgill
unboxing-vector90.0A newtype-friendly variant of unboxed vectors (bsd3, data, data-structures, library)2020-09-27aratamizuki
unfix-binders40.0Unfixing and recursion schemes for data types with binders (bsd3, data, library)2018-10-11aspiwack
ungadtagger50.0Abstract GADTs from typelevel tags (bsd3, data, library)2012-09-30AndriyPolishchuk
unicode-transforms5770.0Unicode normalization (bsd3, data, library, text, unicode)2020-10-12Bodigrim, harendra, adithyaov
uniform-pair40.0Uniform pairs with class instances (bsd3, data, library)2018-09-11ConalElliott
union122.0Extensible type-safe unions (bsd3, data, library)2018-10-13int_index
union-find190.0Efficient union and equivalence testing of sets. (algorithms, bsd3, data, library)2012-06-23ThomasSchilling
union-find-array230.0union find data structure (algorithms, data, library, mit)2015-04-10BertramFelgenhauer, MartinAvanzini
union-map (deprecated)40.0Heterogeneous map by open unions. (bsd3, data, deprecated, library)2015-02-24
unique1810.0Fully concurrent unique identifiers (bsd3, concurrency, data, library)2021-01-04EdwardKmett, phadej, ryanglscott
uniqueid280.0Splittable Unique Identifier Supply (bsd3, data, library)2009-07-13SebastianFischer
uniqueness-periods-vector-filters20.0A library allows to change the structure of the 'RealFrac' function output. (data, game, language, library, math, mit, uniqueness-periods)2020-10-07OleksandrZhabenko
uniqueness-periods-vector-stats30.0A very basic descriptive statistics. (data, library, math, mit)2020-12-05OleksandrZhabenko
unit60.0Aliases for `()`. (bsd3, data, library)2018-01-15amohrland
universal-binary60.0Parser for OS X Universal Binary format. (bsd3, data, library)2010-03-25ErikCharlebois
universe290.0A class for finite and recursively enumerable types. (bsd3, data, library)2021-01-09DanielWagner, phadej
universe-base1880.0A class for finite and recursively enumerable types. (bsd3, data, library)2021-01-09DanielWagner, phadej
universe-dependent-sum (deprecated in favor of universe-some)190.0Universe instances for types from dependent-sum (bsd3, data, deprecated, library)2021-01-09phadej
universe-instances-base (deprecated in favor of universe-base)50.0Universe instances for types from the base package (bsd3, data, deprecated, library)2019-04-15DanielWagner, phadej
universe-instances-extended240.0Universe instances for types from selected extra packages (bsd3, data, library)2021-01-09DanielWagner, phadej
universe-instances-trans (deprecated in favor of universe-base)60.0Universe instances for types from the transformers and mtl packages (bsd3, data, deprecated, library)2019-04-15DanielWagner, phadej
universe-reverse-instances1350.0Instances of standard classes that are made possible by enumerations (bsd3, data, library)2021-01-09DanielWagner, phadej
universe-some260.0Universe instances for Some from some (bsd3, data, library)2021-01-09phadej
unix-time4620.0Unix time parser/formatter and utilities (bsd3, data, library)2019-06-18KazuYamamoto
unjson190.0Bidirectional JSON parsing and generation. (bsd3, data, library)2020-05-06GracjanPolak, MikhailGlushenkov, arybczak, jonathanjouty_scrive
unlifted-list20.0GHC Haskell lists of non-thunks (things of kind TYPE 'UnliftedRep) (bsd3, data, library)2018-12-05chessai
unliftio-pool130.0Data.Pool generalized to MonadUnliftIO. (bsd3, control, data, database, library, network)2020-03-20BardurArantsson
unliftio-streams40.0Generalization of io-streams to MonadUnliftIO (apache, data, io-streams, library, network)2019-04-13BardurArantsson
unordered-containers12512.75Efficient hashing-based container types (bsd3, data, library)2020-10-01JohanTibell, dfeuer, sjakobi
unordered-intmap70.0A specialization of `HashMap Int v` (bsd3, data, library)2018-07-01DmitryIvanov
unpacked-maybe-numeric40.0maybes of numeric values with fewer indirections (bsd3, data, library)2019-09-30andrewthad, chessai
unpacked-maybe-text30.0optional text that unpacks well (bsd3, data, library)2019-09-30andrewthad
unsafely40.0Flexible access control for unsafe operations and instances (bsd3, data, library)2014-09-21HiromiIshii
unwrapped-functors40.0Unwrapping sums/products lifted to functors (data, library)2018-07-13int_index
url-bytes20.0Memory efficient url type and parser. (data, library, mit)2020-08-21andrewthad, goolord
urlpath110.0Painfully simple URL deployment. (bsd3, data, library, web)2018-11-03athanclark
urn30.0Universal Resource Names (bsd3, data, library)2014-05-24SamTruzjan
urn-random60.0A package for updatable discrete distributions (data, library, mit)2017-07-14kwf, AntalSpectorZabusky
userid340.0The UserId type and useful instances for web development (bsd3, data, library)2021-01-11DavidFox, JeremyShaw
users-persistent50.0A persistent backend for the users package (data, library, mit)2016-05-22AlexanderThiemann
utc110.0A pragmatic time and date library. (data, library, mit, parsing, time)2015-06-17LarsPetersen
utf8-conversions22.0A string conversion library that assumes utf8 (bsd3, codec, data, library)2020-05-10chemirea
util-plus60.0A collection of commonly used utils (bsd3, data, library)2017-08-06AlexanderThiemann
utility-ht3172.0Various small helper functions for Lists, Maybes, Tuples, Functions (bsd3, data, library, list)2020-03-21HenningThielemann
uuid4540.0For creating, comparing, parsing and printing Universally Unique Identifiers (bsd3, data, library)2016-12-17AntoineLatter, HerbertValerioRiedel
uuid-aeson52.0Aeson types for UUID instances. (bsd3, data, library)2014-01-15KirkPeterson
uuid-bytes50.0UUID parsing using byteverse packages (data, library, mit)2020-08-07goolord
uuid-le30.0Universally Unique Identifiers with little-endian-ish encoding tools (data, library, mit)2014-09-29StijnVanDrongelen
uuid-quasi90.0Supplemental package for 'uuid' allowing quasiquotation. (bsd3, data, library)2013-10-21LarsPetersen
uuid-types4180.0Type definitions for Universally Unique Identifiers (bsd3, data, library)2016-04-02AntoineLatter, HerbertValerioRiedel
uvector50.0Fast unboxed arrays with a flexible interface (bsd3, data, library)2010-02-15BryanOSullivan, DonaldStewart
uvector-algorithms50.0Efficient algorithms for uvector unboxed arrays (bsd3, data, library)2009-09-08DanDoel
uxadt40.0Cross-language extensible representation for algebraic data type instances. (data, gpl, library)2014-07-22AndreiLapets
validated-literals40.0Compile-time checking for partial smart-constructors (bsd3, data, library)2019-01-10MerijnVerstraaten
validation1262.5A data-type like Either but with an accumulating Applicative (bsd3, data, library)2019-05-01TonyMorris, qfpl
validation-selective1282.25Lighweight pure data validation based on Applicative and Selective functors (data, library, mpl, selective, validation)2020-05-05shersh, vrom911
validators30.0Composable validations for your Haskell data types (data, library, mit)2019-10-23luc_tielen
value-supply50.0A library for generating values without having to thread state. (bsd3, data, library)2011-03-18IavorDiatchki
var90.0Mutable variables and tuples (bsd3, data, library)2013-06-10AndySonnenburg
variation70.0nominal value with possible variations (bsd3, data, library)2017-06-10cspollard
vault4990.0a persistent store for values of arbitrary types (bsd3, data, library)2020-04-06HeinrichApfelmus, sjakobi
vcd70.0Reading and writing VCD files. (bsd3, data, embedded, hardware, library)2012-12-19TomHawkins
vcs-revision50.0Facilities for accessing the version control revision of the current directory. (bsd3, data, library, parsing, system)2014-05-16EugeneKirpichov
vec460.0Vec: length-indexed (sized) list (bsd3, data, dependent-types, library)2019-12-13phadej
vec-lens1200.0Vec: length-indexed (sized) list: lens support (bsd3, data, dependent-types, lens, library)2019-12-13phadej
vec-optics30.0Vec: length-indexed (sized) list: optics support (bsd3, data, dependent-types, library, optics)2019-12-13phadej
vector7662.75Efficient Arrays (bsd3, data, data-structures, library)2020-02-01HerbertValerioRiedel, lehins, Bodigrim, topos
vector-algorithms9922.0Efficient algorithms for vector arrays (bsd3, data, library)2020-12-06BryanOSullivan, DanDoel, ErikDeCastroLopo
vector-binary50.0Binary instances for vector types (deprecated) (bsd3, data, library)2013-05-08JakubWaszczuk
vector-binary-instances4032.25Instances of Data.Binary for vector (bsd3, data, library)2018-11-02BenGamari, BryanOSullivan, DonaldStewart
vector-buffer40.0A buffer compatible with Data.Vector.* (bsd3, data, library)2015-03-30VivianMcPhail
vector-bytes-instances30.0Serial (from the bytes package) for Vector (from the vector package) (bsd3, data, library)2018-05-22RenzoCarbonara
vector-bytestring80.0ByteStrings as type synonyms of Storable Vectors of Word8s (bsd3, data, library)2012-01-03BasVanDijk
vector-circular570.0circular vectors (data, library, mit)2021-01-11DavidHimmelstrup, chessai
vector-clock80.0Vector clocks for versioning message flows (data, data-structures, distributed-computing, gpl, library)2013-06-23AlexandruScvortov, hansonkd
vector-conduit60.0Conduit utilities for vectors (data, library, mit)2012-12-31JaredHance
vector-doublezip30.0Some special functions to work with Vector (with zip). (data, library, mit)2020-06-24OleksandrZhabenko
vector-endian20.0Storable vectors with cpu-independent representation. (data, data-structures, library, mit)2019-04-22isd
vector-functorlazy50.0vectors that perform the fmap operation in constant time (bsd3, data, data-structures, library)2013-07-05MikeIzbicki
vector-heterogenous60.0A type-safe library for vectors whose elements can be of any type, or any type satisfying some constraints (bsd3, data, data-structures, library)2014-10-17MikeIzbicki
vector-instances1732.0Orphan Instances for 'Data.Vector' (bsd3, data, data-structures, library)2017-01-08EdwardKmett, ryanglscott
vector-instances-collections30.0Instances of the Data.Collections classes for Data.Vector.* (bsd3, data, library)2012-03-26TobiasBrandt
vector-mmap60.0Memory map immutable and mutable vectors (bsd3, data, data-structures, library)2017-06-30DanielPeebles, fho
vector-random30.0Generate vectors filled with high quality pseudorandom numbers (bsd3, data, library)2010-02-21DonaldStewart
vector-read-instances (deprecated in favor of vector)40.0(deprecated) Read instances for 'Data.Vector' (bsd3, data, data-structures, deprecated, library)2011-08-29ChristianHoener
vector-rotcev40.0Vectors with O(1) reverse (bsd3, data, data-structures, library)2019-10-27Bodigrim
vector-sized1912.25Size tagged vectors (bsd3, data, library)2020-12-15jle, jophish
vector-split80.0Combinator library for splitting vectors. (data, data-structures, library, mit)2017-01-31fho
vector-static (deprecated)50.0Statically checked sizes on Data.Vector (bsd3, data, data-structures, deprecated, library)2010-11-11DanielPeebles, JakeMcArthur
vector-text40.0Text implementation based on unboxed char vector. (apache, data, library)2018-12-18danilo2, iamrecursion
vector-th-unbox5612.0Deriver for Data.Vector.Unboxed using Template Haskell (bsd3, data, library)2019-09-24FumiakiKinoshita, LiyangHu, phadej
verbosity100.0Simple enum that encodes application verbosity. (bsd3, data, library)2020-02-16PeterTrsko
versioning40.0Type-safe data versioning. (apache, data, library)2019-01-08lortabac
versioning-servant40.0Servant combinators for the versioning library. (apache, data, library)2018-11-08lortabac
versions2422.25Types and parsers for software version numbers. (bsd3, data, library)2020-10-22fosskers
vflow-types40.0types for ingesting vflow data with aeson (bsd3, data, library, parsing, text, utility)2019-05-21chessai
vinyl-generics30.0Convert plain records to vinyl (and vice versa), generically. (bsd3, data, generics, library)2019-02-19GagandeepBhatia
vinyl-named-sugar20.0Syntax sugar for vinyl records using overloaded labels. (data, library, mit)2019-02-21Solonarv
vocabulary-kadma40.0Smaoin vocabulary definitions of the base framework. (data, library, public-domain)2015-06-18akrasner
vpq (deprecated)40.0Priority queue based on vector (bsd3, data, deprecated, library)2018-05-03
warc130.0A parser for the Web Archive (WARC) format (bsd3, data, library, program)2018-08-04BenGamari
wavesurfer30.0Parse WaveSurfer files (bsd3, data, library, sound, text)2009-03-23StefanKersten
weak-bag30.0Mutable bag backed by weak pointers to each item (bsd3, data, library)2018-10-04chessai
wide-word1290.0Data types for large but fixed width signed and unsigned integers (bsd2, data, library)2020-12-26ErikDeCastroLopo
winery310.0A compact, well-typed seralisation format for Haskell values (bsd3, codec, data, library, parsing, program, serialization)2020-10-29FumiakiKinoshita
wire-streams220.0Fast binary io-streams adapter. (bsd3, data, io-streams, library, parsing)2016-09-27winterland
wiring50.0Wiring, promotion and demotion of types. (bsd3, data, library)2018-08-11seanparsons
witch60.0Convert values from one type into another. (data, library)2020-12-05fozworth
with50.0Simple open product type (bsd3, control, data, library)2018-09-16iokasimovmt
with-index40.0A tiny library for composing indexed traversals (bsd3, data, lenses, library)2017-10-14PhilFreeman
with-location (deprecated in favor of call-stack)720.0Use ImplicitParams-based source locations in a backward compatible way (data, deprecated, library, mit)2016-03-16SimonHengel
witherable2112.5filterable traversable (bsd3, data, library)2021-01-17FumiakiKinoshita
witherable-class890.0Witherable = Traversable + Filterable (bsd3, data, library)2021-01-12FumiakiKinoshita
witness60.0values that witness types (bsd3, data, library)2020-09-22AshleyYakeley
wizard30.0the fantastical wizard monoid (bsd3, data, library)2019-05-02chessai
wkt80.0Parsec parsers and types for geographic data in well-known text (WKT) format. (bsd3, data, library)2017-08-29BenGamari
wkt-geom102.0A parser of WKT, WKB and eWKB. (apache, data, library)2020-04-03newmana
woe30.0Convenient typeclass for defining arbitrary-index enums. (bsd3, data, library)2019-09-20riuga
woffex30.0Web Open Font Format (WOFF) unpacker. (bsd3, data, program)2011-05-01AndrewDrake
woot50.0Real time group editor without operational transform. (data, library, mit)2016-08-05tgolson
word (deprecated)51.25Words of arbitrary size (bsd3, data, deprecated, library, math, numeric)2018-05-14
word-trie60.0Implementation of a finite trie over words. (data, gpl, library)2015-05-10DmitryIvanov, MateuszKowalczyk
word12 (deprecated)50.0Word12 library. (bsd3, data, deprecated, library)2014-09-07
word24232.024-bit word and int types for GHC (bsd3, data, library)2016-10-25JohnLato, winterland
word83910.0Word8 library (bsd3, data, library)2017-08-01KazuYamamoto
wordn10.0arbitrary bit size Words (data, library, mit)2020-09-30goolord
world-peace200.0Open Union and Open Product Types (bsd3, data, library)2020-06-24cdepillabout
wrap40.0Wrap a function's return value with another function (bsd3, data, functions, library)2015-02-06ChrisDone
wraparound30.0Convenient handling of points on a seamless 2-dimensional plane (bsd3, data, library)2012-11-28ChristopherHoward, infrared
wright60.0Colour space transformations and metrics. (data, library, mit)2014-05-16vi
x5095040.0X509 reader and writer (bsd3, data, library)2018-11-04VincentHanquez
x509-store4960.0X.509 collection accessing and storing methods (bsd3, data, library)2018-11-04VincentHanquez
x509-system4270.0Handle per-operating-system X.509 accessors and storage (bsd3, data, library)2017-07-31VincentHanquez
x509-util160.0Utility for X509 certificate and chain (bsd3, data, program)2018-11-04VincentHanquez
x509-validation4580.0X.509 Certificate and CRL validation (bsd3, data, library)2018-11-04VincentHanquez
xcb-types420.0Parses XML files used by the XCB project (bsd3, data, library)2019-02-14AntoineLatter, TychoAndersen
xls90.0Parse Microsoft Excel xls files (BIFF/Excel 97-2004) (bsd3, codec, data, library, parser, program, spreadsheet)2020-05-30harendra
xml-isogen110.0Generate XML-isomorphic types (data, library, mit)2018-04-19typeable
xml-query40.0A parser-agnostic declarative API for querying XML-documents (data, library, mit, parsing, xml)2016-04-04NikitaVolkov
xml-query-xml-conduit50.0A binding for the "xml-query" and "xml-conduit" libraries (data, library, mit, parsing, xml)2016-04-04NikitaVolkov
xml-query-xml-types30.0An interpreter of "xml-query" queries for the "xml-types" documents (data, library, mit, parsing, xml)2016-04-04NikitaVolkov
xor220.0Efficient XOR masking (codec, data, gpl, library)2020-05-17HerbertValerioRiedel
xournal-types60.0Data types for programs for xournal file format (bsd3, data, library)2016-02-12IanWooKim
xxhash82.25A Haskell implementation of the xxHash algorithm (bsd3, cryptography, data, library)2017-01-13christianmarie, ChristianMarie
yahoo-finance-conduit30.0Streaming aproach to the yahoo finance api (data, library, mit)2014-09-18AlexanderThiemann
yall100.0Lenses with a southern twang (bsd3, data, library)2012-09-21BrandonSimmons
yamemo30.0Simple memoisation function (bsd3, data, library)2014-01-20NobuoYamashita
yaml11912.0Support for parsing and rendering YAML documents. (bsd3, data, library)2020-08-19MichaelSnoyman
yaml-light40.0A light-weight wrapper with utility functions around HsSyck (bsd3, data, library)2010-10-27MichaelIlseman
yaml-light-lens50.0Lens interface to yaml-light. (bsd3, data, library)2020-02-03AnthonyCowley
yaml-pretty-extras (deprecated)40.0Extra functionality for pretty printing Yaml documents. (bsd3, data, deprecated, library)2018-06-28locallycompact
yaml-union50.0Read multiple yaml-files and override fields recursively (bsd3, data, library, program)2017-11-10michelk
yarn-lock140.0Represent and parse yarn.lock files (data, library, mit)2019-12-22Profpatsch
z8530.0Implementation of the z85 binary codec (bsd3, data, library)2018-12-30athanclark
zalgo (deprecated in favor of functional-kmp)60.0Z-algorithm implemented on haskell's built-in cons-cell-based lists. (bsd3, data, deprecated, library)2015-09-01mniip
zcache40.0Zobrist keys for game state tracking (bsd3, data, library)2010-06-14SamAnklesaria
zero70.0Semigroups with absorption (bsd3, data, library)2019-05-16DimitriSabadie
zippo40.0A simple lens-based, generic, heterogenous, type-checked zipper library (bsd3, data, library)2012-09-21BrandonSimmons
zlib-conduit (deprecated in favor of conduit-extra)380.0Streaming compression/decompression via conduits. (deprecated) (bsd3, conduit, data, deprecated, library)2014-04-02MichaelSnoyman
zm90.0Language independent, reproducible, absolute types (bsd3, data, library, reflection)2017-12-11PasqualinoAssini
zsdd30.0Zero-Suppressed and Reduced Decision Diagrams (bsd3, data, library)2020-05-07