Packages tagged data

2115 packages have this tag.

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Related tags: library (2088), bsd3 (1482), mit (323), deprecated (143), program (126), text (80), math (67), data-structures (64), gpl (62), parsing (53), public-domain (53), apache (51), control (46), lenses (35), concurrency (28), bsd2 (26), system (25), network (24), conduit (23), json (21), generics (20), cryptography (18), dependent-types (18), lgpl (18), serialization (17), web (16), numerical (15), configuration (14), algebra (13), codec (13), database (13), mpl (13), compilers-interpreters (12), parallelism (12), xml (12), streaming (11), graphics (10), optics (10), type-system (10), algorithms (9), language (9), records (9), bit (8), testing (8), agpl (7), enumerator (7), io-streams (7), reflection (7), succinct-data-structures (7), foreign (6), game (6), numeric (6), these (6), time (6), bit-vectors (5), development (5), failure (5), monads (5), physics (5), singletons (5), sound (5), combinators (4), conversion (4), csv (4), geography (4), graphs (4), lens (4), list (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), maths (3), optimization (3), statistics (3), test (3), tools (3), types (3), utility (3), vector (3), comonads (2), composition (2), compression (2), concurrent (2), data-science (2), digest (2), embedded (2), functions (2), geometry (2), ghc (2), irc (2), machine-learning (2), mathematics (2), nix (2), optimisation (2), other (2), pattern (2), phantom-types (2), random (2), search (2), sorting (2), spreadsheet (2), string (2), template-haskell (2), toml (2), tree (2), unicode (2), Excel (1), aeson (1), ai (1), api (1), array (1), aws (1), binary (1), bits (1), bsd4 (1), bytes (1), bytestring (1), bytestrings (1), cache (1), ...

Name
DLs
Rating
Description
Tags
Last U/L
Maintainer
ABList840.0An alternating list of two types (bsd3, data, library)2014-06-23DylanJust
AC-Angle500.0Angles in degrees and radians. (bsd3, data, library, math, numerical)2010-07-23AndrewCoppin
AC-Boolean580.0Handle Boolean values generatically. (bsd3, data, library, logic, math)2010-11-09AndrewCoppin
AC-Colour1540.0Efficient RGB colour types. (bsd3, data, graphics, library, math, numerical)2014-01-12AndrewCoppin
AC-HalfInteger590.0Efficient half-integer type. (bsd3, data, library, math, numerical)2009-08-12AndrewCoppin
AC-Terminal320.0Trivial wrapper over ansi-terminal. (bsd3, data, library, math, numerical)2010-10-28AndrewCoppin
AC-VanillaArray600.0Immutable arrays with plain integer indicies. (bsd3, data, library)2010-01-17AndrewCoppin
AC-Vector2850.0Efficient geometric vectors and transformations. (bsd3, data, graphics, library, math, numerical)2011-08-12AndrewCoppin
AC-Vector-Fancy1530.0Fancy 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)320.0foundational 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)1960.0arbitrary precision real interval arithmetic (bsd3, data, deprecated, library, math)2011-05-11MichalKonecny
AERN-Real-Double (deprecated in favor of aern2-mp, aern2-real)410.0arbitrary precision real interval arithmetic (bsd3, data, deprecated, library, math, program)2011-05-11MichalKonecny
AERN-Real-Interval (deprecated in favor of aern2-mp, aern2-real)310.0arbitrary precision real interval arithmetic (bsd3, data, deprecated, library, math)2011-05-11MichalKonecny
AERN-RnToRm (deprecated)1010.0polynomial function enclosures (PFEs) approximating exact real functions (bsd3, data, deprecated, library, math)2009-07-29MichalKonecny
AERN-RnToRm-Plot (deprecated)830.0GL plotting of polynomial function enclosures (PFEs) (bsd3, data, deprecated, library, math)2009-08-01MichalKonecny
ANum860.0Num instance for Applicatives provided via the ANum newtype (bsd3, data, library)2018-02-13DanBurton
AesonBson820.0Mapping between Aeson's JSON and Bson objects. (data, library)2019-12-01AndrasSlemmer, NiklasHambuechen
ArrayRef510.0Unboxed references, dynamic arrays and more (bsd3, data, library)2009-06-26GwernBranwen
AttoBencode520.0Fast Bencode encoding and parsing library (bsd3, data, library)2014-06-24FlorianHartwig
BiobaseENA240.0European Nucleotide Archive data (bsd3, data, library)2019-06-14ChristianHoener
Boolean4940.0Generalized booleans and numbers (bsd3, data, library)2017-02-19ConalElliott
CBOR280.0Encode/Decode values to/from CBOR (data, lgpl, library)2014-07-24KyleMurphy
CLASE450.0Cursor Library for A Structured Editor (bsd3, data, library)2009-02-11TristanAllwood
CLI200.0CLI tools (bsd3, data, library)2015-03-10g960059
COrdering260.0An algebraic data type similar to Prelude Ordering. (bsd3, data, library)2008-07-23AdrianHey
CTRex340.0Open records using closed type families. (bsd3, data, data-structures, library)2014-11-13AtzeVanDerPloeg
Cardinality360.0Measure container capacity. Use it to safely change container. (data, library)2010-01-20AndreySisoyev
Checked240.0Inbuilt checking for ultra reliable computing (bsd3, data, library)2012-11-05RobertOnslow
ClassyPrelude100.0Prelude replacement using classes instead of concrete types where reasonable (bsd3, control, data, library)2010-05-31SveinOveAas
ConsStream200.0Trivial re-export of Wouter Swierstra's Stream package, avoiding module name clash. (bsd3, data, library)2012-04-16ConalElliott
DCFL690.0Communication Free Learning-based constraint solver (data, library, mit)2015-07-08dpandya
DPutils940.0utilities for DP (bsd3, data, library)2019-03-27ChristianHoener
Data-Angle180.0Geometric angles (bsd3, data, library, math)2017-03-26deadmanswitch
Data-Hash-Consistent360.0Provide a simple consistent hashing mechanism (bsd3, data, library)2012-11-20BradClawsie
Data-Rope (deprecated in favor of data-rope)200.0Ropes, an alternative to (Byte)Strings. (data, deprecated, library)2010-05-29PierreEtienneMeunier
DataIndex120.0A package for adding index column to data files (data, library, mit, program)2016-10-09steven_yhw
DataVersion90.0Type safe data migrations (data, library, mit)2019-08-08agentultra
Digit (deprecated in favor of digit)390.0A data-type representing digits 0-9 (bsd3, data, deprecated, library)2011-09-06TonyMorris
DimensionalHash740.0An n-dimensional hash using Morton numbers. (algorithms, bsd3, data, library)2011-05-10GhassenHamrouni
Dish820.0Hash modules (currently Murmur3) (bsd3, data, library, program)2017-11-29zcourts
DistanceUnits330.0A comprehensive distance library (bsd3, data, library)2013-08-26MattGambogi
DynamicTimeWarp210.0Dynamic time warping of sequences. (data, lgpl, library, program)2015-02-05zombiecalypse
EnumContainers140.0Simple Enum-class-based int containers (bsd3, data, library)2010-11-22EyalLotem
EstProgress230.0Methods for estimating the progress of functions (bsd3, data, library)2015-08-10JamesCandy
EuroIT180.0Library for using euro currency, italian language (bsd3, data, library)2010-07-05PaoloVeronelli
Fin3350.0Finite totally-ordered sets (bsd3, data, library)2020-02-01MatthewFarkasDyck
FiniteMap (deprecated in favor of containers)190.0A 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-simple1170.0Fixed point, large word, and large int numerical representations (types and common class instances) (bsd3, data, library)2014-06-24ThomasDuBuisson
Focus360.0Tools for focusing in on locations within numbers (data, library, mit)2011-12-24NateSoares
Foster530.0Utilities to generate and solve puzzles (data, mit, program)2015-01-19Jefffrey
Frames3492.0Data frames For working with tabular data files (bsd3, data, library)2020-05-05AnthonyCowley
Frames-beam930.0A library for accessing Postgres tables as in-memory data structures. (bsd3, data, data-science, database, library)2018-09-02GagandeepBhatia
Frames-dsv820.0Alternative CSV parser for the Frames package (bsd3, data, library)2020-01-13AnthonyCowley
Frames-map-reduce570.0Frames wrapper for map-reduce-folds and some extra folds helpers. (bsd3, data, library)2020-01-09adamCS
HExcel322.25Create Excel files with Haskell (Excel, bsd3, data, library, spreadsheet, text)2020-03-14v0d1ch
HFrequencyQueue320.0A Queue with a random (weighted) pick function (data, gpl, library)2015-08-28Bellaz
HList3722.0Heterogeneous lists (data, library, mit)2018-02-20AdamVogt, GwernBranwen
HMap2520.0Fast heterogeneous maps and unconstrained typeable-like functionality. (bsd3, data, data-structures, library)2018-04-17AtzeVanDerPloeg
HSet530.0Faux heterogeneous sets (bsd3, data, library)2017-05-11athanclark
HaLeX1200.0HaLeX enables modelling, manipulation and visualization of regular languages (data, library, program, public-domain)2017-02-10GwernBranwen, joaoSaraiva
HappyTree810.0Type Safe and End to End Decision Tree (bsd3, data, library)2018-01-08MarisaVeryMoe
HasCacBDD470.0Haskell bindings for CacBDD (data, gpl, library)2019-06-19m4lvin
Hayoo312.0The Hayoo! search engine for Haskell API search on hackage (data, mit, program, text)2012-03-01UweSchmidt
HiggsSet (deprecated)300.0A multi-index set with advanced query capabilites (bsd3, data, deprecated, library)2012-02-04LarsPetersen
Holumbus-Searchengine350.0A search and indexing engine. (data, library, mit, text)2012-03-01UweSchmidt
HsJudy470.0Judy bindings, and some nice APIs (bsd3, data, library)2008-03-07GwernBranwen
HulkImport380.0Easily bulk import CSV data to SQL Server (bsd3, data, library, program)2015-11-09smobs
IDynamic100.0Indexable, serializable form of Data.Dynamic (bsd3, data, library)2009-10-16AlbertoCorona
IORefCAS (deprecated in favor of atomic-primops)1370.0Atomic compare and swap for IORefs and STRefs. (bsd3, data, deprecated, library)2013-05-07RyanNewton
IndexedList160.0Length- and element-indexed lists sitting somewhere between homogeneous and fully heterogeneous. (bsd3, data, library)2014-06-28kwf
InternedData100.0Data interning (with compact regions where possible) (bsd3, data, data-structures, library, natural-language-processing)2019-10-02ChristianHoener
Interpolation1420.0Multiline strings, interpolation and templating. (data, library, text)2012-10-05VilleTirronen
Interpolation-maxs200.0Multiline strings, interpolation and templating. (data, library, text)2014-03-14MaxwellSwadling
IntervalMap6222.0Containers for intervals, with efficient search. (bsd3, data, library)2019-04-05ChristophBreitkopf
IsNull250.0A typeclass to determine if a given value is null. (bsd3, data, library)2014-06-19jcristovao
Jdh210.0A Json implementation for Haskell, with JavaScript Values and Encoding/Decoding (data, library, mit)2017-02-25brunoczim
JuPyTer-notebook200.0JuPyTer notebook parser (bsd3, data, library, program)2017-11-21MichalGajda
LTree340.0Tree with only leaves carrying the data. (data, library, public-domain)2011-09-21RahulGopinath
Limit180.0Wrapper for data that can be unbounded (data, library, mit)2011-12-24NateSoares
ListZipper790.0Simple zipper for lists (bsd3, data, library)2011-10-31RyanIngram
MSQueue90.0Michael-Scott queue. (bsd3, data, library)2015-01-31julek
Map2370.0Class of key-value maps (bsd3, data, library)2019-12-05MatthewFarkasDyck
Mapping570.0Mapping (agpl, data, library)2018-02-27Zaoqi
Measure80.0A library for units of measurement (bsd3, data, library)2009-11-11TonyMorris
Mecha180.0mecha are the most complex composite machines known to humanity, lets build them well! (bsd2, concurrency, control, data, library, network, system)2016-08-11CarterSchonwald
Mechs70.0mecha are the most complex composite machines known to humanity, lets build them well! (bsd2, concurrency, control, data, library, network, system)2016-08-11CarterSchonwald
MemoTrie10552.0Trie-based memo functions (bsd3, data, library)2019-11-30ConalElliott
MyPrimes60.0Generate all primes (data, library, mit, program)2015-08-05afonsomatos
NMap300.0A transparent nested Map structure (data, library)2016-12-02ACastello
NestedFunctor280.0Nested composition of functors with a type index tracking nesting. (bsd3, data, library)2014-06-28kwf
NewBinary330.0A binary I/O library (data, library)2009-10-16JeremyShaw
NineP670.09P2000 in pure Haskell (bsd3, data, library)2013-09-22DaveLeimbach, SergeyAlirzaev
NonEmpty180.0Library providing a non-empty list datatype, and total functions operating on it (bsd3, data, library)2009-03-19RobinGreen
NonEmptyList (deprecated in favor of semigroups)1030.0A list with a length of at least one. (bsd3, data, deprecated, library)2010-08-28TonyMorris
NumInstances4240.0Instances of numeric classes for functions and tuples (bsd3, data, library)2014-09-26ConalElliott
NumLazyByteString (deprecated)210.0Num, Enum, Eq, Integral, Ord, Real, and Show instances for Lazy ByteStrings (bsd3, data, deprecated, library)2010-04-06ThomasDuBuisson
Object160.0Object oriented programming for haskell using multiparameter typeclasses. (apache, control, data, library)2014-05-15yokto
ObjectName4880.0Explicitly handled object names (bsd3, data, library)2015-12-22SvenPanne
Octree3560.0Simple unbalanced Octree for storing data about 3D points (bsd3, data, library)2018-07-15MichalGajda
OddWord772.25Provides a wrapper for deriving word types with fewer bits. (bsd3, data, library)2018-04-11RobinKay
Omega920.0Integer sets and relations using Presburger arithmetic (bsd3, data, library)2014-05-03ChristopherRodrigues
OneTuple2360.0Singleton Tuple (bsd3, data, library)2020-03-27JohnDorsey, phadej
Only8030.0The 1-tuple type or single-value "collection" (bsd3, data, library)2017-06-12HerbertValerioRiedel
OpenAFP1060.0IBM AFP document format parser and generator (data, library, public-domain)2017-04-04AudreyTang
OpenAFP-Utils1220.0Assorted utilities to work with AFP data streams (data, program, public-domain)2013-11-30AudreyTang
OptDir1070.0The OptDir type for representing optimization directions. (bsd3, data, library, optimisation, optimization)2020-01-13MasahiroSakai
OrderedBits1360.0Efficient ordered (by popcount) enumeration of bits (bsd3, data, library)2019-06-14ChristianHoener
PUH-Project300.0This is a package which includes Assignments, Email, User and Reviews modules for Programming in Haskell course. (bsd3, data, library)2016-01-21att
PathTree170.0A tree used to merge and maintain paths (bsd3, data, library)2016-07-16pjrt
Peano510.0simple Peano numbers (bsd3, data, library)2012-03-08AndrasSlemmer, FrancescoMazzoli
PeanoWitnesses190.0GADT type witnesses for Peano-style natural numbers. (bsd3, data, library)2014-06-28kwf
PerfectHash (deprecated in favor of perfecthash)610.0A perfect hashing library for mapping bytestrings to values. (bsd3, data, data-structures, deprecated, library)2016-04-29MarkWotton
Persistence2630.0A versatile library for topological data analysis. (bsd3, data, library, math)2019-08-19Ebanflo
Piso320.0Partial isomorphisms (bsd3, data, library)2017-05-09MartijnVanSteenbergen
PrimitiveArray6210.0Efficient multidimensional arrays (bsd3, data, library)2019-08-30ChristianHoener
PrimitiveArray-Pretty290.0Pretty-printing for primitive arrays (bsd3, data, library)2017-03-03ChristianHoener
QLearn192.0A library for fast, easy-to-use Q-learning. (data, library, mit)2016-05-01dpandya
QuadEdge150.0QuadEdge structure for representing triangulations (bsd3, data, library)2010-06-26NealAlexander
QuadTree300.0QuadTree library for Haskell, with lens support. (bsd3, data, game, library)2015-08-09Kron
RFC1751 (deprecated in favor of rfc1751)1390.0RFC-1751 library for Haskell (data, deprecated, library, public-domain)2018-08-13jprupp
RLP260.0RLP serialization as defined in Ethereum Yellow Paper (data, lgpl, library, parsing)2018-12-10jasagredo
Range90.0Data structure for managing ranges (bsd3, data, library)2013-04-19ThomasEding
Ranged-sets2092.25Ranged sets for Haskell (bsd3, data, library)2019-03-11PaulJohnson
Ref280.0Generic Mutable Ref Abstraction Layer (bsd3, data, library)2013-03-28CarterSchonwald
RefSerialize2540.0Write to and read from ByteStrings maintaining internal memory references (bsd3, data, database, library, parsing)2017-02-06AlbertoCorona
SG210.0Small geometry library for dealing with vectors and collision detection (bsd3, data, library, math)2009-03-17NeilBrown
SGplus280.0(updated) Small geometry library for dealing with vectors and collision detection (bsd3, data, library, math)2016-09-01donomii
SciBaseTypes170.0Base types and classes for statistics, sciences and humanities (bsd3, data, library)2019-03-27ChristianHoener
SegmentTree680.0Data structure for querying the set (or count) of intervals covering given point (bsd3, data, library)2012-10-29AlexandruScvortov, DmitryAstapov
Semigroup910.0A semigroup (bsd3, data, library)2011-04-13TonyMorris
Set410.0See README for more info (data, library, mpl)2019-12-27
ShortestPathProblems210.0grammars for TSP and SHP (bsd3, data, library)2017-03-06ChristianHoener
SizeCompare100.0Fast size comparison for standard containers. (data, library)2010-03-02BramSchuur
SpinCounter170.0Lock free Spin Counter (bsd3, data, library)2015-01-24julek
StateVar20290.0State variables (bsd3, data, library)2019-06-03EdwardKmett, SvenPanne
StateVar-transformer200.0State variables (bsd3, data, library)2014-03-06seagull
Strafunski-ATermLib410.0An abstract data type designed for the exchange of tree-like data structures (bsd3, data, library)2013-05-03JamesKoppel
Stream6050.0A library for manipulating infinite lists. (bsd3, data, library)2015-02-06WouterSwierstra
SuffixStructures60.0Suffix array construction (bsd3, data, data-structures, library, program)2015-05-07ChristianHoener
TCache4110.0A Transactional cache with user-defined persistence (bsd3, data, database, library)2017-02-11AlbertoCorona
Tainted550.0Tainted type, and associated operations (bsd3, control, data, library, monads, trans)2015-05-27RossMeikleham
Tape190.0Bidirectionally infinite streams, akin to the tape of a Turing machine. (bsd3, data, library)2014-06-28kwf
Tensor1800.0Tensor data types (bsd3, data, library)2018-07-25SvenPanne
Transhare180.0A library to apply transformation to containers so as to maximize sharing of unchanged subcomponents. (bsd3, data, library)2011-06-19ChrisKuklewicz
TreeCounter280.0Wait-free Tree Counter (bsd3, data, library)2015-01-24julek
Treiber330.0Lock free Treiber stack (bsd3, data, library)2015-01-31julek
TypeNat1490.0Some Nat-indexed types for GHC (data, library, mit)2017-11-09alexvieth
Unique7932.0It provides the functionality like unix "uniq" utility (bsd3, data, library)2020-01-26kapral
Validation (deprecated in favor of validation)290.0A data-type like Either but with an accumulating Applicative (bsd3, data, deprecated, library)2012-08-14TonyMorris
Vec1210.0Fixed-length lists and low-dimensional linear algebra. (bsd3, data, library, math)2014-08-06ScottDillard
Vec-Boolean480.0Provides Boolean instances for the Vec package (bsd3, data, library, math)2012-08-05TobiasBexelius
VecN300.0a simple peano-indexed vector type (bsd3, data, library)2012-03-03AndrasSlemmer
WAVE810.0WAVE audio file IO library (bsd3, data, library, program, sound)2020-04-02BartonMassey
WMSigner190.0WebMoney authentication module (cryptography, data, library, mit)2014-11-26triplepointfive
XML400.0Extensible Markup Language (bsd3, data, library)2018-08-19
ZipFold440.0Zipping folds (bsd3, data, library)2009-07-12ConalElliott
abcBridge1230.0Bindings for ABC, A System for Sequential Synthesis and Verification (bsd3, data, library)2015-12-12AaronTomb, KevinQuick, RobertDockins
abeson520.0interconversion between aeson and bson. (data, library, mit)2014-09-19HirotomoMoriwaki
abides380.0Simple boolean tests to see if a value abides by certain properties (bsd3, data, library, testing)2019-09-23athanclark
abstract-deque8430.0Abstract, parameterized interface to mutable Deques. (bsd3, data, library)2014-02-05RyanNewton
abstract-deque-tests590.0A test-suite for any queue or double-ended queue satisfying an interface (bsd3, data, library)2014-02-05RyanNewton
ac-machine950.0Aho-Corasick string matching algorithm in Haskell (bsd3, data, library)2013-09-30YutaTaniguchi
ac-machine-conduit210.0Drive Aho-Corasick machines in Conduit pipelines (bsd3, data, library)2013-09-30YutaTaniguchi
accelerate3412.5An embedded language for accelerated array processing (bsd3, compilers-interpreters, concurrency, data, library, parallelism)2018-10-07ManuelChakravarty, TrevorMcDonell
accelerate-bignum240.0Fixed-length large integer arithmetic for Accelerate (bsd3, compilers-interpreters, concurrency, data, library, parallelism)2018-04-04TrevorMcDonell
accelerate-cuda (deprecated in favor of accelerate-llvm-ptx)1160.0Accelerate backend for NVIDIA GPUs (bsd3, compilers-interpreters, concurrency, data, deprecated, library, parallelism)2017-03-31ManuelChakravarty, TrevorMcDonell
accelerate-examples1250.0Examples using the Accelerate library (bsd3, compilers-interpreters, concurrency, data, library, parallelism)2019-04-30ManuelChakravarty, TrevorMcDonell
accelerate-fft720.0FFT using the Accelerate library (bsd3, compilers-interpreters, concurrency, data, library, parallelism)2018-04-04TrevorMcDonell
accelerate-io1140.0Read and write Accelerate arrays in various formats (bsd3, compilers-interpreters, concurrency, data, library, parallelism)2018-04-04ManuelChakravarty, TrevorMcDonell
accelerate-llvm350.0Accelerate backend component generating LLVM IR (bsd3, compilers-interpreters, concurrency, data, library, parallelism)2019-04-29TrevorMcDonell
accelerate-llvm-native520.0Accelerate backend for multicore CPUs (bsd3, compilers-interpreters, concurrency, data, library, parallelism)2019-04-29TrevorMcDonell
accelerate-llvm-ptx782.0Accelerate backend for NVIDIA GPUs (bsd3, compilers-interpreters, concurrency, data, library, parallelism)2019-04-29TrevorMcDonell
accelerate-random (deprecated in favor of mwc-random-accelerate)100.0Generate Accelerate arrays filled with high quality pseudorandom numbers (bsd3, data, deprecated, library)2015-10-16TrevorMcDonell
access-token-provider230.0Provides Access Token for Services (bsd3, data, library)2018-05-01mtesseract
active10570.0Abstractions for animation (bsd3, data, library)2019-10-20BrentYorgey, RyanYates, jeffreyrosenbluth, bergey, cchalmers
adaptive-containers420.0Self optimizing container types (bsd3, data, library)2009-04-11DonaldStewart
adaptive-tuple290.0Self-optimizing tuple types (bsd3, data, library)2010-03-16JohnLato
aeson-applicative170.0make To/From JSOn instances from an applicative description (data, library, mit)2015-06-24GregWeber
aeson-bson300.0Mapping between Aeson's JSON and Bson objects. (data, library)2013-05-24AlfredoDiNapoli
aeson-casing2830.0Tools to change the formatting of field names in Aeson instances. (data, library, mit)2019-03-28andrewrademacher
aeson-extra6570.0Extra goodies for aeson (aeson, bsd3, data, library)2019-10-21phadej
aeson-injector3770.0Injecting fields into aeson values (data, json, library, mit, web)2020-05-20NCrashed
aeson-iproute610.0Aeson instances for iproute types (bsd3, data, library)2018-03-19sickmind, MaxGabriel
aeson-lens1190.0Lens of Aeson (bsd3, data, library)2013-02-14HideyukiTanaka
aeson-optics890.0Law-abiding optics for aeson (data, json, library, mit, optics)2019-09-22phadej
aeson-options400.0Options to derive FromJSON/ToJSON instances (data, json, library, mit)2018-10-01serokell
aeson-schema1460.0Haskell JSON schema validator and parser generator (data, library, mit)2020-04-09MateuszKowalczyk, TimBaumann, ChristianMarie, ocramz
aeson-t620.0Transform JSON (data, library, mit)2015-04-28begriffs
aeson-utils1090.0Utilities for working with Aeson. (bsd3, data, library)2015-05-25AdamBergmark, ErikHesselink
aeson-value-parser2240.0API for parsing "aeson" JSON tree into Haskell types (data, json, library, mit, parsing)2020-03-21NikitaVolkov
aeson-via410.0Wrappers to derive-via Aeson ToJSON/FromJSON typeclasses (bsd3, data, library)2020-05-08ejconlon
aeson-with510.0withXField combinators for aeson (bsd3, data, library)2020-05-15locallycompact
aeson-yak1700.0Handle JSON that may or may not be a list, or exist (data, library, mit)2017-12-20tejon
affinely-extended160.0 (data, library, mit)2017-04-05clinton
afis500.0Anti-forensic Information Splitter (bsd3, cryptography, data, library)2013-10-28VincentHanquez
aig990.0And-inverter graphs in Haskell. (bsd3, data, library)2018-06-12AaronTomb, KevinQuick, RobertDockins
aip1100.0Aeronautical Information Package (AIP) (aviation, bsd3, data, library, program)2019-03-04qfpl
algebraic-classes1710.0Conversions between algebraic classes and F-algebras. (bsd3, data, generics, library, math)2020-01-06SjoerdVisscher
algo-s200.0An implementation of Knuth's algorithm S. (apache, data, library, program)2016-08-16EricRochester
align310.0Sequence alignment algorithms. (bsd3, data, library)2015-07-16literon
alist580.0lists with O(1) append (bsd3, data, library)2019-08-03AlanHawkins
alphachar780.0A character between a-z (bsd3, data, library)2018-08-09TonyMorris, qfpl
alpino-tools (deprecated)510.0Alpino data manipulation tools (data, deprecated, library, natural-language-processing, program)2012-04-07DanielDeKok
altcomposition240.0Alternative combinators for unorthodox function composition (bsd3, data, library)2016-07-26jcristovao
alternative-io (deprecated in favor of io-choice)290.0IO as Alternative instance (deprecated) (bsd3, data, deprecated, library)2012-04-23KazuYamamoto
annotated-fix260.0A fixpoint of a functor that can be annotated (bsd3, data, library)2019-05-21GuerricChupin
anonymous-sums1010.0Anonymous sum types (bsd3, data, library)2016-12-23OmariNorman
anonymous-sums-tests190.0QuickCheck functions to accompany the anonymous-sums package (bsd3, data, library)2014-07-30OmariNorman
apache-md5712.0Apache specific MD5 digest algorighm. (bsd3, cryptography, data, library)2015-06-21PeterTrsko
apart740.0Get all your structure and rip it apart. (bsd3, control, data, library, program)2018-09-28iokasimovmt
apecs8120.0Fast Entity-Component-System library for game programming (bsd3, control, data, game, library)2020-02-18jonascarpay
apecs-stm840.0STM stores for apecs (bsd3, control, data, game, library)2020-02-11jonascarpay
app-lens450.0applicative (functional) bidirectional programming beyond composition chains (bsd3, data, lenses, library)2016-09-25kztk
appc170.0app container types and tools (data, library, mit, program)2015-04-10wereHamster
applicative-numbers1540.0Applicative-based numeric instances (bsd3, data, library, numerical)2014-04-09ConalElliott
approximate-equality520.0Newtype wrappers for approximate equality (bsd3, data, library)2014-08-16GregoryCrosswhite
arbor-lru-cache421.25LRU cache based on STM (concurrency, data, library, mit)2019-10-03newhoggy, arbornetworks
arff350.0Generate Attribute-Relation File Format (ARFF) files (bsd3, data, library, text)2008-11-18StefanKersten
arith-encode1920.0A practical arithmetic encoding (aka Godel numbering) library. (bsd3, data, library, serialization, test, testing)2020-02-09emc2, Bodigrim
armor90.0Prevent serialization backwards compatibility problems using golden tests (bsd3, data, library, testing)2018-03-14DougBeardsley
array-builder170.0Builders for arrays (bsd3, data, library)2019-09-12andrewthad
array-chunks200.0Lists of chunks (bsd3, data, library)2019-09-12andrewthad
array-primops110.0Extra foreign primops for primitive arrays (bsd3, data, library)2017-08-10AndrasKovacs
array-utils (deprecated)130.0Primitive functions for updating many elements in mutable arrays at once (bsd3, data, data-structures, deprecated, library)2011-01-29AlexMason
arraylist70.0Memory-efficient ArrayList implementation (bsd3, data, library)2018-10-25chessai
ascii2912.0The ASCII character set and encoding (apache, data, library, text)2020-05-20MichaelSnoyman, chris_martin, Monoid_Mary
ascii-case560.0ASCII letter case (apache, data, library, text)2020-05-20chris_martin, Monoid_Mary
ascii-char550.0A Char type representing an ASCII character (apache, data, library, text)2020-05-20chris_martin, Monoid_Mary
ascii-group570.0ASCII character groups (apache, data, library, text)2020-05-20chris_martin, Monoid_Mary
ascii-predicates560.0Various categorizations of ASCII characters (apache, data, library, text)2020-05-20chris_martin, Monoid_Mary
ascii-superset550.0Representing ASCII with refined supersets (apache, data, library, text)2020-05-20chris_martin, Monoid_Mary
ascii-table500.0ASCII table (bsd3, data, library)2019-03-15mitchellwrosen
ascii-th580.0Template Haskell support for ASCII (apache, data, library, text)2020-05-20chris_martin, Monoid_Mary
ascii-vector-avc220.0Process Ascii Vectors for Advantest 93k (data, gpl, library, program)2014-10-15m
ascii85-conduit200.0Conduit for encoding ByteString into Ascii85 (bsd3, conduit, data, library)2014-01-26KazuoKoga
asn180.0asn type and encoding/decoding (bsd3, data, library)2018-06-13chessai
asn1-data (deprecated in favor of asn1-encoding)6180.0ASN1 data reader and writer in RAW, BER and DER forms (bsd3, data, deprecated, library)2015-09-07VincentHanquez
asn1-encoding15221.75ASN1 data reader and writer in RAW, BER and DER forms (bsd3, data, library)2019-09-29VincentHanquez
asn1-parse13840.0Simple monadic parser for ASN1 stream types. (bsd3, data, library)2019-09-29VincentHanquez
asn1-types17870.0ASN.1 types (bsd3, data, library)2020-03-24VincentHanquez
assoc8820.0swap and assoc: Symmetric and Semigroupy Bifunctors (bsd3, data, library)2019-11-07phadej
assoc-list182.0Association lists (lists of tuples) (data, library, mit)2018-09-24chris_martin, Monoid_Mary
assoc-listlike200.0Association lists (list-like collections of tuples) (data, library, mit)2018-09-24chris_martin, Monoid_Mary
ast-path370.0vocabulary representation for predicting program properties (bsd3, data, library, natural-language-processing)2019-06-17ijaketak
astar670.0General A* search algorithm. (bsd3, data, library)2016-03-29CaleGibbard, JohannesWeiss
aterm270.0serialisation for Haskell values with sharing support (data, gpl, library, parsing)2011-08-04ChristianMaeder
atlassian-connect-descriptor2430.0Code that helps you create a valid Atlassian Connect Descriptor. (apache, data, library)2019-10-08RobertMassaioli, eero, AshleyValent
atomic-primops9492.0A safe approach to CAS and other atomic ops in Haskell. (bsd3, data, library)2019-05-02BrandonSimmons, GregoryCollins, RyanNewton, ryanglscott, peter_fogg, chchen
atomic-primops-foreign320.0An atomic counter implemented using the FFI. (bsd3, data, library)2014-08-18RyanNewton
attempt (deprecated in favor of exceptions)960.0Concrete data type for handling extensible exceptions as failures. (deprecated) (bsd3, data, deprecated, failure, library)2014-03-26MichaelSnoyman
atto-lisp2170.0Efficient parsing and serialisation of S-Expressions. (bsd3, data, library, text)2018-09-24ThomasSchilling
attoparsec-arff230.0An ARFF file parser using Attoparsec (ai, data, gpl, library, text)2012-02-09PaulWilson
attoparsec-binary1840.0Binary processing extensions to Attoparsec. (bsd3, data, library)2012-09-22AndrewDrake
attoparsec-conduit (deprecated in favor of conduit-extra)4030.0Consume attoparsec parsers via conduit. (deprecated) (conduit, data, deprecated, library, mit, parsing)2014-04-02MichaelSnoyman
attoparsec-iteratee830.0An adapter to convert attoparsec Parsers into blazing-fast Iteratees (bsd3, data, library)2011-11-28GregoryCollins, JohnLato
attoparsec-varword160.0Variable-length integer decoding for Attoparsec (data, lgpl, library)2018-05-03ch3pjw
attosplit290.0Split a lazy bytestring at boundaries defined by an attoparsec parser (bsd3, data, library)2011-12-19YitzGale
audiovisual210.0A battery-included audiovisual framework (bsd3, data, library, records)2015-03-21FumiakiKinoshita
automata270.0automata (bsd3, data, library, math)2019-01-22chessai
avl-static180.0A compile-time balanced AVL tree. (bsd3, data, library)2014-01-12FedericoLebron
avro4702.25Avro serialization support for Haskell (bsd3, data, library)2020-04-14newhoggy, alexeyraga, haskellworks
avro-piper730.0Tool for decoding avro (bsd3, data, library, program)2020-01-13haskellworks
b-tree1200.0Immutable disk-based B* trees (bsd3, data, library)2018-11-04BenGamari
bank-holidays-england2510.0Calculation of bank holidays in England and Wales (bsd3, data, library)2020-03-02dcturner, dten
barbies-th2070.0Create strippable HKD via TH (bsd3, data, generics, library)2020-06-03FumiakiKinoshita
base16880.0RFC 4648-compliant Base16 encodings/decodings (bsd3, data, library)2020-04-26topos
base16-bytestring12042.0Fast base16 (hex) encoding and decoding for ByteStrings (bsd3, data, library)2014-01-17BryanOSullivan, HerbertValerioRiedel, MikhailGlushenkov, topos
base16-lens270.0Optics for the Base16 library (bsd3, data, library)2020-03-30topos
base32850.0RFC 4648-compliant Base32 encodings/decodings (bsd3, data, library)2020-05-30topos
base32-bytestring460.0Fast base32 and base32hex codec for ByteStrings (bsd3, codec, data, library)2013-12-01SamTruzjan
base32-lens260.0Optics for the Base32 library (bsd3, data, library)2020-02-16topos
base32-z-bytestring530.0Fast z-base32 and z-base32hex codec for ByteStrings (bsd3, codec, data, library)2019-04-09AlfredoDiNapoli, RenzoCarbonara
base32string450.0Fast and safe representation of a Base-32 string (data, library, mit)2015-05-27solatis
base58-bytestring3250.0Implementation of BASE58 transcoding for ByteStrings (bytestrings, data, library, public-domain)2015-01-30AlekseyUymanov
base58string410.0Fast and safe representation of a Base-58 string (data, library, mit)2015-05-10solatis
base62280.0Base62 encoding and decoding (bsd3, data, library)2019-09-27andrewthad
base645360.0A modern RFC 4648-compliant Base64 library (bsd3, data, library)2020-05-19topos
base64-bytes210.0Base64 encoding of byte sequences (bsd3, data, library)2020-06-01andrewthad
base64-bytestring25990.0Fast base64 encoding and decoding for ByteStrings (bsd3, data, library)2020-04-24BryanOSullivan, HerbertValerioRiedel, MikhailGlushenkov, topos
base64-bytestring-type3380.0A newtype around ByteString, for base64 encoding (bsd3, data, library)2019-03-27phadej
base64-conduit (deprecated in favor of conduit-combinators)540.0Base64-encode and decode streams of bytes. (deprecated) (bsd3, conduit, data, deprecated, library)2014-03-21MichaelSnoyman
base64-lens980.0Optics for the Base64 library (bsd3, data, library)2020-02-19topos
baserock-schema1750.0Baserock Definitions Schema (bsd3, data, library, program)2018-07-03locallycompact
batch190.0Simplify queuing up data and processing it in batch. (bsd3, data, library)2018-01-27AlexanderThiemann
bcp47300.0Language tags as specified by BCP 47 (data, data-structures, library, mit)2019-08-26dukerutledge
bcrypt2750.0Haskell bindings to the bcrypt password hash (bsd3, cryptography, data, library)2017-12-31AndrewMiller
bdelta (deprecated in favor of bytestring-delta)360.0Simple, fast binary diff/patch (data, deprecated, library, mit)2012-02-22JoeyAdams
beamable550.0Generic serializer/deserializer with compact representation (bsd3, data, library, serialization)2014-06-03JohnLato, MichaelBaikov
bencoding1270.0A library for encoding and decoding of BEncode data. (bsd3, data, library)2019-10-27SamTruzjan, SergeyVinokurov
bert1110.0BERT implementation (bsd3, data, library)2016-04-05MariusEriksen, RomanCheplyaka, manzyuk
between660.0Function combinator "between" and derived combinators (bsd3, data, library)2016-01-09PeterTrsko
bff620.0Bidirectionalization for Free! (POPL'09) (data, library, public-domain)2011-03-22DanielSeidel, JanisVoigtlaender, JoachimBreitner
bff-mono500.0"Bidirectionalization for Free" for Monomorphic Transformations (bsd3, data, lenses, library)2014-08-14kztk
bidispec280.0Specification of generators and parsers (data, library)2010-10-05DavidLeuschner, StefanWehr
bidispec-extras160.0Extra helper functions for bidirectional specifications (data, library)2010-10-05StefanWehr
bifunctors32112.5Bifunctors (bsd3, data, functors, library)2020-01-29EdwardKmett, EricMertens, ryanglscott
bimap5570.0Bidirectional mapping between two key types (bsd3, data, library)2019-06-14StuartCook, joel_williamson
bimap-server390.0Two-column database server. (bsd3, data, library)2015-07-06DanielDiaz
bimaps1030.0bijections with multiple implementations. (bsd3, data, library)2017-03-03ChristianHoener
bin360.0Bin: binary natural numbers. (data, dependent-types, gpl, library, math, singletons)2019-12-13phadej
binary29110.0Binary serialisation for Haskell values using lazy ByteStrings (bsd3, data, library, parsing)2018-08-02DonaldStewart, IanLynagh, LennartKolmodin
binary-bits990.0Bit parsing/writing on top of binary. (bsd3, data, library, parsing)2015-01-09LennartKolmodin
binary-communicator520.0Flexible way to ease transmission of binary data. (bsd3, data, library)2015-09-14SoenkeHahn, YvesPares
binary-derive250.0Automatic deriving of Binary using GHC.Generics (data, gpl, library)2011-11-05JaredHance
binary-enum290.0Simple wrappers around enum types (bsd3, data, library)2016-01-16tolysz
binary-ext720.0An alternate with strong-typed errors for `Data.Binary.Get` monad from `binary` package. (data, library, parsing)2018-06-01warlock
binary-generic240.0Generic binary serialisation using binary and syb. (bsd3, data, library, parsing)2012-08-07LarsPetersen
binary-ieee754610.0Backport ieee754 float double combinators to older binary (bsd3, data, library)2016-10-24winterland
binary-indexed-tree170.0Binary Indexed Trees (a.k.a. Fenwick Trees). (data, library)2012-10-10MaxwellSayles
binary-io1012.0Read and write values of types that implement Binary (bsd3, data, io, library, parsing)2020-05-31vapourismo
binary-list2640.0Lists of length a power of two. (bsd3, data, library)2016-07-07DanielDiaz
binary-orphans11110.0Compatibility package for binary; provides instances (binary, bsd3, compatibility, data, library, parsing)2019-05-13phadej
binary-parsers990.0Extends binary with parsec/attoparsec style parsing combinators. (bsd3, data, library)2019-06-26winterland
binary-protocol120.0Monad to ease implementing a binary network protocol. (bsd3, data, library)2009-09-04GregoryCrosswhite
binary-protocol-zmq270.0Monad to ease implementing a binary network protocol over ZeroMQ (bsd3, data, library, network)2010-08-02NicolasTrangez
binary-shared700.0Sharing for the binary package (data, library)2013-05-04HamishMackenzie, JuergenNicklischFranken
binary-state320.0Simple wrapper around Data.Binary, which adds StateT to Get/Put monads. (bsd3, data, library)2011-09-30IlyaPortnov
binary-store (deprecated)160.0Format to store data using the binary transform. (bsd3, data, deprecated, library)2015-01-14DanielDiaz
binary-streams240.0data serialization/deserialization io-streams library (bsd3, data, io-streams, library)2015-05-07GregoryCollins, petterb
binary-strict2600.0Binary deserialisation using strict ByteStrings (bsd3, data, library, parsing)2020-04-11AdamLangley, DominicSteinitz
binary-tagged3240.0Tagged binary serialisation. (bsd3, data, library)2020-05-16phadej
binary-typed (deprecated)590.0Type-safe binary serialization (bsd2, data, deprecated, library, serialization)2015-12-19quchen
binary-varint310.0VarInt encoding/decoding via Data.Binary (bsd3, data, library)2019-05-23KimAltintop, jkarni
binarydefer460.0Binary serialization with deferred loading (bsd3, data, library)2014-03-13NeilMitchell
bind-marshal150.0Data marshaling library that uses type level equations to optimize buffering. (bsd3, data, library)2011-10-30CoreyOConnor
bindynamic460.0A variation of Data.Dynamic.Dynamic with a Binary instance (data, gpl, library)2018-03-26lspitzner
bini482.0A collection of various methods for reading and writing bini files. (bsd3, configuration, data, library)2016-01-22TWeise
bit-protocol1092.0Encode binary protocols with some odd bit numbers into a bytestring (bits, bsd3, bytes, data, library, parsing, protocols)2018-07-30k_bx
bit-vector150.0Simple bit vectors for Haskell (bit-vectors, bsd3, data, library)2015-03-24AdamFoltzer
bitarray5310.0Mutable and immutable bit arrays (bsd3, data, library)2014-08-12BalazsKomuves
bitmap390.0A library for handling and manipulating bitmaps (rectangular pixel arrays). (bsd3, data, graphics, library)2012-02-13BalazsKomuves
bitmap-opengl430.0OpenGL support for Data.Bitmap. (bsd3, data, graphics, library)2014-03-19BalazsKomuves
bitmaps360.0Bitmap library (bsd3, codec, data, graphics, library)2014-11-30ByronJohnson
bits2632.0Various bit twiddling and bitwise serialization primitives (bsd3, data, library, serialization)2019-05-02EdwardKmett, EricMertens, ryanglscott
bits-atomic1170.0Atomic bit operations on memory locations for low-level synchronization (bsd3, concurrency, data, foreign, library)2010-09-05GabrielWicke
bits-bytestring280.0Bits instance for bytestrings. (bsd3, data, library)2016-03-25oldmanmike
bits-bytestring-lazy180.0Bits instance for lazy bytestrings. (bsd3, data, library)2016-09-07semaj
bits-conduit310.0Bitstream support for Conduit (bsd3, conduit, data, library)2012-06-29HideyukiTanaka
bits-extra1210.0Useful bitwise operations (bit, bsd3, data, library)2020-04-14newhoggy, haskellworks, GeorgeWilson
bits-extras410.0Efficient high-level bit operations not found in Data.Bits (bsd3, data, library)2010-09-20GabrielWicke
bitstream770.0Fast, packed, strict and lazy bit streams with stream fusion (data, library, public-domain)2019-12-26MasatakeDaimon
bitstring190.0Lazy bit strings (bsd3, data, library)2010-08-01BalazsKomuves
bitvec1502.0Space-efficient bit vectors (bit-vectors, bsd3, data, library, public-domain)2020-03-25JamesCook, Bodigrim
bitwise1840.0fast multi-dimensional unboxed bit packed Bool arrays (bit-vectors, bsd3, data, data-structures, library)2018-04-26ClaudeHeilandAllen
bitwise-enum370.0Bitwise operations on bounded enumerations (bsd3, data, data-structures, foreign, library)2020-04-27jnbooth
blaze-builder22800.0Efficient buffered output. (bsd3, data, library)2018-03-14JasperVanDerJeugt, LeonSmith, SimonMeier
blaze-builder-conduit (deprecated in favor of conduit-extra)4320.0Convert streams of builders to streams of bytestrings. (deprecated) (bsd3, conduit, data, deprecated, library)2014-04-02MichaelSnoyman
blaze-builder-enumerator1830.0Enumeratees for the incremental conversion of builders to bytestrings. (bsd3, data, enumerator, library)2015-04-01MichaelSnoyman, SimonHengel, SimonMeier, ThomasSutton
blazeT830.0A true monad (transformer) version of the blaze-markup and blaze-html libraries (data, library, mit, text, web)2017-01-15johannesgerer
bloomfilter2800.0Pure and impure Bloom Filter implementations. (bsd3, data, library)2015-05-19BryanOSullivan
bloomfilter-redis342.0Distributed bloom filters on Redis (using the Hedis client). (bsd3, data, library)2019-06-25hesiod
boltzmann-samplers530.0Uniform random generators (data, generic, library, mit, random)2018-04-01lyxia
bond-haskell1570.0Runtime support for BOND serialization (bsd3, data, library, parsing)2016-11-26blaze
bool-extras890.0A fold function for Bool (bsd3, data, library)2014-04-04TomLokhorst
boolean-list710.0convert numbers to binary coded lists (data, gpl, library)2017-10-26AlanHawkins
boolean-normal-forms860.0Boolean normal form: NNF, DNF & CNF (data, library, mit)2019-12-04phadej
boombox190.0Chronokinetic stream sources and incremental consumers (bsd3, data, library)2016-02-08FumiakiKinoshita
boring550.0Boring and Absurd types (bsd3, data, library)2019-12-13phadej
both820.0Like Maybe, but with a different Monoid instance. (data, library, mit)2020-05-17barrucadu
bounded-array60.0Arrays with a value for every index (bsd3, data, library)2018-10-15puffnfresh
bounded-queue210.0A strict, immutable, thread-safe, single-ended, bounded queue. (bsd3, data, library)2019-05-06fosskers
boundingboxes700.0A generic boundingbox for an arbitrary vector (bsd3, data, library)2015-03-14FumiakiKinoshita
browscap170.0A reader and interface for the Browser Capabilities Project data files. (bsd3, data, library, web)2017-04-30davean
bsb-http-chunked9040.0Chunked HTTP transfer encoding for bytestring builders (bsd3, data, library, network)2018-09-29sjakobi
bson4290.0BSON documents are JSON-like objects with a standard binary encoding. (apache, data, library)2020-03-23FedorGogolev, GregWeber, MaximMitroshin, TonyHannan, VictorDenisov
bson-generic740.0Generic functionality for BSON (bsd3, data, library)2016-01-09PetrPilar
bson-generics (deprecated in favor of bson-generic)180.0Generics functionality for BSON (bsd3, data, deprecated, library)2012-01-26PetrPilar
bson-mapping680.0Mapping between BSON and algebraic data types. (data, library)2017-03-05FrancescoMazzoli, ak3n
bspack430.0A simple and fast bytestring packer (bsd3, data, library)2014-12-02nicolasdp
btree1060.0B-Tree on Unmanaged Heap (bsd3, data, library)2018-11-09andrewthad, chessai
buffer430.0Simple mutable low-level buffer for IO (data, library, mit)2017-11-01NikitaVolkov
buffer-builder1800.0Library for efficiently building up buffers, one piece at a time (bsd3, data, library)2018-10-12chadaustin, afriesen
buffer-builder-aeson310.0Serialize Aeson values with Data.BufferBuilder (data, library, mit)2015-11-02chadaustin, afriesen
buildable470.0Typeclass for builders of linear data structures (data, library, mit)2015-03-10IvanMiljenovic
builder170.0bounded ByteArray builder type (bsd3, data, library)2019-09-13chessai
bv1410.0Bit-vector arithmetic library (bit-vectors, bsd3, data, library)2018-03-11IagoAbal
bv-embed160.0Define embeddings of small bit vectors into larger ones (bsd3, data, library)2019-01-27benselfridge
bv-little942.0Efficient little-endian bit vector library (bit-vectors, bsd3, data, library)2019-10-09recursion_ninja
byte-order750.0Portable big-endian and little-endian conversions (bsd3, data, library)2020-01-06andrewthad
byteable8200.0Type class for sequence of bytes (bsd3, data, library)2013-06-28VincentHanquez
bytebuild1140.0Serialize to a small byte arrays (bsd3, data, library)2020-05-01andrewthad
bytehash190.0Universal hashing of bytes (bsd3, data, library)2020-04-30andrewthad
bytelog190.0Fast logging (bsd3, data, library)2020-03-09andrewthad
bytes16512.0Sharing code for serialization between binary and cereal (bsd3, data, library, serialization)2020-02-03EdwardKmett, EricMertens, ryanglscott
byteset340.0Set of bytes. (bsd3, data, library)2015-07-07DanielDiaz
byteslice1150.0Slicing managed and unmanaged memory (bsd3, data, library)2020-04-30andrewthad
bytesmith1720.0Nonresumable byte parser (bsd3, data, library)2020-03-04andrewthad
bytestring10232.75Fast, compact, strict and lazy byte strings with a list interface (bsd3, data, library)2019-07-13DonaldStewart, DuncanCoutts, HerbertValerioRiedel, IanLynagh
bytestring-arbitrary1712.0Arbitrary instances for ByteStrings (bsd3, data, library)2019-06-04tsuraan
bytestring-builder15290.0The new bytestring builder, packaged outside of GHC (bsd3, data, library)2018-09-25LeonSmith, ryanglscott
bytestring-builder-varword180.0Variable-length integer encoding (data, lgpl, library)2018-05-03ch3pjw
bytestring-class (deprecated)320.0Classes for automatic conversion to and from strict and lazy bytestrings. (deprecated) (bsd3, data, deprecated, library)2014-03-21MichaelSnoyman
bytestring-conversion4671.25Type-classes to convert values to and from ByteString. (data, library, mpl)2015-07-07ToralfWittner
bytestring-csv460.0Parse CSV formatted data efficiently (bsd3, data, library)2008-07-21DonaldStewart
bytestring-delta270.0Simple, fast binary diff/patch (data, library, mit)2012-02-22JoeyAdams
bytestring-encoding310.0ByteString ↔ Text converter based on GHC.IO.Encoding (bsd3, data, library, text)2018-09-02MasahiroSakai
bytestring-encodings930.0checks 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)570.0A type-class to convert values from ByteString. (data, deprecated, library)2014-05-23ToralfWittner
bytestring-lexing6870.0Parse and produce literals efficiently from strict or lazy bytestrings. (bsd2, data, library)2015-06-07DonaldStewart, WrenThornton
bytestring-plain360.0Plain byte strings ('ForeignPtr'-less 'ByteString's) (bsd3, data, library)2015-09-07HerbertValerioRiedel
bytestring-read470.0fast ByteString to number converting library (data, library, mit)2015-06-15HirotomoMoriwaki
bytestring-substring80.0break bytestrings up into substrings (bsd3, data, library, parsing)2019-04-25chessai
bytestring-time (deprecated in favor of text-time)280.0Library for Time parsing from ByteString (bsd3, data, deprecated, library)2016-12-13klangner
bytestring-trie4332.5An efficient finite map from (byte)strings to values. (bsd3, data, data-structures, library)2019-02-26WrenThornton, WrenRomano
bytestring-typenats190.0Bytestrings with typenat lengths (bsd3, data, library)2017-01-26tsuraan
ca-province-codes290.0ISO 3166-2:CA Province Codes and Names (bsd3, data, library)2019-01-28lysergia
cache1202.0An in-memory key/value store with expiration support (bsd3, cache, data, library)2019-12-09hverr
cached-traversable360.0Transparent, persistent caching of lazy, traversable structures (bsd3, data, library)2014-10-07ThomasTuegel
call-stack16330.0Use GHC call-stacks in a backward compatible way (data, library, mit)2019-08-04SimonHengel
cantor-pairing820.0Convert data to and from a natural number representation (data, library, mit)2020-02-12identicalsnowflake
capnp1330.0Cap'n Proto for Haskell (capnproto, data, library, mit, network, program, rpc, serialization)2020-05-07isd
capped-list (deprecated in favor of enumerator)310.0A list-like type for lazy sequences, with a user-defined termination value. (bsd3, data, deprecated, library)2010-01-09JohnMillikin
carray3450.0A C-compatible array library. (bsd3, data, library)2017-07-18HenningThielemann, JedBrown
case-insensitive19740.0Case insensitive string comparison (bsd3, data, library, text)2019-05-05BasVanDijk, SimonHengel
cassava-conduit3560.0Conduit interface for cassava package (bsd3, data, library)2018-11-30domdere
cassava-streams1770.0io-streams interface for the cassava CSV library. (bsd3, csv, data, io-streams, library, text)2019-04-15PeterJones
castagnoli160.0Portable CRC-32C (bsd3, data, library)2019-11-05andrewthad
categorical-algebra140.0Categorical Monoids and Semirings (bsd3, data, library)2012-03-26JonathanFischoff
ccast (deprecated)180.0typesafe c-style casts; useful for FFI (bsd3, data, deprecated, library)2018-05-29chessai
cereal21242.0A binary serialization library (bsd3, data, library, parsing)2019-05-31EricMertens, ThomasDuBuisson, TrevorElliott
cereal-derive190.0Automatic deriving of Serialize using GHC.Generics (data, gpl, library)2011-11-06JaredHance
cereal-ieee754 (deprecated in favor of cereal)180.0Floating point support for the 'cereal' serialization library (bsd3, data, deprecated, library, parsing)2011-08-31JacobStanley
cereal-io-streams190.0io-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)80.0Use cereal to encode/decode io-streams. (bsd3, data, deprecated, io-streams, library, parsing)2016-07-09winterland
cereal-text1630.0Data.Text instances for the cereal serialization library (apache, data, library)2016-06-01ulikoehler
cereal-time320.0Serialize instances for types from `time` package. (bsd3, data, library)2017-11-06zohl
cereal-vector2580.0Serialize instances for Data.Vector types. (bsd3, data, library)2014-02-16AdamFoltzer
certificate (deprecated in favor of x509)5730.0Certificates and Key Reader/Writer (bsd3, data, deprecated, library)2013-10-07VincentHanquez
chain-codes350.0Library decoding chain codes from images (data, gpl, library)2014-03-16MateuszKowalczyk
charset12620.0Fast unicode character sets based on complemented PATRICIA tries (bsd3, data, library)2015-04-01EdwardKmett, phadej, ryanglscott
chaselev-deque2510.0Chase & Lev work-stealing lock-free double-ended queues (deques). (bsd3, concurrent, data, library)2015-03-08BrandonSimmons, RyanNewton, peter_fogg
chatty-utils910.0Some utilities every serious chatty-based application may need. (agpl, data, library)2017-03-01implementation
checked290.0Bounds-checking integer types. (bsd3, data, library)2010-09-18AntoineLatter
chimera1100.0Lazy infinite streams with O(1) indexing (bsd3, data, library)2020-03-25Bodigrim
choice660.0A solution to boolean blindness. (data, library, public-domain)2017-08-16MathieuBoespflug
chronos4090.0A performant time library (bsd3, data, development, library, parsing, time)2020-04-17andrewthad, chessai
chunked-data4210.0Typeclasses for dealing with various chunked data representations (data, library, mit)2018-01-15MichaelSnoyman
church-maybe300.0Church encoded Maybe (bsd3, data, library)2018-08-01qfpl
church-pair400.0Church encoded pair (bsd3, data, library)2017-07-07mat8913
cimple180.0Simple C-like programming language (data, gpl, library, program)2020-04-10iphydf
ciphersaber2390.0Implementation of CipherSaber2 RC4 cryptography. (data, library, mit, program)2015-12-16BartonMassey
classify1080.0Library for classification of media files. (data, library, public-domain)2013-11-06DavidHimmelstrup
classyplate2110.0Fuseable type-class based generics (bsd3, data, library)2018-11-14lazac
clean-unions (deprecated in favor of extensible)500.0Open unions without need for Typeable (bsd3, data, deprecated, library)2014-10-13FumiakiKinoshita
clist (deprecated in favor of Fin)1010.0Counted list (data, deprecated, library)2020-02-11
closed342.0Integers bounded by a closed interval (data, library, mit)2019-01-03cdparks
cmf280.0(C)oncurrent (M)onoidal (F)olds (data, library, mit)2019-11-23chessai
cmph190.0low level interface to CMPH (bsd3, data, data-structures, library)2016-04-30MarkWotton
code-builder280.0Simple system for generating code. (bsd3, data, library)2014-05-26AdamBergmark, ErikHesselink
codec402.0Simple bidirectional serialization (bsd3, data, library)2017-04-21PatrickChilton
codec-libevent (deprecated)380.0Cross-platform structure serialisation (bsd3, data, deprecated, library, parsing, program)2008-01-27AdamLangley
coerce-util (deprecated in favor of coercible-utils)180.0utils for Data.Coerce (data, deprecated, library, mit)2018-04-20chessai
coercible-subtypes180.0Coercible but only in one direction (bsd3, data, library)2020-04-08viercc
coercion-extras90.0Extra utilities for manipulating nominal and representational coercions (bsd3, data, library)2019-08-05mniip
cofunctor (deprecated in favor of contravariant)220.0DEPRECATED: use the "contravariant" package (bsd3, data, deprecated, library)2011-09-20BrandonSimmons
collection-json2630.0Collection+JSON—Hypermedia Type Tools (data, library, mit)2019-02-22alunduil
colors650.0A type for colors (bsd3, data, library)2015-02-23FumiakiKinoshita
colour15642.0A model for human colour/color perception (data, graphics, library, mit)2019-05-05RussellOConnor
colour-accelerate340.0Working with colours in Accelerate (bsd3, data, graphics, library)2018-04-04TrevorMcDonell
colour-space610.0Instances of the manifold-classes for colour types (data, gpl, graphics, library, maths)2019-10-15leftaroundabout
combobuffer130.0Various buffer implementations (bsd3, data, library)2014-05-19JohnLato
comfort-graph1940.0Graph structure with type parameters for nodes and edges (bsd3, data, library)2018-08-31HenningThielemann
comic200.0A format for describing comics. (bsd3, data, library)2019-04-30davean
commutative1400.0Commutative binary operations. (bsd3, data, library)2018-11-20athanclark
compact822.0Non-GC'd, contiguous storage for immutable data structures (bsd3, data, library)2020-04-13BenGamari, EdwardYang
compact-list320.0An append only list in a compact region (bsd3, data, library)2018-09-06harendra
compact-map300.0Compact Data.Map implementation using Data.Binary (bsd3, data, library)2008-11-09DavidHimmelstrup
compact-mutable-vector260.0Mutable vector with different GC characteristics (bsd3, data, library)2019-02-26rightfold
compact-string (deprecated in favor of text)60.0Fast, packed and strict strings with Unicode support, based on bytestrings. (bsd3, data, deprecated, library)2008-11-27TwanVanLaarhoven
compact-string-fix310.0Same as compact-string except with a small fix so it builds on ghc-6.12 (bsd3, data, library)2011-08-19TonyHannan
compact-word-vectors590.0Small vectors of small integers stored very compactly. (bsd3, data, library)2019-11-24BalazsKomuves
compactmap1480.0A read-only memory-efficient key-value store. (bsd3, data, library)2017-07-28SimonMarechal
compose-ltr732.0More intuitive, left-to-right function composition. (data, library, mit)2017-11-21Wizek
composition2910.0Combinators for unorthodox function composition (bsd3, data, library)2015-12-31DanBurton
composition-extra1760.0Combinators for unorthodox structure composition (bsd3, data, library)2015-09-17athanclark
composition-prelude12742.0Higher-order function combinators (bsd3, control, data, library)2020-05-28vmchale
composition-tree770.0Composition trees for arbitrary monoids. (bsd3, data, library)2018-05-07LiamOConnorDavis
compositional-data (deprecated)271.25Compositional Data Types (bsd3, data, deprecated, library)2018-12-27
compound-types972.0Sum and Product types and such (data, library, mit, type-system, types)2020-04-27NikitaVolkov
compressed1332.0Compressed containers and reducers (bsd3, compression, data, library, mapreduce)2018-01-08EdwardKmett
comptrans380.0Automatically converting ASTs into compositional data types (bsd3, data, generics, library)2015-04-01JamesKoppel
concise2410.0Utilities for Control.Lens.Cons (bsd3, data, lenses, library)2018-02-04frasertweedale
concrete-haskell1600.0Library for the Concrete data format. (data, library, program)2017-12-10TomLippincott
concrete-haskell-autogen660.0Automatically generated Thrift definitions for the Concrete data format. (data, library)2017-09-03TomLippincott
concrete-typerep370.0Binary and Hashable instances for TypeRep (bsd3, data, library)2013-01-08ReinerPope
concurrent-batch240.0Concurrent batching queue based on STM with timeout. (bsd3, data, library)2018-07-28HarpoRoeder
concurrent-buffer310.0Concurrent expanding buffer (data, library, mit)2017-10-26NikitaVolkov
concurrent-resource-map370.0Concurrent resource map (bsd3, data, library)2020-03-18MateuszKowalczyk
condorcet190.0Library for Condorcet voting (bsd3, data, library)2008-02-26GwernBranwen
conduit38542.5Streaming data processing library. (conduit, data, library, mit)2020-03-19MichaelSnoyman
conduit-combinators7440.0DEPRECATED Functionality merged into the conduit package itself (conduit, data, library, mit)2018-02-01MichaelSloan, MichaelSnoyman
conduit-concurrent-map612.0Concurrent, order-preserving mapping Conduit (conduit, data, library, mit)2018-08-31NiklasHambuechen
conduit-extra25370.0Batteries included conduit: adapters for common libraries. (conduit, data, library, mit)2020-03-19MichaelSnoyman
conduit-resumablesink670.0Allows conduit to resume sinks to feed multiple sources into it. (bsd3, conduit, data, library)2017-11-01AndrewMiller
conduit-throttle940.0Throttle Conduit Producers (bsd3, data, library)2017-12-21mtesseract
conduit-tokenize-attoparsec (deprecated)70.0Conduits for tokenizing streams. (bsd3, conduit, data, deprecated, library, program)2016-01-31newhoggy, haskellworks
conffmt190.0A .conf file formatter (data, mit, program)2016-08-31yamadapc
confide370.0derive typeclass instances for decoding types from HOCON conf (bsd3, data, library)2018-03-08amilkov
config-manager420.0Configuration management (configuration, data, gpl, library)2016-08-13guyonvarch
configifier980.0parser for config files, shell variables, command line args. (agpl, configuration, data, library)2016-07-05MatthiasFischmann
configuration130.0Simple data type for application configuration. (bsd3, data, library)2012-12-07HiromiIshii
configurator3862.0Configuration management (bsd3, configuration, data, library)2014-07-02BryanOSullivan
configurator-export540.0Pretty printer and exporter for configurations from the "configurator" library. (bsd3, configuration, data, library)2016-05-08jle
configurator-ng430.0The next generation of configuration management (bsd3, configuration, data, library)2016-10-31LeonSmith
configurator-pg2070.0Reduced parser for configurator-ng config files (bsd3, configuration, data, library)2020-04-19vollmert
congruence-relation170.0Decidable congruence relations for Haskell: up to you whether this is a joke (data, library, mit)2014-12-05JonSterling
connection-pool900.0Connection pool built on top of resource-pool and streaming-commons. (bsd3, data, library, network)2018-03-03PeterTrsko
constaparser420.0Parse ByteStrings of a prescribed length. (bsd3, data, library)2018-06-22chessai
constrained160.0Generalization of standard Functor, Foldable, and Traversable classes (bsd2, data, library)2019-10-27SergeyVinokurov
constrained-dynamic1450.0Dynamic typing with retained constraints (data, library, mit)2016-08-03jh3141
constrained-platform-instances60.0Instances of standard platform types for 'constrained' package. (bsd2, data, library)2019-10-27SergeyVinokurov
constraint-tuples730.0Partially applicable constraint tuples (bsd3, data, library)2019-11-24ryanglscott
construct360.0Haskell version of the Construct library for easy specification of file formats (bsd3, data, library, parsing, serialization)2020-03-08MarioBlazevic
container1320.0Containers abstraction and utilities. (apache, data, library)2018-12-18danilo2, iamrecursion
containers-deepseq (deprecated in favor of containers)130.0Provide orphan NFData instances for containers as needed. (deprecated) (bsd3, data, deprecated, library)2012-01-19MichaelSnoyman
containers-verified530.0Formally verified drop-in replacement of containers (data, library, mit)2018-06-18JoachimBreitner
context-stack280.0An abstraction of a stack and stack-based monadic context. (data, library, mit)2014-08-29thinkpad20
contiguous1680.0Unified interface for primitive arrays (array, bsd3, data, library, primitive)2019-07-23andrewthad, chessai
contiguous-checked370.0contiguous with bounds checks (bsd3, data, library)2019-01-02andrewthad
contiguous-fft620.0dft of contiguous memory structures (bsd3, data, library)2019-02-16chessai
contravariant25382.5Contravariant functors (bsd3, control, data, library)2019-06-03EdwardKmett, EricMertens, ryanglscott
control-monad-attempt (deprecated)680.0Monad transformer for attempt. (deprecated) (bsd3, data, deprecated, failure, library)2012-01-19MichaelSnoyman, NicolasPouillard
conversion500.0Universal converter between values of different types (control, conversion, data, library, mit)2016-04-12NikitaVolkov
conversion-bytestring340.0"Conversion" instances for the "bytestring" library (control, conversion, data, library, mit)2016-04-12NikitaVolkov
conversion-case-insensitive190.0"Conversion" instances for the "case-insensitive" library (control, conversion, data, library, mit)2015-04-23NikitaVolkov
conversion-text680.0"Conversion" instances for the "text" library (control, conversion, data, library, mit)2016-04-12NikitaVolkov
convert540.0Safe and unsafe data conversion utilities with strong type-level operation. checking. (apache, data, library)2018-12-18danilo2, iamrecursion
convertible5692.0Typeclasses and instances for converting between types (bsd3, data, library)2015-04-20ErikHesselink, JohnGoerzen, NicolasWu, rsoeldner
convertible-ascii210.0convertible instances for ascii (data, failure, library, public-domain)2011-12-19MasatakeDaimon
convertible-text (deprecated)2150.0Typeclasses and instances for converting between types (deprecated) (bsd3, data, deprecated, failure)2012-01-19MichaelSnoyman
coroutine-iteratee (deprecated)280.0Bridge between the monad-coroutine and iteratee packages. (concurrency, data, deprecated, library)2011-12-31MarioBlazevic
count200.0Bijective mappings between values and possibly infinite prefixes of [0..] (bsd3, data, library)2014-06-10Maxdamantus
countable870.0Countable, Searchable, Finite, Empty classes (bsd3, data, library)2016-06-22AshleyYakeley
counter662.0An object frequency counter. (data, library, mit)2017-09-04wei2912
country-codes530.0ISO 3166 country codes and i18n names. (bsd3, data, library)2019-02-12FelipeLessa, JeanPhilippeMoresmau
coya190.0Coya monoids (bsd3, data, library, math)2019-04-11chessai
cpio-conduit240.0Conduit-based CPIO (apache, data, library)2015-08-04DanAloni
cpu2442.0Cpu information and properties helpers. (bsd3, data, library)2013-11-12VincentHanquez
cqrs1340.0Command-Query Responsibility Segregation (data, library, mit)2015-09-17BardurArantsson
cqrs-core150.0Command-Query Responsibility Segregation (data, library, mit)2015-09-16BardurArantsson
cqrs-memory190.0Memory backend for the cqrs package. (data, library, mit)2015-09-16BardurArantsson
cqrs-postgresql210.0PostgreSQL backend for the cqrs package. (data, library, mit)2015-09-16BardurArantsson
cqrs-sqlite3610.0SQLite3 backend for the cqrs package. (data, library, mit)2013-03-10BardurArantsson
cqrs-test70.0Command-Query Responsibility Segregation Test Support (data, library, mit)2013-03-10BardurArantsson
cqrs-testkit80.0Command-Query Responsibility Segregation Test Support (data, library, mit)2015-09-16BardurArantsson
cqrs-types250.0Command-Query Responsibility Segregation. Modules for the basic types. (data, library, mit)2015-09-17BardurArantsson
critbit1320.0Crit-bit maps and sets (bsd3, data, library)2014-07-04BryanOSullivan
crjdt-haskell380.0A Conflict-Free Replicated JSON Datatype for Haskell (bsd3, data, library)2017-05-28amarpotghan
crypt-sha512260.0Pure Haskell implelementation for GNU SHA512 crypt algorithm (bsd3, data, library)2017-07-02phadej
crypto-api18592.0A generic interface for cryptographic operations (bsd3, cryptography, data, library)2018-01-05ThomasDuBuisson
crypto-api-tests1150.0A test framework and KATs for cryptographic operations. (bsd3, cryptography, data, library)2014-01-08ThomasDuBuisson
cryptohash15921.25collection of crypto hashes, fast, pure and practical (bsd3, cryptography, data, library)2016-03-25VincentHanquez
cryptohash-md57730.0Fast, pure and practical MD5 implementation (bsd3, cryptography, data, library)2016-06-28HerbertValerioRiedel
cryptohash-sha18080.0Fast, pure and practical SHA-1 implementation (bsd3, cryptography, data, library)2016-06-28HerbertValerioRiedel
cryptohash-sha2565382.25Fast, pure and practical SHA-256 implementation (bsd3, cryptography, data, library)2017-11-13AustinSeipp, HerbertValerioRiedel
cryptohash-sha512770.0Fast, pure and practical SHA-512 implementation (bsd3, cryptography, data, library)2016-10-23HerbertValerioRiedel
css-syntax960.0High-performance CSS tokenizer and serializer. (data, library, mit)2018-09-19wereHamster
csv-conduit2310.0A flexible, fast, conduit-based CSV parser library for Haskell. (bsd3, conduit, csv, data, library, text)2019-10-11MichaelXavier, OzgunAtaman
csv-enumerator1050.0A flexible, fast, enumerator-based CSV parser library for Haskell. (bsd3, data, library)2013-01-21OzgunAtaman
csv-table220.0Scripts for manipulating tables stored as CSV files (data, library, mit)2016-04-21ranjitjhala
cuckoo640.0Haskell Implementation of Cuckoo Filters (bsd3, data, library)2019-08-21larsk
cuckoo-filter660.0Pure and impure Cuckoo Filter (data, library, mit, program)2018-12-12ChrisCoffey
cudd1320.0Bindings to the CUDD binary decision diagrams library (bsd3, data, library)2017-01-09adamwalker
currencies1090.0Currencies representation, pretty printing and conversion (bsd3, data, library)2018-06-22alx741, DanielCampoverde
currency330.0Types representing standard and non-standard currencies (data, library)2013-09-07StephenWeber
currency-codes370.0ISO-4217 Currency Codes (data, library, mit)2018-03-19KtorZ
currency-convert422.0Typesafe currency conversion (bsd3, data, library)2016-08-16pigworts2
curry210.0Curry types (bsd3, data, library)2018-01-25
cve160.0simple and efficient cve datatype (bsd3, data, library)2018-03-21chessai
czipwith2380.0CZipWith class and deriving via TH (bsd3, data, library)2019-06-06lspitzner, fozworth, dukerutledge
d102692.0Digits 0-9 (data, library, mit)2020-06-03chris_martin, Monoid_Mary
data-accessor9330.0Utilities for accessing and manipulating fields of records (bsd3, data, library)2019-05-23HenningThielemann, LukePalmer
data-accessor-monadLib200.0Accessor functions for monadLib's monads (data, library, monads)2009-02-11RussellOConnor
data-accessor-monads-fd480.0Use Accessor to access state in monads-fd State monad class (bsd3, data, library)2011-02-26HenningThielemann
data-accessor-monads-tf650.0Use Accessor to access state in monads-tf State monad type family (bsd3, data, library)2012-04-10HenningThielemann
data-accessor-mtl1310.0Use Accessor to access state in mtl State monad class (bsd3, data, library)2014-07-01HenningThielemann
data-accessor-template3800.0Utilities for accessing and manipulating fields of records (bsd3, data, library)2018-08-31HenningThielemann, LukePalmer
data-accessor-transformers2510.0Use Accessor to access state in transformers State monad (bsd3, data, library)2016-01-18HenningThielemann
data-ascii (deprecated in favor of ascii)540.0Type-safe, bytestring-based ASCII values (bsd3, data, deprecated, library)2020-05-20chris_martin, Monoid_Mary
data-binary-ieee754 (deprecated in favor of binary, cereal)7280.0Parser/Serialiser for IEEE-754 floating-point values (data, deprecated, library, mit)2013-07-07JohnMillikin
data-bword2770.0Extra operations on binary words of fixed length (bsd3, data, library)2016-07-06MikhailVorozhtsov
data-carousel210.0A rotating sequence data structure (data, library, mit)2014-11-12JonSterling
data-cell300.0Generic cellular data representation library (bsd3, data, library)2015-07-07patrykz
data-check (deprecated)190.0Library for checking and normalization of data (e.g. from web forms) (bsd3, data, deprecated, library, web)2017-05-21mrkkrp
data-checked2490.0Type-indexed runtime-checked properties (bsd3, data, library)2014-02-09MikhailVorozhtsov
data-combinator-gen880.0Generate a special combinator from any data type. (data, library, mit)2019-05-26bolt12
data-compat710.0Define Backwards Compatibility Schemes for Arbitrary Data (data, library, mit)2020-05-28TravisWhitaker
data-constructors230.0Generically compare data by their constructors (bsd3, data, library)2017-09-16dailectic
data-cycle90.0a cyclic doubly linked list (bsd3, data, library)2012-03-10TobiasBrandt
data-default18532.25A class for types with a default value (bsd3, data, library)2016-06-25LukasMai
data-default-class15910.0A class for types with a default value (bsd3, data, library)2016-06-25LukasMai
data-default-extra500.0A class for types with a default value. (bsd3, data, library)2017-01-05PeterTrsko
data-default-generics220.0A class for types with a default value (bsd3, data, library)2014-02-20jcristovao
data-default-instances-base3930.0Default instances for types in base (bsd3, data, library)2016-06-25LukasMai
data-default-instances-bytestring380.0Default instances for (lazy and strict) ByteString, Builder and ShortByteString. (bsd3, data, library)2016-02-07PeterTrsko
data-default-instances-case-insensitive410.0Default instance for CI type from case-insensitive package. (bsd3, data, library)2016-02-07PeterTrsko
data-default-instances-containers12790.0Default instances for types in containers (bsd3, data, library)2013-04-02LukasMai
data-default-instances-dlist12130.0Default instances for types in dlist (bsd3, data, library)2013-04-02LukasMai
data-default-instances-new-base560.0Default instances for types in newer versions of base package. (bsd3, data, library)2017-01-05PeterTrsko
data-default-instances-old-locale13860.0Default instances for types in old-locale (bsd3, data, library)2013-04-03LukasMai
data-default-instances-text390.0Default instances for (lazy and strict) Text and Text Builder. (bsd3, data, library)2016-02-07PeterTrsko
data-default-instances-unordered-containers290.0Default instances for unordered-containers. (bsd3, data, library)2016-02-07PeterTrsko
data-default-instances-vector440.0Default instances for types defined in vector package (bsd3, data, library)2016-02-07PeterTrsko
data-dispersal220.0Space-efficient and privacy-preserving data dispersal algorithms. (cryptography, data, lgpl, library)2014-10-05PeterRobinson
data-diverse5050.0Extensible records and polymorphic variants. (bsd3, data, library, records)2019-11-26louispan
data-diverse-lens3110.0Isos & Lens for Data.Diverse.Many and Prisms for Data.Diverse.Which (bsd3, data, library, records)2018-06-30louispan
data-dword3710.0Stick two binary words together to get a bigger one (bsd3, data, library)2020-04-11MikhailVorozhtsov
data-easy400.0Consistent set of utility functions for Maybe, Either, List and Monoids. (bsd3, data, library)2016-07-26jcristovao
data-elf410.0Executable and Linkable Format (ELF) data structures. (bsd3, data, library)2016-07-23MikhailVorozhtsov
data-embed80.0Embed files and other binary blobs inside executables without Template Haskell. (data, library, mit, program)2016-01-01AntonEkblad
data-endian2990.0Endian-sensitive data (bsd3, data, library)2016-07-07MikhailVorozhtsov
data-extend-generic200.0Extend Haskell data or newtype like in OOP languages (bsd3, data, library)2015-12-16YLiLarry
data-filepath550.0A type safe file path data structure (bsd3, data, library)2015-02-12MaxwellSwadling, domdere
data-filter200.0Utilities for filtering (bsd2, data, library)2018-05-17boonami
data-fin600.0Finite totally ordered sets (bsd3, data, library)2014-08-16WrenThornton
data-fin-simple80.0Simple integral finite set (bsd3, data, library)2015-06-17seagull
data-fix5172.25Fixpoint data types (bsd3, data, library)2020-04-07AntonKholomiov
data-fix-cse370.0Common subexpression elimination for the fixploint types. (bsd3, data, library)2015-03-30AntonKholomiov
data-flags940.0A package for working with bit masks and flags in general. (bsd3, data, library)2017-07-29MikhailVorozhtsov
data-flagset100.0An efficient data type for sets of flags (data, library, mit)2015-07-12TobiasBrandt
data-foldapp240.0Fold function applications. Framework for variadic functions. (bsd3, data, library)2018-01-21erisco
data-function-meld290.0Map the arguments and return value of functions. (bsd3, data, library)2016-05-25erisco
data-function-tacit180.0Write functions in tacit (pointless) style using Applicative and De Bruijn index notation. (bsd3, data, library)2016-06-01erisco
data-has1322.0Simple extensible product (bsd3, data, library)2017-08-17winterland
data-hash3300.0Combinators for building fast hashing functions. (bsd3, data, library)2015-05-20DanielGorin
data-index160.0Extending the concept of indices for lists and other containers (bsd3, data, library)2018-05-11IlyaPershin
data-interval2100.0Interval datatype, interval arithmetic and interval-based containers (bsd3, data, library, math)2019-10-22MasahiroSakai, Bodigrim
data-inttrie1830.0A simple lazy, infinite trie from integers (bsd3, data, library)2018-03-31LukePalmer, ThomasDuBuisson
data-ivar510.0Write-once variables with concurrency support (bsd3, concurrency, data, library)2008-10-20GregoryCrosswhite, LukePalmer
data-json-token (deprecated)180.0Json Token datatype (bsd3, data, deprecated, json, library, program)2016-02-02newhoggy, haskellworks
data-kiln60.0Sculpt mutable recursive data with reference equality; bake it using a data kiln into an immutable lazy structure (bsd3, data, library)2014-12-17kwf
data-layout200.0Read/write arbitrary binary layouts to a "Data.Vector.Storable". (bsd3, data, library)2013-10-06JacobStanley
data-lens-light3200.0Simple lenses, minimum dependencies (data, lenses, library, mit)2016-05-26RomanCheplyaka
data-lens-template1890.0Utilities for Data.Lens (bsd3, data, library)2016-07-17EdwardKmett, JoelBurget, RussellOConnor
data-list-sequences200.0Utilities for working with sequences within lists. (data, gpl, library)2011-08-13JonasKramer
data-list-zigzag500.0A list but with a balanced enumeration of Cartesian product. (bsd3, data, library)2018-02-27erisco
data-map-multikey300.0Data.Map with multiple, unique keys (data, library, mit)2015-05-13JasonHickner
data-memocombinators2852.0Combinators for building memo tables. (bsd3, data, library)2013-12-14DmitryMalikov, LukePalmer, ThomasDuBuisson
data-msgpack (deprecated in favor of msgpack-binary)3092.0A Haskell implementation of MessagePack (bsd3, data, deprecated, library, program)2020-02-29iphydf
data-msgpack-types (deprecated in favor of msgpack-types)1290.0A Haskell implementation of MessagePack. (bsd3, data, deprecated, library)2020-02-29iphydf
data-nat220.0data Nat = Zero | Succ Nat (bsd3, data, library, math)2012-09-23GaborLehel
data-object (deprecated in favor of aeson)1400.0Represent hierachichal structures, called objects in JSON. (deprecated) (bsd3, data, deprecated, library)2012-01-18MichaelSnoyman
data-or870.0A data type for non-exclusive disjunction. (bsd3, data, library)2015-05-30WrenThornton
data-ordlist4142.25Set and bag operations on ordered lists (bsd3, data, library, list)2014-11-20LeonSmith
data-partition550.0A pure disjoint set (union find) data structure (bsd3, data, library)2015-04-03LukePalmer
data-quotientref80.0Reference cells that need two independent indices to be accessed. (bsd3, data, library)2008-10-20LukePalmer
data-ref1710.0Unify STRef and IORef in plain Haskell 98 (bsd3, data, library)2019-01-22HenningThielemann
data-reify3330.0Reify a recursive data structure into an explicit graph. (bsd3, data, language, library, parsing, reflection)2015-05-19AndyGill, ryanglscott
data-reify-cse120.0Common Sub-Expression Elimination for graphs generated by Data.Reify. (bsd3, data, language, library)2013-05-08SebastiaanVisser
data-rev300.0A typeclass for reversing order of contents. (bsd3, data, library)2015-01-01jxv
data-rope170.0Ropes, an alternative to (Byte)Strings. (data, library)2011-02-11PierreEtienneMeunier
data-serializer3120.0Common API for serialization libraries (bsd3, data, library)2019-11-01MikhailVorozhtsov
data-spacepart (deprecated in favor of spacepart)340.0Deprecated. Now called "spacepart". Space partitioning data structures. (bsd3, data, deprecated, library)2009-02-16CoreyOConnor
data-standards710.0A collection of standards representable by simple data types. (data, library, mpl)2018-07-24ageitilt
data-store630.0Type safe, in-memory dictionary with multidimensional keys. (bsd3, data, library)2013-08-19PetrPilar
data-sword680.0Shorter binary words (bsd3, data, library)2017-07-29MikhailVorozhtsov
data-tensor170.0Tensor and Group typeclasses (data, library, mit)2015-06-19TobiasDammers
data-textual3350.0Human-friendly textual representations. (bsd3, data, library, text)2019-11-01MikhailVorozhtsov
data-timeout460.064-bit timeouts of nanosecond precision (bsd3, concurrency, data, library)2018-10-22MikhailVorozhtsov
data-transform500.0Functions to transform data structures. (bsd3, data, library)2020-04-10JonasScholl
data-treify510.0Reify a recursive data structure into an explicit graph. (bsd3, data, language, library, parsing, reflection)2014-03-18ConalElliott
data-type340.0Basic type wrangling types and classes (bsd3, data, library, type-system)2011-09-23IainAlexander
data-util610.0utilities for handle data (bsd3, data, development, library, utils)2015-09-08KatsutoshiItoh
data-variant790.0A variant data type, useful for modeling dynamically-typed programming languages (bsd3, data, library)2014-07-31TobiasDammers
datasets1532.0Classical data sets for statistics and machine learning (data, data-mining, library, machine-learning, mit, statistics)2019-02-12glutamate, ocramz, stites
date-conversions420.0Date conversions (data, date, library, mit)2018-02-07joshuaclayton
dates1400.0Small library for parsing different dates formats. (bsd3, data, library)2019-06-26IlyaPortnov
datetime650.0Utilities to make Data.Time.* easier to use (data, library)2015-07-20EricSessoms, EugenyDzhurinsky, jsl, stackbuilders
datetime-sb400.0Utilities to make Data.Time.* easier to use. (data, library)2015-05-28jsl
dawg3400.0Directed acyclic word graphs (bsd3, data, data-structures, library)2013-07-22JakubWaszczuk
dawg-ord2232.0Directed acyclic word graphs (bsd3, data, data-structures, library)2017-01-09JakubWaszczuk
ddate180.0Discordian Date Types for Haskell (data, gpl, library)2016-06-30hellerve
dec5680.0Decidable propositions. (bsd3, data, dependent-types, library)2019-06-19phadej
deiko-config470.0Small and typesafe configuration library. (bsd3, data, library)2017-11-09YorickLaupa
delimited-text1110.0Parse character delimited textual data (bsd3, data, library)2011-03-23DonaldStewart, StefanKersten
delta660.0A library for detecting file changes (data, lgpl, library, program)2015-07-23muzzle
dense120.0Mutable and immutable dense multidimensional arrays (bsd3, data, library)2016-06-19cchalmers
dense-int-set260.0Dense int-set (data, library, mit)2018-10-08NikitaVolkov
dependent-hashmap430.0Dependent hash maps (bsd3, data, library)2020-03-02OlleFredriksson
dependent-map5152.5Dependent finite maps (partial dependent products) (data, dependent-types, library)2020-03-27BertramFelgenhauer, JamesCook, RyanTrinkle, abrar, 3noch
dependent-monoidal-map650.0Dependent map that uses semigroup mappend (bsd3, data, library)2019-11-26CaleGibbard, abrar
dependent-state150.0Control structure similar to Control.Monad.State, allowing multiple nested states, distinguishable by provided phantom types. (apache, data, library)2016-01-30danilo2, iamrecursion
dependent-sum6272.25Dependent sum type (data, dependent-types, library, public-domain)2020-03-25BertramFelgenhauer, JamesCook, RyanTrinkle, abrar, 3noch, DanBornside
depq2170.0Double-ended priority queues (bsd3, data, data-mining, data-structures, library)2020-05-31ocramz
derive-IG160.0Macro to derive instances for Instant-Generics using Template Haskell (bsd3, data, generics, library)2010-09-06HiromiIshii
derive-enumerable100.0Generic instances for enumerating complex data types (data, generics, gpl, library)2015-05-27mgoszcz2
derive-trie390.0Automatic derivation of Trie implementations. (bsd3, data, library)2012-02-08AndreasBaldeau
deriveJsonNoPrefix610.0Derive ToJSON/FromJSON instances in a more prefix-friendly manner. (apache, data, library)2018-07-17igrep
describe4380.0Combinators for describing binary data structures (bsd3, data, library)2020-02-08riuga
descrilo690.0Loads a list of items with fields (configuration, data, gpl, library, parser)2018-11-03mgmillani
detour-via-sci500.0JSON and CSV encoding for rationals as decimal point numbers. (csv, data, json, library, math, mpl, numeric)2018-06-22philderbeast
detour-via-uom300.0JSON and CSV encoding for quantities. (csv, data, json, library, math, mpl, numeric, physics)2018-06-22philderbeast
dgim270.0Implementation of DGIM algorithm (algorithms, data, library, mit)2015-04-04musically_ut
dice-entropy-conduit920.0Cryptographically secure n-sided dice via rejection sampling (cryptography, data, lgpl, library)2020-05-09PeterRobinson
dicom550.0A library for reading and writing DICOM files in the Explicit VR Little Endian transfer syntax. (data, gpl, library, medical)2015-12-11PhilFreeman, karchie
diff31040.0Perform a 3-way difference of documents (bsd3, data, library)2018-04-30OliverCharles
diffmap300.0diff on maps (bsd3, data, library)2018-06-18chessai
digit5132.0A data-type representing digits 0-9 and other combinations (bsd3, data, library)2019-11-20TonyMorris, qfpl
digits1440.0Converts integers to lists of digits and back. (bsd3, data, library)2016-07-08HenryBucklow
digraph1000.0Directed Graphs (bsd3, data, library, mathematics)2020-05-20larsk, fosskers
direct-binary-files130.0Serialization and deserialization monads for streams and ByteStrings. (bsd3, data, library)2012-12-10IreneKnapp
direct-murmur-hash130.0An implementation of the MurmurHash3 algorithm (bsd3, data, library)2015-02-24IreneKnapp, dmbarbour
directory-tree5282.0A simple directory-like tree datatype, with useful IO functions (bsd3, data, library, system)2016-09-05BrandonSimmons
dirfiles830.0 (bsd3, data, library)2014-09-25HugoGomes
discrete190.0replacement for enum (bsd3, data, library)2018-09-17chessai
discrete-intervals620.0Discrete Intervals (bsd3, data, library)2017-12-17chessai
discrete-space-map650.0A discrete space map. (bsd3, data, library)2016-02-13SjoerdVisscher
discrimination1522.5Fast generic linear-time sorting, joins and container construction. (bsd3, data, library, sorting)2019-06-07AnthonyCowley, EdwardKmett, GeorgeWilson
disjoint-set270.0Persistent disjoint-sets, a.k.a union-find. (bsd3, data, library)2012-10-15MaxwellSayles
disjoint-set-stateful250.0Monadic disjoint set (data, library, mit)2017-04-23clinton
diskhash2062.0Disk-based hash table (data, library, mit)2019-11-11luispedro
dlist22972.0Difference lists (bsd3, data, library)2020-04-02DonaldStewart, SeanLeather
dlist-instances3040.0Difference lists instances (bsd3, data, library)2016-07-23GregWeber, MichaelSnoyman, SeanLeather
dlist-nonempty420.0Non-empty difference lists (bsd3, data, library)2017-07-31phadej
do-list1460.0Do notation for free (bsd3, data, library, list, syntax)2016-09-19TarasSerduke
dockerfile890.0A Haskell DSL for generating Dockerfiles (data, library, mit)2018-09-14ChristopherReichert
docrecords140.0Vinyl-based records with hierarchical field names, default values and documentation (cli, data, json, library, mit, options, parsing, records)2019-10-09YvesPares
doldol330.0Flag packer & handler for flaggable data (bsd3, data, library)2019-07-22yongjoon
dot510.0Datatypes and encoding for graphviz dot files (bsd3, data, graphics, graphs, library)2019-03-15andrewthad, chessai
dotnet-timespan390.0.NET TimeSpan (bsd3, data, library)2016-03-13YorickLaupa
double-metaphone220.0Haskell bindings to a C double-metaphone implementation. (data, library)2016-03-08ChristianMarie
dson1210.0Haskell Doge Serialized Object Notation Parser (data, gpl, library)2019-05-27lcycon
dson-parsec290.0DSON parser. (data, library, mit)2014-06-23alvare
dstring1110.0Difference strings (bsd3, data, library)2012-09-23BasVanDijk
dtab1170.0Harmonix (Guitar Hero, Rock Band) DTA/DTB metadata library (bsd3, data, library, program)2020-01-27mtolly
dtd-text460.0Parse and render XML DTDs (bsd3, data, library, parsing, text, xml)2014-01-08YitzGale, M15K
dtd-types510.0Basic types for representing XML DTDs (bsd3, data, library, text, xml)2018-11-03YitzGale, M15K
dual-tree5010.0Rose trees with cached and accumulating monoidal annotations (bsd3, data, library)2019-10-20BrentYorgey, RyanYates, jeffreyrosenbluth, bergey, cchalmers
dublincore-xml-conduit1010.0XML streaming parser/renderer for the Dublin Core standard elements. (data, library, public-domain)2017-11-23koral
dwarf530.0Parser for DWARF debug format. (bsd3, data, library)2010-03-21ErikCharlebois
dwarf-el560.0Parser for DWARF debug format. (bsd3, data, library)2018-03-18EyalLotem
dynamic-graphs780.0Dynamic graph algorithms (bsd3, data, library)2019-01-23JasperVanDerJeugt
dynamic-mvector410.0A wrapper around MVector that enables pushing, popping and extending. (bsd3, data, library)2017-03-10AndrasKovacs
dynamic-object570.0Object-oriented programming with duck typing and singleton classes. (bsd3, data, library)2013-01-15TakayukiMuranushi
dynamic-state1460.0Optionally serializable dynamic state keyed by type (data, gpl, library, yi)2018-06-07DmitryIvanov, MateuszKowalczyk, fread2281, JaroReinders
edit900.0A monad for rewriting things. (bsd3, data, library)2018-09-03theindigamer
edit-distance-vector1440.0Calculate edit distances and edit scripts between vectors. (algorithms, bsd3, data, data-structures, library)2016-05-24ThomasSutton
edit-lenses250.0Symmetric, stateful edit lenses (bsd3, data, library)2012-01-27DanielWagner
edit-lenses-demo290.0Programs demoing the use of symmetric, stateful edit lenses (bsd3, data, program)2016-07-24DanielWagner
editable410.0Interactive editors for Generics (bsd2, data, library)2014-10-05MaxwellSwadling
eigen1561.5Eigen C++ library (linear algebra: matrices, sparse matrices, vectors, numerical solvers). (algebra, algorithms, bsd3, data, library, math, numeric, statistics)2018-12-11OlegSidorkin, chessai
either-both980.0Either or both (bsd3, data, library)2019-08-12MatthewFarkasDyck
either-list-functions1190.0Functions involving lists of Either (apache, data, library)2020-03-02chris_martin
either-unwrap (deprecated in favor of either)970.0Functions for probing and unwrapping values inside of Either. (bsd3, data, deprecated, library)2009-11-30GregoryCrosswhite
elerea-sdl260.0Elerea FRP wrapper for SDL (data, library)2012-12-15StephenWeber
elf1000.0An Elf parser (bsd3, data, library)2018-12-26ErikCharlebois, wangbj
elm-export-persistent220.0elm-export persistent entities (data, database, library, mit, web)2018-03-12WilliamCasarin
empty-monad330.0A container that always has no values. (bsd3, data, library)2017-02-02vadimvinnik
encode-string180.0Safe string conversion and encoding (data, library, mit, string, text)2017-03-15minad
encoding-io270.0Encoding-aware file I/O. (bsd3, data, library)2016-08-05terrorjack
endo410.0Endomorphism utilities. (bsd3, data, library)2016-02-28PeterTrsko
engineering-units420.0A numeric type for managing and automating engineering units. (bsd3, data, library)2015-10-03TomHawkins
entropy18850.0A platform independent entropy source (bsd3, cryptography, data, library)2020-04-11ThomasDuBuisson
enum-subset-generate260.0Generate an ADT being a subset of another ADT, and the corresponding mappings. (bsd3, data, library)2018-05-280xd34df00d
enum-types330.0small enum types (bsd3, data, library)2019-03-16andrewthad
enumerable520.0A typeclass for enumerating all values a type (bsd3, data, library)2009-08-16DanielPeebles
enumerate1130.0enumerate all the values in a finite type (automatically) (data, library, mit, program)2017-05-02sboo
enumeration960.0A practical API for building recursive enumeration procedures and enumerating datatypes. (bsd3, data, library, serialization, test, testing)2019-12-21emc2, Bodigrim
enumerator (deprecated)7580.0Reliable, high-performance processing with left-fold enumerators (data, deprecated, enumerator, library, mit)2013-10-13JohnMillikin
enumfun180.0Finitely represented /total/ EnumMaps (bsd3, data, library)2012-10-09LiyangHu
enummapmap730.0Map of maps using Enum types as keys (bsd3, data, data-structures, library)2014-02-01MatthewWest
enummapset-th440.0TH-generated EnumSet/EnumMap wrappers around IntSet/IntMap. (bsd3, data, library)2016-08-01LiyangHu
enumset2020.0Sets of enumeration values represented by machine words (bsd3, data, foreign, library)2019-08-13HenningThielemann
envy-extensible660.0Provides FromEnv in envy instance for Record of extensible. (bsd3, data, library, record)2020-02-04igrep
equivalence4480.0Maintaining an equivalence relation implemented as union-find using STT. (algorithms, bsd3, data, library)2019-09-09PatrickBahr
ess140.0The type-level S combinator in Haskell. (data, library, mit)2015-04-25MichaelOChurch
eths-rlp280.0Ethereum Recursive Length Prefix Encoding (contracts, data, ethereum, finance, library, mit, network)2016-12-25LogvinovLeon
euler-tour-tree760.0Euler tour trees (data, library, public-domain)2018-09-04koral
event-handlers200.0Event handlers (control, data, library, public-domain)2008-12-15JamesCook
event-list2450.0Event lists with relative or absolute time stamps (data, library)2018-02-16HenningThielemann
every-bit-counts200.0A functional pearl on encoding and decoding using question-and-answer strategies (bsd3, data, library)2010-09-27DonaldStewart
ex-pool1420.0Another fork of resource-pool, with a MonadIO and MonadCatch constraint (bsd3, data, library)2018-01-07KimAltintop
exact-pi4650.0Exact rational multiples of pi (and integer powers of pi) (data, library, mit)2018-12-14dmcclean, Bodigrim
exinst2492.0Dependent pairs and their instances. (bsd3, data, library)2020-05-10RenzoCarbonara
exinst-aeson1350.0Dependent pairs and their instances. (bsd3, data, library)2020-05-10RenzoCarbonara
exinst-bytes1340.0Dependent pairs and their instances. (bsd3, data, library)2020-05-10RenzoCarbonara
exinst-cereal590.0Dependent pairs and their instances. (bsd3, data, library)2020-05-10RenzoCarbonara
exinst-deepseq (deprecated in favor of exinst)280.0Derive instances for the `deepseq` library for your existential types. (bsd3, data, deprecated, library)2016-10-13RenzoCarbonara
exinst-hashable (deprecated in favor of exinst)490.0Derive instances for the `hashable` library for your existential types. (bsd3, data, deprecated, library)2016-10-13RenzoCarbonara
exinst-serialise600.0Dependent pairs and their instances. (bsd3, data, library)2020-05-10RenzoCarbonara
existential280.0Existential types with lens-like accessors. (data, library, mit)2016-10-28SimonHudon, bandali
explicit-constraint-lens210.0Fully-flexible polymorphic lenses, without any bizarre profunctors (data, gpl, library)2017-12-30leftaroundabout
express500.0Dynamically-typed expressions involving applications and variables. (bsd3, data, library)2020-03-29rudymatela
expressions1471.5Expressions and Formulae a la carte (bsd3, data, library, logic, math)2019-04-30jakubdaniel
expressions-z31110.0Encode and Decode expressions from Z3 ASTs (bsd3, data, library, logic, math)2019-04-30jakubdaniel
extend-record-data-th350.0TH to define a new record data type that extends the existing record data type. (bsd3, data, library)2019-07-07nakaji_dayo
extensible4490.0Extensible, efficient, optics-friendly data types and effects (bsd3, data, library, records)2020-03-14FumiakiKinoshita
extensible-data510.0Sums/products/lists/trees which can be extended in other modules (data, library, public-domain)2012-02-17AaronBlack
extensible-sp102.0light-weight, extensible sums and products over types and kinds (data, library, mit)2017-04-22jadaska
extractable-singleton740.0A functor, where the "stored" value is isomorphic to Identity (bsd3, data, library)2017-05-10athanclark
f-algebra-gen440.0Generate a special f-algebra combinator from any data type. (data, library, mit)2019-07-19bolt12
facts330.0Refined types (bsd3, data, library)2018-06-16mrkkrp
fadno-braids1690.0Braid representations in Haskell (algebra, bsd2, data, library, math)2020-01-19spopejoy
failable-list (deprecated in favor of enumerator)320.0A list-like type for lazy streams, which might terminate with an error. (bsd3, data, deprecated, error-handling, library)2009-12-07JohnMillikin
fair180.0Lists with fair choice (bsd3, data, library)2019-04-01
fair-predicates230.0Fair Predicates (data, library, public-domain)2009-03-25SebastianFischer
fake1220.0Randomly generated fake data (bsd3, data, library)2020-01-30DougBeardsley
fallible330.0 (bsd3, data, library)2020-02-13matsubara0507
familiar-reflection (deprecated)80.0Reifies arbitrary terms into types that can be reflected back into terms (bsd3, data, deprecated, library, reflection)2018-05-08
family-tree1620.0A family tree library for the Haskell programming language. (bsd3, data, genealogy, library)2015-04-16NathanVanDoorn
fast-builder1990.0Fast ByteString Builder (data, library, public-domain)2019-09-17AkioTakano
fast-digits920.0Integer-to-digits conversion. (data, gpl, library)2020-02-03Bodigrim
fast-nats500.0Natural Numbers with no overhead (data, library, mit)2016-12-24mckeankylej
fasta2360.0A simple, mindless parser for fasta files. (data, gpl, library)2017-02-13GregorySchwartz
fastsum630.0A fast open-union type suitable for 100+ contained alternatives (bsd3, data, library)2019-12-11patrick_thomson
fay-text1990.0Fay Text type represented as JavaScript strings (data, fay, library, mit, text)2015-02-11AdamBergmark
fca140.0Algo for Formal Concept Analysis (agpl, data, library)2014-07-12Rpr
fclabels13992.25First class accessor labels implemented as lenses. (bsd3, data, lenses, library)2020-05-22AdamBergmark, ErikHesselink, SebastiaanVisser
fclabels-monadlib630.0MonadLib monadic interface for the "fclabels" package. (bsd3, data, library)2012-04-03BardurArantsson
fields170.0First-class record field combinators with infix record field syntax. (bsd3, data, library)2010-08-11JussiKnuuttila
fieldwise170.0Provides Fieldwise typeclass for operations of fields of records treated as independent components. (bsd2, data, library)2014-07-18GracjanPolak
file-embed20792.25Use Template Haskell to embed file contents directly. (bsd3, data, library)2020-05-12MichaelSnoyman
file-embed-lzma630.0Use Template Haskell to embed (LZMA compressed) data. (bsd3, data, library)2018-04-05phadej
file-embed-poly (deprecated)190.0Use Template Haskell to embed file contents directly. (bsd3, data, deprecated, library)2016-08-02
filecache3270.0A cache system associating values to files. (bsd3, data, library)2018-11-23SimonMarechal
filediff1360.0Diffing and patching module (bsd3, data, library)2015-05-25bgwines
filestore8500.0Interface for versioning file stores. (bsd3, data, library)2019-11-21GwernBranwen, JohnMacFarlane
filesystem-conduit (deprecated in favor of conduit-combinators)1440.0Use system-filepath data types with conduits. (deprecated) (conduit, data, deprecated, library, mit)2014-03-20MichaelSnoyman
filesystem-trees780.0Recursively manipulate and traverse filesystems as lazy rose trees. (bsd3, data, library, system)2015-05-03AdamCurtis
filtrable950.0Class of filtrable containers (bsd3, data, library)2019-12-18MatthewFarkasDyck
fin1682.0Nat and Fin: peano naturals and finite numbers (bsd3, data, dependent-types, library, math, singletons)2019-12-13phadej
fingertree-tf180.0Generic finger-tree structure using type families. (bsd3, data, data-structures, library)2014-10-05pawel834
finitary422.0A better, more type-safe Enum. (data, gpl, library)2020-05-05koz_ross
finitary-derive710.0Flexible and easy deriving of type classes for finitary types. (data, gpl, library)2019-11-26koz_ross
finitary-optics00.0Prisms and Isos between finitary types. (data, gpl, library)2020-06-06koz_ross
finite-field1570.0Finite Fields (algebra, bsd3, data, library, math)2016-10-02MasahiroSakai
finite-typelits2672.0A type inhabited by finitely many values, indexed by type-level naturals. (bsd3, data, library)2018-07-12mniip
first-and-last200.0First and Last generalized to return up to n values (bsd3, data, library)2015-10-16andrus
first-class-patterns1162.0First class patterns and pattern matching, using type families (bsd3, data, library, pattern)2019-10-01BrentYorgey, ReinerPope, shersh, vrom911
fit470.0FIT file decoder (bsd3, data, fitness, library, parsing)2016-03-04mgiles
fitsio300.0A library for reading and writing data files in the FITS data format. (data, library, physics)2008-12-31EricSessoms
fixed-length1430.0Lists with statically known length based on non-empty package. (bsd3, data, library)2020-03-21HenningThielemann
fixed-list300.0A fixed length list type (bsd3, data, library)2015-05-10JobVranish
fixed-point (deprecated)710.0Binary fixed-point arithmetic (data, deprecated, game, library, math, mit, numerical)2011-08-27JakeMcArthur
fixed-point-vector (deprecated)200.0Unbox instances for the fixed-point package (data, deprecated, game, library, math, mit, numerical)2011-08-27JakeMcArthur
fixed-point-vector-space (deprecated)290.0vector-space instances for the fixed-point package (data, deprecated, game, library, math, mit, numerical)2011-08-27JakeMcArthur
fixed-vector6760.0Generic vectors with statically known size. (bsd3, data, library)2018-09-02AlexeyKhudyakov
fixed-vector-binary440.0Binary instances for fixed-vector (bsd3, data, library)2018-10-06AlexeyKhudyakov
fixed-vector-cborg190.0Binary instances for fixed-vector (bsd3, data, library)2018-10-06AlexeyKhudyakov
fixed-vector-cereal430.0Cereal instances for fixed-vector (bsd3, data, library)2018-10-06AlexeyKhudyakov
fixed-vector-hetero3150.0Library for working with product types generically (bsd3, data, library)2020-05-30AlexeyKhudyakov
fixedprec780.0A fixed-precision real number type (bsd3, data, library, math)2018-11-06PeterSelinger
fixfile1222.0File-backed recursive data structures. (data, lgpl, library)2017-01-07rev_null
fixpoint230.0Data types as fixpoints (bsd3, data, library)2008-10-14RomanLeshchinskiy
fixtime450.0Some fixes to the time package (bsd2, data, library)2014-11-03pharpend
flat3962.25Principled and efficient bit-oriented binary serialization. (bsd3, data, library, parsing, serialization)2020-05-24PasqualinoAssini
flat-maybe130.0Strict Maybe without space and indirection overhead (bsd3, data, library)2015-11-11AndrasKovacs
flatbuffers492.0Haskell implementation of the FlatBuffers protocol. (bsd3, data, library, network, serialization)2019-10-21dcastro
flay490.0Work generically on your datatype without knowing its shape nor its contents. (bsd3, data, generics, library)2018-05-26RenzoCarbonara
flexible-time410.0simple extension of Data.UnixTime. (data, library, mit)2015-02-25tattsun
flexiwrap190.0Flexible wrappers (bsd3, data, library)2011-09-23IainAlexander
flexiwrap-smallcheck140.0SmallCheck (Serial) instances for flexiwrap (bsd3, data, library)2011-09-23IainAlexander
flight-igc580.0A parser for IGC files. (data, library, mpl, parsing)2018-09-11philderbeast
flight-kml560.0Parsing of pilot tracklogs dumped as KML. (data, flight, geography, gps, kml, library, mpl, parsing, xml)2018-09-11philderbeast
float-binstring270.0C99 printf "%a" style formatting and parsing (bsd3, data, library, numerical)2014-07-23AntonNikishaev
floating-bits440.0Conversions between floating and integral values. (bsd3, data, library)2015-06-18JonasScholl
fmlist7340.0FoldMap lists (bsd3, data, library)2019-07-07SjoerdVisscher
focus5150.0A general abstraction for manipulating elements of container data structures (containers, data, library, mit)2019-04-04NikitaVolkov
folds1832.0Beautiful Folding (bsd3, comonads, data, enumerator, library)2019-09-27EdwardKmett, EricMertens, ryanglscott
folds-common280.0A playground of common folds for folds (data, library, mit)2014-12-30jozefg
foscam-directory770.0Foscam File format (bsd3, data, file, library)2016-11-26TonyMorris
foscam-filename390.0Foscam File format (bsd3, data, file, library, parsing)2015-11-19TonyMorris
foscam-sort610.0Foscam File format (bsd3, data, file, library, parsing, program)2016-11-26TonyMorris
fraction2250.0Fractions (bsd3, data, library)2016-07-19WolfgangJeltsch
free-functors5800.0Free functors, adjoint to functors that forget class constraints. (bsd3, category-theory, data, library, math)2018-09-24SjoerdVisscher
freq560.0Are you ready to get freaky? (data, library, mit, text)2019-04-29chessai
frontmatter850.0Parses frontmatter as used in Jekyll markdown files. (data, library, mit)2015-12-20yamadapc
fsmActions840.0Finite state machines and FSM actions (bsd3, data, library)2012-12-14AndyGimblett
fsnotify-conduit390.0Get filesystem notifications as a stream of events (conduit, data, library, mit)2018-06-04MichaelSnoyman
ftree440.0Depth-typed functor-based trees, both top-down and bottom-up (bsd3, data, library)2019-02-08ConalElliott
full-text-search1060.0In-memory full text search engine (bsd3, data, library, search, text)2017-08-31DuncanCoutts, MikolajKonarski
functional-kmp170.0KMP implemented on haskell's built-in cons-cell-based lists. (bsd3, data, library)2015-11-12mniip
functor-classes-compat440.0Data.Functor.Classes instances for core packages (bsd3, data, library)2017-03-29phadej
functor-combinators1180.0Tools for functor combinator-based program design (bsd3, data, library)2019-11-19jle
functor-combo1490.0Functor combinators with tries & zippers (bsd3, data, library)2015-05-04ConalElliott
functor-infix592.0Infix operators for mapping over compositions of functors. Lots of them. (data, library, mit)2017-04-23vi
functor-monadic450.0Monad-style combinators for functors. (apache, data, library)2015-05-17jtapolczai, jtapolczai2
functor-products250.0General functor products for various Foldable instances (bsd3, data, library)2019-10-23jle
functor-utils480.0Collection of functor utilities, providing handy operators, like generalization of (.). (apache, data, library)2018-12-18danilo2, iamrecursion
fusion (deprecated in favor of streaming)420.0Effectful streaming library based on shortcut fusion techniques (bsd3, data, deprecated, library)2015-08-12JohnWiegley
fuzzyset1460.0Fuzzy set for approximate string matching (bsd3, data, library)2019-12-22arbelos
fvars170.0Fast Mutable Vars (bsd3, data, library)2019-09-22erick
game-tree230.0Searching game trees with alpha-beta pruning (data, library)2009-03-20ColinAdams
garfield300.0TBA (bsd3, data, library)2018-11-15chessai
gather340.0An applicative for parsing unordered things, heterogenous sorting (bsd3, data, library, parsing, sorting)2020-05-12RobertHensing
gc (deprecated)592.0Poor Richard's Memory Manager (bsd3, data, deprecated, library)2019-05-02EdwardKmett, EricMertens, ryanglscott
gdiff460.0Generic diff and patch (bsd3, data, library)2014-06-27AndresLoeh, EelcoLempsink
general-prelude (deprecated)420.0Prelude replacement using generalized type classes where possible (bsd3, control, data, deprecated, library)2012-12-18JohnWiegley
generic-accessors2910.0stringly-named getters for generic data (bsd3, data, library)2018-06-28GregHorn
generic-aeson2150.0Derivation of Aeson instances using GHC generics. (bsd3, data, library)2019-03-19AdamBergmark, ErikHesselink
generic-binary340.0Generic Data.Binary derivation using GHC generics. (bsd3, data, generics, library)2011-11-12SebastiaanVisser
generic-monoid3240.0Derive monoid instances for product types. (bsd3, data, library)2018-12-12lukec
generic-storable90.0Generic implementation of Storable (bsd3, data, library)2012-05-11HideyukiTanaka
generic-trie702.0A map, where the keys may be complex structured data. (bsd3, data, library)2018-04-10EricMertens
generic-xmlpickler1800.0Generic generation of HXT XmlPickler instances using GHC Generics (bsd3, data, library, xml)2019-11-13AdamBergmark, ErikHesselink
generics-sop-lens900.0Lenses for types in generics-sop (bsd3, data, generics, library)2020-03-30phadej
genericserialize190.0Serialization library using Data.Generics (bsd3, data, library)2008-03-16GwernBranwen
genvalidity-typed-uuid430.0Generators for Phantom-Typed version of UUID (data, library, mit)2020-04-16Norfair
geo-uk400.0High precision conversion between GPS and UK Grid (bsd3, data, library)2016-11-18tolysz
geohash240.0Geohash latitudes and longitudes. (bsd3, data, library)2009-10-24MariusEriksen
geojson2100.0A thin GeoJSON Layer above the aeson library (bsd3, data, library)2020-04-03domdere, newmana
geojson-types540.0GeoJSON data types including JSON/BSON conversion. (bsd3, data, library)2016-05-16alios
ghc-compact520.0In memory storage of deeply evaluated data structure (bsd3, data, library)2017-07-23HerbertValerioRiedel
ghci-hexcalc460.0GHCi as a Hex Calculator interactive (bsd3, data, library)2019-07-20takenobut
ghcjs-promise320.0Bidirectional bidings to javascript's promise. (bsd3, data, library)2016-11-11AlejandroDuranPallares
ghost-buster440.0Existential type utilites (bsd3, data, library)2017-08-29lazersmoke
git-date550.0Bindings to the date parsing from Git. (data, gpl, library)2018-06-03StephenWeber
git-object (deprecated in favor of gitlib)310.0Git object and its parser (bsd3, data, deprecated, library)2012-01-20KazuYamamoto
global300.0Library enabling unique top-level declarations (bsd3, data, language, library, system)2014-12-02ByronJohnson
global-variables330.0Namespaced, global, and top-level mutable variables without unsafePerformIO. (bsd3, data, library, reflection)2012-03-03JeanMarieGaillourdet
gofer-prelude420.0The Gofer 2.30 standard prelude (bsd3, data, library)2011-05-09DonaldStewart
google-dictionary (deprecated)270.0Simple interface to the google.com/dictionary API (bsd3, data, deprecated, library)2014-01-23mitchellwrosen
google-mail-filters350.0Write GMail filters and output to importable XML (bsd3, data, library, web, xml)2016-03-31LiyangHu
googlepolyline302.0Google Polyline Encoder/Decoder (data, library, mit, text)2016-04-16lorne
gpcsets710.0Generalized Pitch Class Sets for Haskell. (bsd3, data, library)2009-05-14BruceMcCosa
gps5270.0For manipulating GPS coordinates and trails. (bsd3, data, library)2015-02-08ThomasDuBuisson
gps2htmlReport1420.0GPS to HTML Summary Report (bsd3, data, library, program)2012-01-29RobStewart
gpx-conduit440.0Read GPX files using conduits (bsd3, data, library)2012-08-12RyanTrinkle, ThomasDuBuisson
grapefruit-records1110.0A record system for Functional Reactive Programming (bsd3, data, frp, library, reactivity)2017-04-06WolfgangJeltsch
graph180.0Class of graphs (bsd3, data, library)2018-06-27
graph-core1410.0Fast, memory efficient and persistent graph implementation (data, library, mit)2016-02-04AlexanderThiemann, DavidLeuschner, StefanWehr
graph-utils1340.0A simple wrapper & quasi quoter for fgl. (bsd3, data, data-structures, graphs, library)2010-06-29HiromiIshii
graphbuilder270.0A declarative, monadic graph construction language for small graphs (data, library, mit)2012-10-17JosephAbrahamson
graphene970.0A minimal Graph Theory library. (data, library, mit)2014-05-255outh
graphql-w-persistent3132.0GraphQL interface middleware for (SQL) databases. (data, database, development, graphs, language, library)2020-06-02jasonsychau
greplicate540.0Generalised replicate functions (data, library)2016-02-03TonyMorris
greskell3670.0Haskell binding for Gremlin graph query language (bsd3, data, library)2020-06-06debugito
greskell-core3230.0Haskell binding for Gremlin graph query language - core data types and tools (bsd3, data, library)2020-06-06debugito
group-with1130.0Classify objects by key-generating function, like SQL GROUP BY (apache, data, library)2015-08-17ulikoehler
groupBy290.0Replacement definition of Data.List.GroupBy (data, library, mit)2018-01-30oisdk
grouped-list1410.0Grouped lists. Equal consecutive elements are grouped. (bsd3, data, library)2019-05-11DanielDiaz
groupoid (deprecated)310.0A Groupoid class (bsd3, data, deprecated, library)2009-09-27StephenTetley
groups4910.0Haskell 98 groups (algebra, bsd3, data, library, math)2017-11-22NathanVanDoorn
gstorable230.0Generic implementation of Storable (bsd3, data, library)2018-01-31
gtfs160.0The General Transit Feed Specification format (bsd3, data, library)2010-09-27KeeganMcAllister
gtfs-realtime280.0GTFS RealTime protobafs library (autogenerated from .proto file) (bsd3, data, library)2018-12-09CthulhuDen
hBDD270.0An abstraction layer for BDD libraries (data, library)2015-05-24PeterGammie
hBDD-CMUBDD170.0An FFI binding to CMU/Long's BDD library (data, library)2015-05-24PeterGammie
hBDD-CUDD320.0An FFI binding to the CUDD library (data, library)2015-05-24PeterGammie
hDFA260.0A simple library for representing and minimising DFAs. (bsd3, data, library)2012-06-15PeterGammie
hOpenPGP17520.0native Haskell implementation of OpenPGP (RFC4880) (codec, data, library, mit)2020-02-23ClintAdams
hadoop-formats250.0Read/write file formats commonly used by Hadoop. (apache, data, library)2014-10-16JacobStanley
hadoop-rpc230.0Use the Hadoop RPC interface from Haskell. (apache, data, library)2016-02-25ConradParker, JacobStanley
hadoop-tools940.0Fast command line tools for working with Hadoop. (apache, data, program)2016-02-25ConradParker, JacobStanley
halves300.0Split or combine data structures to and from halves, quarters, eighths (bsd3, data, library)2018-10-15puffnfresh
handa-data80.0This package is deprecated. It formerly contained Haskell utilities for data structures and data manipulation. (data, library, mit)2016-08-01BrianBush
handa-geodata240.0Geographic and Geometric Data (data, geography, geometry, library, mit, program)2014-04-27BrianBush
har530.0HAR spec in Haskell (bsd3, data, library)2017-04-27HaishengWu
has680.0Entity based records (bsd3, data, library)2019-03-31YusakuHashimoto
has-th190.0Template Haskell function for Has records. (bsd3, data, library)2010-11-22ChrisDone
hash462.0Hashing tools (bsd3, data, hash, library)2013-03-27EdwardKmett, EricMertens, ryanglscott
hash-tree690.0Merkle Hash Tree (bsd3, data, library)2017-10-18KazuYamamoto
hashable29861.75A class for types that can be converted to a hash value (bsd3, data, library)2019-05-10BryanOSullivan, HerbertValerioRiedel, JohanTibell, MilanStraka
hashable-extras (deprecated in favor of hashable)2270.0Higher-rank Hashable (bsd3, data, deprecated, hash, library)2016-01-17EdwardKmett
hashable-generics860.0Automatically generates Hashable instances with GHC.Generics. (bsd3, data, library)2016-05-25ClarkGaebel
hashable-orphans170.0Provides instances missing from Hashable. (bsd3, data, library)2017-04-05davean
hashable-time1460.0Hashable instances for Data.Time (bsd3, data, library)2018-09-26alkar, davew
hashabler1020.0Principled, portable & extensible hashing of data and types, including an implementation of the FNV-1a and SipHash algorithms. (bsd3, data, library)2016-11-20BrandonSimmons
hashflare270.0A library for working with HashFlare.io contracts and hashrates (bsd2, data, library)2017-01-20nbrk
hashmap (deprecated in favor of unordered-containers)4542.0Persistent containers Map and Set based on hashing. (bsd3, data, deprecated, library)2018-01-03MilanStraka, ryanglscott
hashring140.0Efficient consistent hashing. (bsd3, data, library)2012-02-08MichaelCraig
hashtables12802.5Mutable hash tables in the ST monad (bsd3, data, library)2019-08-07ErikDeCastroLopo, GregoryCollins, mgmeier
hashtables-plus (deprecated)300.0Extensions for a "hashtables" library (data, data-structures, deprecated, library, mit)2014-04-29NikitaVolkov
haskell-modbus520.0A cereal-based parser for the Modbus protocol (bsd3, data, library, network, parsing)2014-04-15JasonHickner
haskell-qrencode750.0Haskell bindings for libqrencode. (bsd3, data, library)2013-01-17JamesSanders
haskus-utils-data1200.0Haskus data utility modules (bsd3, data, library)2019-12-21SylvainHenry
haxparse470.0Readable HaxBall replays (data, library, mit, program)2013-09-18JoelTaylor
hbcd150.0Packed binary-coded decimal (BCD) serialization (data, library, mit)2012-06-20AndrewKay
hblock100.0A mutable vector that provides indexation on the datatype fields it stores (bsd3, data, library)2015-03-20HugoGomes
hdf5-lite260.0High-level bindings to the HDF5 "lite" interface (bsd3, data, library)2018-03-30ocramz
hebrew-time990.0Hebrew dates and prayer times. (data, library, mit)2019-02-17MichaelSnoyman
heckin290.0Oh heck, it's a heckin' case conversion library. (data, library, mit, text)2019-11-09maxdeviant
hedgehog-generic260.0GHC Generics automatically derived hedgehog generators (bsd3, data, development, library, testing)2019-04-17chessai
hedn610.0EDN parsing and encoding (bsd3, data, library)2020-03-21AlexanderBondarenko
hedn-functor160.0Base functor for EDN AST (bsd3, data, library)2019-03-16AlexanderBondarenko
here2710.0Here docs & interpolated strings via quasiquotation (bsd3, data, library)2018-03-01TaylorHedberg
hetero-dict1120.0Fast heterogeneous data structures (data, library, mit)2016-06-03winterland
hetero-map440.0Pure heterogeneous maps. (bsd3, data, data-structures, library)2009-01-12LukePalmer
heterogeneous-list-literals450.0Allows the use of tuples as literals for Heterogeneous collections (bsd3, data, library)2018-07-08DavidMD
heterolist180.0A heterogeneous list type (data, library, mit)2017-03-09clinton
hex1140.0Convert strings into hexadecimal and back. (bsd3, data, library)2011-10-10TaruKarttunen
hexpat-pickle-generic (deprecated)580.0Picklers 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
hexstring1340.0Fast and safe representation of a hex string (data, library, mit)2015-04-21solatis
hgeos1580.0Simple Haskell bindings to GEOS C API (data, geography, geometry, library, mit, text)2016-08-10rcook
hgrib440.0Unofficial bindings for GRIB API (data, gpl, library)2015-11-07mjakob
hierarchy1350.0Predicated traversal of generated trees (bsd3, data, library)2018-05-11JohnWiegley, dnadales
higgledy710.0Partial types as a type constructor. (data, library, mit)2019-10-21i_am_tom
hinze-streams180.0Streams and Unique Fixed Points (bsd3, data, library)2009-05-03DonaldStewart
hips170.0an IPS patcher (bsd3, data, program)2011-03-29PatrickPalka
histogram-fill2830.0Library for histograms creation. (bsd3, data, library)2018-10-06AlexeyKhudyakov
histogram-fill-binary330.0Binary instances for histogram-fill package (bsd3, data, library)2017-02-19AlexeyKhudyakov
histogram-fill-cereal440.0Binary instances for histogram-fill package (bsd3, data, library)2017-02-19AlexeyKhudyakov
hjcase (deprecated)310.0Jcase library for Haskell (data, deprecated, library, mit)2015-05-09seagreen
hjsonpointer4181.75JSON Pointer library (data, library, mit)2018-09-30seagreen
hjsonschema (deprecated)4820.0JSON Schema library (data, deprecated, library, mit)2020-05-01seagreen
hkd-delta280.0Definition of "Delta structures" for higher kinded data. (bsd3, data, library)2019-06-06trevorcook
hkd-lens140.0Generic lens/prism/traversal-kinded data. (bsd3, data, library)2019-06-04trevorcook
hlist161.25Heterogeneous list (bsd3, data, library)2018-01-25
hmatrix-csv300.0CSV encoding and decoding for hmatrix. (bsd3, data, library)2015-04-08lyzrd
hmatrix-repa730.0Adaptors for interoperability between hmatrix and repa (bsd3, data, library, math)2016-09-22VivianMcPhail
hmemdb320.0In-memory relational database (bsd3, data, database, library)2014-05-10MiguelMitrofanov
hmpfr4662.0Haskell binding to the MPFR library (bsd3, data, library, math)2018-01-16AlesBizjak, MichalKonecny
hnetcdf930.0Haskell NetCDF library (bsd3, data, library, program)2019-02-06DominicSteinitz, IanRoss
hnix4552.0Haskell implementation of the Nix language (bsd3, data, library, nix, system)2020-05-29JohnWiegley
hodatime550.0A fully featured date/time library based on Nodatime (bsd3, data, library, time)2020-02-16jason_j
hole260.0Higher kinded type removal (bsd3, data, library)2013-09-08ThomasEding
holmes480.0Tools and combinators for solving constraint problems. (data, library, mit)2020-04-03i_am_tom
homotuple420.0Homotuple, all whose elements are the same type (apache, data, library)2020-05-25kakkun61
hoodle-types810.0Data types for programs for hoodle file format (bsd3, data, library)2016-07-25IanWooKim
hopenpgp-tools5230.0hOpenPGP-based command-line tools (agpl, codec, data, program)2020-03-20ClintAdams
horizon140.0Sunrise and sunset UTC approximations from latitude and longitude coordinates (bsd3, data, library)2015-02-26intractable
hostaddress270.0Network Host Addresses (data, library, mit)2020-02-13larsk
hpc-codecov610.0Generate codecov report from hpc data (bsd3, data, library, program, test)2020-05-11AtsuroHoshino
hreader-lens640.0Optics for hreader package (data, library, mit)2017-05-31dredozubov
hs-GeoIP710.0Haskell bindings to the MaxMind GeoIPCity database via the C library (bsd3, data, library)2013-03-15OzgunAtaman
hs-blake2300.0A cryptohash-inspired library for blake2 (bsd3, data, library)2014-04-30tsuraan
hs-excelx570.0HS-Excelx provides basic read-only access to Excel 2007 and 2010 documents in XLSX format. (bsd3, data, library)2013-01-28MarkBaran
hs-multiaddr402.0Multiaddr library (apache, data, library)2018-04-25CMCDragonkai
hs-php-session830.0PHP session and values serialization (bsd3, data, library)2014-10-25elblake
hs-pkg-config280.0Create pkg-config configuration files (bsd3, data, development, library)2014-12-24PeterTrsko
hschema380.0Describe schemas for your Haskell data types. (data, lgpl, library, schema)2018-11-14alonsodomin
hschema-aeson530.0Describe schemas for your Haskell data types. (data, json, lgpl, library, schema)2018-11-14alonsodomin
hschema-prettyprinter510.0Describe schemas for your Haskell data types. (data, lgpl, library, schema, text)2018-11-14alonsodomin
hschema-quickcheck560.0Describe schemas for your Haskell data types. (data, lgpl, library, schema, testing)2018-11-14alonsodomin
hset2630.0Primitive list with elements of unique types. (bsd3, data, library)2015-10-29AlekseyUymanov
hsini1442.0ini configuration files (bsd3, configuration, data, library)2018-06-05MagnusTherning
hsndfile2750.0Haskell bindings for libsndfile (data, lgpl, library, sound)2015-09-18StefanKersten
hsndfile-storablevector290.0Haskell bindings for libsndfile (Data.StorableVector interface) (data, library, sound)2011-11-21StefanKersten
hsndfile-vector630.0Haskell bindings for libsndfile (Data.Vector interface) (data, library, sound)2011-11-21StefanKersten
htlset (deprecated in favor of htssets)190.0Heterogenous Set (bsd3, data, deprecated, library)2019-01-02kelemzol
htoml2230.0Parser for TOML files (bsd3, configuration, data, json, language, library, parser, text)2016-11-07cies
htoml-megaparsec6220.0Parser for TOML files (bsd3, configuration, data, language, library, text, toml)2018-10-08vmchale
htssets280.0Heterogenous Sets (bsd3, data, library)2019-01-03kelemzol
https-everywhere-rules290.0High-level access to HTTPS Everywhere rulesets. (data, library, mit)2014-08-24vi
https-everywhere-rules-raw80.0Low-level (i.e. XML) access to HTTPS Everywhere rulesets. (data, gpl, library)2014-08-24vi
httpspec250.0Specification of HTTP request/response generators and parsers (data, library, web)2010-10-05DavidLeuschner, StefanWehr
huffman232.0Pure Haskell implementation of the Huffman encoding algorithm (bsd3, compression, data, library)2012-02-28MaximeHenrion
hunt-searchengine190.0A search and indexing engine. (data, library, mit, text)2015-03-03alexbiehl
hunt-server340.0A search and indexing engine server. (data, mit, program, text)2015-03-01alexbiehl
hvect1460.0Simple strict heterogeneous lists (data, library, mit)2017-02-03AlexanderThiemann
hw-aeson600.0Convenience functions for Aeson (bsd3, data, json, library)2020-04-14haskellworks
hw-all140.0Demo library (bsd3, conduit, data, library)2019-11-06haskellworks
hw-balancedparens5510.0Balanced parentheses (bit, bsd3, data, data-structures, library, program, succinct-data-structures)2020-05-08newhoggy, haskellworks, GeorgeWilson
hw-bits8972.0Bit manipulation (bit, bsd3, data, library)2020-05-16newhoggy, haskellworks, GeorgeWilson
hw-conduit1460.0Conduits for tokenizing streams. (conduit, data, library, mit)2020-04-14newhoggy, haskellworks, GeorgeWilson
hw-conduit-merges340.0Additional merges and joins for Conduit (bsd3, conduit, data, library)2020-04-14haskellworks
hw-dump590.0File Dump (bit, bsd3, data, library, program)2020-04-14newhoggy, haskellworks
hw-eliasfano810.0Elias-Fano (bsd3, data, data-structures, library, program, succinct-data-structures)2020-04-14newhoggy, haskellworks
hw-excess1720.0Excess (bsd3, data, data-structures, library, succinct-data-structures)2020-04-14newhoggy, haskellworks
hw-int1300.0Additional facilities for Integers (bsd3, data, library)2020-04-26haskellworks
hw-json3962.0Memory efficient JSON parser (bsd3, data, library, program)2020-04-14newhoggy, haskellworks
hw-json-lens360.0Lens for hw-json (bsd3, data, data-structures, json, library, succinct-data-structures)2020-04-14haskellworks
hw-json-simd840.0SIMD-based JSON semi-indexer (bsd3, data, library, program)2020-04-14newhoggy, haskellworks
hw-json-simple-cursor570.0Memory efficient JSON parser (bsd3, data, library, program)2020-04-14newhoggy, haskellworks
hw-json-standard-cursor1190.0Memory efficient JSON parser (bsd3, data, library, program)2020-05-04newhoggy, haskellworks
hw-mquery1180.0Monadic query DSL (bsd3, data, library, program)2020-04-14newhoggy, haskellworks
hw-packed-vector1030.0Packed Vector (bsd3, data, library, program, vector)2020-04-14newhoggy, haskellworks
hw-parser1010.0Simple parser support (bsd3, data, library, parser)2020-04-14haskellworks
hw-prim8430.0Primitive functions and data types (bsd3, data, library)2020-04-14newhoggy, haskellworks, GeorgeWilson
hw-prim-bits430.0Primitive support for bit manipulation (bsd3, data, library, program)2017-09-08haskellworks
hw-rankselect4892.0Rank-select (bit, bsd3, data, data-structures, library, program, succinct-data-structures)2020-04-14newhoggy, haskellworks, GeorgeWilson
hw-rankselect-base1950.0Rank-select base (bit, bsd3, data, data-structures, library, succinct-data-structures)2020-04-14newhoggy, haskellworks, GeorgeWilson
hw-simd1410.0SIMD library (bit, bsd3, data, library, simd)2020-04-14haskellworks
hw-streams1620.0Primitive functions and data types (bsd3, data, library)2020-04-14newhoggy, haskellworks
hw-string-parse1510.0String parser (bit, bsd3, data, library)2017-08-26newhoggy, haskellworks, GeorgeWilson
hw-succinct3390.0Succint datastructures (conduit, data, library, mit)2016-10-24newhoggy, haskellworks
hw-uri1910.0Supports IO on URIs (bsd3, data, library, program)2020-03-12newhoggy, haskellworks
hw-vector (deprecated in favor of hw-prim)140.0Vector type with convenient typeclass instances (bsd3, data, deprecated, library)2016-10-28haskellworks
hw-xml1892.0XML parser based on succinct data structures. (bsd3, data, data-structures, library, program, succinct-data-structures, xml)2020-04-14newhoggy, haskellworks
hwsl22870.0Hashing with SL2 (data, library, mit)2017-11-03srijs
hwsl2-bytevector160.0A hashed byte-vector based on algebraic hashes and finger trees (data, library, mit)2015-07-15srijs
hwsl2-reducers190.0Semigroup and Reducer instances for Data.Hash.SL2 (data, library, mit)2015-07-03srijs
hybrid-vectors830.0Hybrid vectors e.g. Mixed Boxed/Unboxed vectors (bsd3, data, library, vector)2018-01-18EdwardKmett, ryanglscott
idempotent360.0Idempotent monoids (data, library, mit)2014-08-18alynn
identifiers850.0Numeric identifiers for values. (bsd3, data, library)2017-05-20awagner83
idna1170.0Implements IDNA (RFC 3490). (bsd3, data, library, rfc, text)2014-01-06GeorgePollard
ieee754-parser (deprecated in favor of data-binary-ieee754)200.0 (data, deprecated, library)2009-04-11JohnMillikin
implicit-params340.0Named and unnamed implicit parameters with defaults. (bsd3, data, library)2013-12-23ShaneOBrien
impossible420.0Set 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
incremental1230.0incremental update library (bsd3, data, library)2020-06-03FumiakiKinoshita
incremental-computing240.0Incremental computing (bsd3, data, library)2016-07-25WolfgangJeltsch
incremental-maps140.0Package for doing incremental computations on maps (bsd3, data, library)2016-05-25jelken
increments190.0type classes for incremental updates to data (bsd3, data, library)2015-01-07JohnLato
indexation3370.0Tools for entity indexation (data, library, mit)2018-10-08NikitaVolkov, IrinaArtemeva, OShev
indexed-list-literals2192.0Type safe indexed list literals (bsd3, data, library)2020-04-30DavidMD
indexed-profunctors5070.0Utilities for indexed profunctors (bsd3, data, lenses, library, optics, profunctors)2019-10-11AdamGundry, AndresLoeh, phadej, arybczak
indices500.0Multi-dimensional statically bounded indices. (data, library, mit)2014-12-30MikeLedger
infinite-search340.0Exhaustively searchable infinite sets. (algorithms, bsd3, data, library, monads, search)2009-01-09LukePalmer
inflist180.0An infinite list type and operations thereon. (bsd3, data, library)2012-02-05JamesFisher
ini3720.0Quick and easy configuration files in the INI format. (bsd3, configuration, data, library)2019-01-02ChrisDone, joehillen
ini-qq160.0Quasiquoter for INI (bsd3, configuration, data, library)2016-07-15kseo
initialize180.0Initialization and Deinitialization of 'Storable' values. (bsd3, data, library)2018-10-25chessai
inj550.0A class for injective (one-to-one) functions (data, library)2018-07-06int_index
inj-base610.0'Inj' instances for 'base' (bsd3, data, library)2018-07-13int_index
int-cast1350.0Checked conversions between integral types (bsd3, data, library)2018-04-03HerbertValerioRiedel
intern2852.0Efficient hash-consing for arbitrary data types (bsd3, data, data-structures, library)2018-02-24EdwardKmett, ryanglscott
interpolate3612.0String interpolation done right (data, library, mit, text)2020-06-05SimonHengel
interpolatedstring-perl62122.5QuasiQuoter for Perl6-style multi-line interpolated strings (data, library, public-domain)2019-10-15AudreyTang
interpolatedstring-qq240.0QuasiQuoter for Ruby-style multi-line interpolated strings. (bsd3, data, library)2010-07-18ErikCharlebois
interpolatedstring-qq-mwotton (deprecated in favor of interpolatedstring-qq)250.0DO NOT USE THIS. interpolatedstring-qq works now. (bsd3, data, deprecated, library)2010-07-18MarkWotton
interpolatedstring-qq2150.0QuasiQuoter for multi-line interpolated strings (bsd3, data, library)2019-05-06isovector
interpolator630.0Runtime interpolation of environment variables in records using profunctors (data, library, mit)2019-05-03asariley, dfithian
intset460.0Pure, mergeable, succinct Int sets. (bsd3, data, library)2013-12-07SamTruzjan
invariant16270.0Haskell98 invariant functors (bsd2, control, data, library)2019-05-02NicolasFrisby, ryanglscott
invertible920.0bidirectional arrows, bijective functions, and invariant functors (bsd3, composition, control, data, library)2018-04-15DylanSimon
invertible-hlist70.0invertible functions and instances for HList (bsd3, composition, control, data, library)2017-03-07DylanSimon
io-storage2420.0A key-value store in the IO monad. (bsd3, data, database, library, system)2009-08-06WillDonnelly, frasertweedale
io-streams12192.5Simple, composable, and easy-to-use stream I/O (bsd3, data, io-streams, library, network)2019-01-28DougBeardsley, GregoryCollins
io-string-like450.0Classes to handle Prelude style IO functions for different datatypes (bsd3, data, library)2018-01-14clinton
ioctl170.0Type-safe I/O control package (data, library, mit, system)2010-02-20MaciejPiechotka
ipld-cid170.0IPLD Content-IDentifiers <https://github.com/ipld/cid> (bsd3, data, library)2019-05-23KimAltintop, jkarni
irc3430.0A small library for parsing IRC messages. (bsd3, data, library, network)2014-12-16TrevorElliott
irc-fun-messages610.0Types and functions for working with the IRC protocol. (data, irc, library, network, public-domain)2016-09-05akrasner
irc-fun-types190.0Common types for IRC related packages (data, irc, library, network, public-domain)2016-09-05akrasner
ireal561.5Real numbers and intervals with relatively efficient exact arithmetic. (bsd3, data, library, math)2015-10-31sydow
is1090.0Generic pattern predicates (bsd3, data, library)2018-11-19vlopez
isbn271.5ISBN Validation and Manipulation (apache, data, library)2020-05-18charukiewicz
isevaluated550.0Check whether a value has been evaluated (data, ghc, library, mit)2012-07-23BertramFelgenhauer, SveinOveAas
iso3166-country-codes1210.0A datatype for ISO 3166 country codes (data, library)2017-02-16JonFairbairn
iso6391100.0ISO-639-1 language codes (bsd3, data, library)2015-01-25HugoGomes
iso8583-bitmaps330.0Parse and merge ISO 8583-style bitmaps (bsd3, data, library)2018-04-03IlyaPortnov
iso8601-duration230.0Types and parser for ISO8601 durations (bsd3, data, library)2018-06-23albertov
it-has740.0Automatically derivable Has instances. (bsd3, data, library)2020-05-18dnikolovv
iterIO310.0Iteratee-based IO with pipe operators (bsd3, data, enumerator, library, system)2012-04-19AmitLevy, DavidMazieres, DanielBGiffin
iteratee4530.0Iteratee-based I/O (bsd3, data, library, system)2014-05-19JohnLato
iteratee-compress1150.0Enumeratees for compressing and decompressing streams (bsd3, codec, data, library)2014-05-19JohnLato, MaciejPiechotka
iteratee-mtl (deprecated in favor of iteratee)470.0Iteratee-based I/O (bsd3, data, deprecated, library, system)2010-10-27JohnLato
iteratee-parsec780.0Package allowing parsec parser initeratee (data, library, mit, parsing)2010-11-28MaciejPiechotka
iteratee-stm190.0Concurrent iteratees using STM (bsd3, data, library)2012-04-10JohnLato
ix-shapable1090.0Reshape multi-dimensional arrays. (bsd3, data, library)2009-05-18TracyWadleigh
javaclass170.0Java class files (data, library)2016-03-07TonyMorris
jinquantities502.0Unit conversion and manipulation library. (bsd3, data, library, math, physics, program)2018-09-12Novadiscovery
joinlist (deprecated)230.0Join list - symmetric list type (bsd3, data, deprecated, library)2010-02-14StephenTetley
joint1630.0Trying to compose non-composable (bsd3, control, data, library)2020-02-15iokasimovmt
json-alt550.0Union 'alternative' or Either that has untagged JSON encoding. (bsd3, data, library, tools)2018-11-28MichalGajda
json-autotype4152.5Automatic type declaration for JSON input data (bsd3, data, library, program, tools, type-provider)2020-04-19MichalGajda, PeterSimons
json-extra700.0Utility functions to extend Aeson (bsd2, data, library)2016-11-24TobiasDammers
json-incremental-decoder160.0Incremental JSON parser with early termination and a declarative DSL (data, json, library, mit, parsing)2017-04-07NikitaVolkov
json-pointer880.0JSON Pointer parsing and interpretation utilities (data, json, library, mit, parsing)2019-01-22NikitaVolkov
json-schema2450.0Types and type classes for defining JSON schemas. (bsd3, data, library)2018-07-07AdamBergmark, ErikHesselink
json-state210.0Keep program state in JSON files. (data, database, library, public-domain)2016-01-28akrasner
json-syntax280.0High-performance JSON parser and encoder (bsd3, data, library)2020-05-01andrewthad
json-togo480.0Effectful parsing of JSON documents (data, library, mit)2015-06-27srijs
json-tokens290.0Tokenize JSON (bsd3, data, library)2019-09-30andrewthad
json2820.0Library provides support for JSON. (bsd3, data, json, library, text)2011-05-29YuriyIskra
json2-types170.0Defined JSON data types and function for renders JSON to string. (bsd3, data, json, library, text)2011-04-06YuriyIskra
jsons-to-schema110.0JSON to JSON Schema (data, json, library, mit, program, web)2017-07-30garetht
jsonschema-gen1212.0JSON Schema generator from Algebraic data type (bsd3, data, json, library, text)2017-08-29yuga
judy830.0Fast, scalable, mutable dynamic arrays, maps and hashes (bsd3, data, library)2018-04-16DonaldStewart, MarkWotton
jump80.0Nothing to see here, move along (data, library, mit)2016-03-14MichaelSnoyman
kafka310.0TBA (bsd3, data, library)2018-08-30chessai
kanji2710.0Perform 漢字検定 (Japan Kanji Aptitude Test) level analysis on Japanese Kanji (bsd3, data, library, program)2020-01-26fosskers
karakuri200.0Good stateful automata (bsd3, data, library)2013-10-21FumiakiKinoshita
katip7180.0A structured logging framework. (bsd3, data, library, logging, text)2020-03-30MichaelXavier
katip-datadog170.0Datadog scribe for the Katip logging framework (bsd3, data, library, logging, text)2019-02-14MichaelXavier
katip-elasticsearch1880.0ElasticSearch scribe for the Katip logging framework. (bsd3, data, library, logging, text)2019-02-14MichaelXavier
katip-logzio430.0Logz.IO scribe for the Katip logging framework (bsd3, data, library, logging, text)2019-03-06MichaelXavier
katydid1450.0A haskell implementation of Katydid (bsd3, data, library, program)2018-09-10awalterschulze
kd-tree200.0A simple k-d tree implementation (bsd3, data, library)2014-07-25BenGamari
kdt1610.0Fast and flexible k-d trees for various types of point queries. (data, library, mit)2016-03-22giogadi
keyed210.0Generic indexing for many data structures (bsd3, data, library)2015-08-13wyager
keyword-args620.0Extract data from a keyword-args config file format (data, library, mit, program)2015-04-23jsl, stackbuilders, sestrella
kicad-data1082.0Parser and writer for KiCad files. (data, library, mit)2018-01-04kasbah
kickchan280.0Kick Channels: bounded channels with non-blocking writes (bsd3, concurrency, data, library)2014-02-06JohnLato
kind-apply920.0Utilities to work with lists of types (bsd3, data, library)2019-09-04AlejandroSerrano
kind-generics1390.0Generic programming in GHC style for arbitrary kinds and GADTs. (bsd3, data, library)2020-05-03AlejandroSerrano
kind-generics-th1300.0Template Haskell support for generating `GenericK` instances (bsd3, data, library)2020-05-03AlejandroSerrano
kleene-list210.0A list type based on the Kleene star and plus. (data, library)2020-05-02oisdk
kontra-config250.0JSON config file parsing based on unjson (bsd3, data, library)2016-09-21GracjanPolak, MikhailGlushenkov, jonathanjouty_scrive
lambda-sampler120.0Boltzmann sampler utilities for lambda calculus. (bsd3, data, library)2017-08-13mbendkowski
language-conf410.0Conf parsers and pretty-printers for the Haskell programming language. (data, library, mit)2016-08-24yamadapc
language-hcl310.0HCL parsers and pretty-printers for the Haskell programming language. (data, library, mit)2016-08-12yamadapc
laop3220.0Matrix programming library (bsd3, data, library, mit)2020-06-05bolt12
largeword3340.0Provides Word128, Word192 and Word256 and a way of producing other large words if required. (bsd3, data, library)2015-12-13DominicSteinitz
layered-state390.0Control structure similar to Control.Monad.State, allowing multiple nested states, distinguishable by provided phantom types. (apache, data, library)2018-12-18danilo2, iamrecursion
layouting220.0General 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-hash140.0Identifiers for not-yet-computed values (data, gpl, library)2017-07-24leftaroundabout
lazy-hash-cache180.0Storing computed values for re-use when the same program runs again. (data, gpl, library)2017-07-24leftaroundabout
lazy-priority-queue280.0Lazy-Spined Monadic Priority Queues (bsd3, control, data, library, program)2019-09-19MarioBlazevic
lazyarray380.0Efficient implementation of lazy monolithic arrays (lazy in indexes). (bsd3, data, library)2008-02-19MilanStraka
lazyset220.0Set and Map from lazy/infinite lists. (data, library, mit)2016-12-15carlos_freund
lens69533.0Lenses, Folds and Traversals (bsd2, data, generics, lenses, library)2020-04-15EdwardKmett, EricMertens, JohnWiegley, ryanglscott
lens-accelerate350.0Instances to mix lens with accelerate (bsd3, data, lenses, library)2018-04-04TrevorMcDonell
lens-action1140.0Monadic Getters and Folds (bsd3, data, generics, lenses, library)2019-09-13EdwardKmett, EricMertens, ryanglscott
lens-core1190.0Lenses, Folds and Traversals (bsd2, data, generics, lenses, library)2020-01-23MatthewFarkasDyck
lens-datetime1152.0Lenses for Data.Time.* types (bsd3, data, lenses, library)2016-04-29GergelyRisko, MihalyBarasz
lens-family6351.75Lens Families (bsd3, data, lenses, library)2020-02-16RussellOConnor
lens-family-core9100.0Haskell 2022 Lens Families (bsd3, data, lenses, library)2020-02-16RussellOConnor
lens-family-th3880.0Generate lens-family style lenses (bsd3, data, library)2020-05-21DanBurton
lens-labels (deprecated in favor of proto-lens)1020.0Integration of lenses with OverloadedLabels. (bsd3, data, deprecated, library)2018-10-12JudahJacobson, gnezdo
lens-properties620.0QuickCheck properties for lens (bsd3, data, lenses, library)2018-01-09EdwardKmett, EricMertens, ryanglscott
lens-th-rewrite310.0Rewrites Template Haskell splices using the API (bsd3, data, library, program)2020-04-05DavidJohnson
lens-time150.0lens for Data.Time (data, library, mit)2013-08-14TatsuyaTouma
lens-utils650.0Collection of missing lens utilities. (apache, data, library)2018-12-18danilo2, iamrecursion
lenses1450.0Simple Functional Lenses (bsd3, data, library)2018-07-12JobVranish
lensref650.0References which can be joined and on which lenses can be applied (bsd3, control, data, library)2014-05-18PeterDivianszky
lenz2560.0Van Laarhoven lenses (bsd3, data, lenses, library)2020-01-16MatthewFarkasDyck
lenz-mtl290.0mtl operations with Van Laarhoven lenses (control, data, lenses, library)2019-10-25MatthewFarkasDyck
lenz-template740.0Van Laarhoven lens templates (data, lenses, library, template-haskell)2017-11-15MatthewFarkasDyck
lhae (deprecated)270.0Simple spreadsheet program (data, deprecated, program)2010-09-28AlexanderBau
lhe860.0Parser and writer for Les-Houches event files (data, library, mit, physics)2012-02-13ScottLawrence
librdkafka150.0TBA (bsd3, data, library)2019-05-17chessai
libroman362.0Use Roman Numerals as a Numeric Datatype (sort of) (bsd3, data, library, math, numerical)2016-10-10ahakki
line-size200.0Display the number of bytes of each line (data, gpl, program)2017-03-27AlanHawkins
linear-accelerate2000.0Lifting linear vector spaces into Accelerate (algebra, bsd3, compilers-interpreters, concurrency, data, library, math, parallelism)2018-04-04EdwardKmett, TrevorMcDonell, ryanglscott
linear-maps350.0Finite maps for linear use (bsd3, data, library, program)2009-05-28PeterDivianszky, ZsoltDollenstein
lingo840.0File extension based programming language detection (bsd3, data, library)2020-03-06patrick_thomson, tclem
link-relations290.0Use web link relation types (RFC 5988) in Haskell (data, library, public-domain, web)2016-01-28akrasner
linkedhashmap510.0Persistent LinkedHashMap data structure (bsd3, data, library)2015-02-07abasko
list-fusion-probe2110.0testing list fusion for success (bsd3, data, library)2018-08-02JoachimBreitner
list-grouping (deprecated in favor of split)180.0Functions for grouping a list into sublists (bsd3, data, deprecated, library)2011-02-13BrandonSimmons
list-singleton1162.0Easily and clearly create lists with only one element in them. (data, library)2020-06-02fozworth
list-tries4520.0Tries and Patricia tries: finite sets and maps for list keys (bsd3, data, data-structures, library)2020-05-12MattiNiemenmaa, arybczak
list-tuple540.0List-like operations for tuples (apache, data, library)2020-05-25kakkun61
list-zip-def570.0Provides zips with default values. (data, library, public-domain)2018-12-19muesli4
list-zipper670.0A list zipper (bsd3, data, library)2018-12-09qfpl
lists860.0Functions for dealing with lists (bsd3, data, library)2013-10-10ChrisDone
listsafe640.0Safe wrappers for partial list functions, supporting MonadThrow. (apache, data, library, list, safe)2015-05-13jtapolczai, jtapolczai2
literals160.0Non-overloaded functions for concrete literals. (data, library, mit)2013-03-30JulianFleischer
llrbtree460.0Purely functional sets and heaps (bsd3, data, library)2012-01-31KazuYamamoto
llvm-base-types210.0The base types for a mostly pure Haskell LLVM analysis library (bsd3, data, library)2013-11-12TristanRavitch
llvm-data-interop170.0A low-level data interoperability binding for LLVM (bsd3, data, library)2013-11-12TristanRavitch
lockfree-queue1720.0Michael and Scott lock-free queues. (bsd3, concurrent, data, library)2015-02-06RyanNewton, ryanglscott, peter_fogg
log-utils550.0Utils for working with logs (bsd3, data, program)2017-07-21MikhailGlushenkov, arybczak, jonathanjouty_scrive
logfloat3320.0Log-domain floating point numbers (bsd3, data, library, math, natural-language-processing, statistics)2015-10-02WrenThornton
longboi280.0Dependently-typed linked list implementation (data, library, mit)2018-01-16chessai
lookup-tables440.0Statically generate lookup tables using Template Haskell. (data, library)2015-08-31JakeMcArthur
lrucache5412.0a simple, pure LRU cache (bsd3, data, library)2018-11-29CarlHowells
lub1490.0information operators: least upper bound (lub) and greatest lower bound (glb) (bsd3, concurrency, data, library, other)2012-02-06ConalElliott
luhn200.0An implementation of Luhn's check digit algorithm. (bsd3, data, library)2009-12-20HenryBucklow
lz4-bytes310.0Bindings to LZ4 (bsd3, data, library)2020-03-09andrewthad
machines-attoparsec280.0Parse machines streams with attoparsec parsers. (bsd3, control, data, enumerator, library, parsing, text)2019-01-31davean
machines-encoding150.0Transcode encodings with machines. (bsd3, control, data, enumerator, library, text)2019-01-31davean
macho990.0Parser for Mach-O object format. (bsd3, data, library)2010-03-25ErikCharlebois
magma1720.0magma is an algebraic structure. (algebra, bsd3, data, data-structures, library, math)2020-05-11KatsutoshiItoh
make-monofoldable-foldable180.0Make a MonoFoldable type into an ordinary Foldable type. (data, library, mit)2017-03-10clinton
markov210.0Simple interpreter for Markov's normal algorithms (bsd3, data, library)2010-06-14IlyaPortnov
markup860.0Abstraction for HTML-embedded content (bsd3, data, library, web)2018-04-11athanclark
mason830.0Fast and extensible bytestring builder (bsd3, data, library)2020-06-03FumiakiKinoshita
massiv9582.5Massiv (Массив) is an Array Library. (bsd3, data, data-structures, library, parallelism)2020-05-08lehins
massiv-io2912.0Import/export of Image files into massiv Arrays (bsd3, data, data-structures, library)2020-03-04lehins
massiv-test1060.0Library that contains generators, properties and tests for Massiv Array Library. (bsd3, data, data-structures, library, parallelism)2020-02-16lehins
math-interpolate110.0Class for interpolation of values (bsd3, data, library)2019-05-04ThomasEding
math-metric160.0Typeclass for metric spaces (bsd3, data, library)2019-05-04ThomasEding
matrices2260.0native matrix based on vector (bsd3, data, library)2018-12-21kaizhang
maybe-justify180.0Simple higher order function for Maybe (data, library, public-domain)2015-06-24taksuyu
mbox872.0Read and write standard mailbox files. (bsd3, data, library, system, text)2017-08-16GershomBazerman
means210.0calculate varieties of mean/average using semigroup. (data, library, mit)2016-06-13winterland
mech190.0mecha are the most complex composite machines known to humanity, lets build them well! (bsd2, concurrency, control, data, library, network, system)2016-08-11CarterSchonwald
mechs110.0mecha are the most complex composite machines known to humanity, lets build them well! (bsd2, concurrency, control, data, library, network, system)2016-08-11CarterSchonwald
medea1410.0A schema language for JSON. (data, library, mit)2020-05-19koz_ross
median-stream1640.0Constant-time queries for the median of a stream of numeric data. (bsd3, data, library)2016-11-24jmc41493
meep1090.0A silly container (bsd2, data, library)2018-08-04DmitryMalikov, MatveyAksenov
memis60.0Memis Efficient Manual Image Sorting (data, mit, program)2017-02-01johannesgerer
memoize1500.0A memoization library (bsd3, data, library)2016-09-03JesseTov
memorable-bits210.0Generate human memorable strings from binary data. (bsd2, data, library)2019-03-11lukec
merkle-log210.0Merkle Tree Logs (bsd3, data, library)2019-05-28larsk
messagepack2880.0Serialize instance for Message Pack Object (data, library, mit)2016-12-01rodrigosetti, saep
meta-misc300.0Utility library providing miscellaneous meta-programming utilities. (bsd3, data, generics, language, library, utility)2014-12-02ByronJohnson
metadata1740.0metadata library for semantic web (bsd3, data, library, text, web)2016-03-25KatsutoshiItoh
metar690.0Australian METAR (aviation, bsd3, data, library, program)2019-04-12TonyMorris, qfpl
metar-http410.0HTTP for METAR (aviation, bsd3, data, library, program)2019-02-07TonyMorris
metric110.0Metric spaces. (data, library, mit)2014-05-30vi, SimonAlling
metrics990.0High-performance application metric tracking (data, library, mit)2017-08-09IanDuncan
mgeneric410.0Generics with multiple parameters (data, library, mit)2015-03-21rbocquet
microlens21172.5A tiny lens library with no dependencies (bsd3, data, lenses, library)2019-07-05Artyom
microlens-contra940.0True folds and getters for microlens (bsd3, data, lenses, library)2018-10-01Artyom
microlens-each (deprecated in favor of microlens)150.0'each' for microlens (bsd3, data, deprecated, lenses, library)2015-04-19Artyom
microlens-ghc8452.0microlens + array, bytestring, containers, transformers (bsd3, data, lenses, library)2020-01-29Artyom
microlens-mtl9420.0microlens support for Reader/Writer/State from mtl (bsd3, data, lenses, library)2019-06-20Artyom
microlens-platform9780.0microlens + all batteries included (best for apps) (bsd3, data, lenses, library)2020-01-29Artyom
microlens-th14700.0Automatic generation of record lenses for microlens (bsd3, data, lenses, library)2020-04-14Artyom
minecraft130.0TBA (bsd3, data, library)2019-07-11chessai, goolord
mini-egison2220.0Template Haskell Implementation of Egison Pattern Matching (data, library, mit, pattern, program)2020-03-04SatoshiEgi
minilens642.0A minimalistic lens library, providing only the simplest, most basic lens functionality. (data, gpl, lens, library)2016-05-31RaminHonary
minlen90.0Express the minimum length of a container in its type (data, library, mit)2016-07-04MichaelSnoyman
minst-idx (deprecated in favor of mnist-idx)562.0Read 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)150.0Monadic List alternative to lazy I/O (bsd3, data, deprecated, library)2009-05-02EyalLotem
mmsyn53790.0Various additional operations on lists (some with intermediate Monads) (data, library, lists, mit)2020-05-14OleksandrZhabenko
mnist-idx690.0Read and write IDX data that is used in e.g. the MNIST database. (data, lgpl, library)2017-03-27muzzle
model2270.0Derive a model of a data type using Generics (bsd3, data, generics, library, reflection)2019-05-29PasqualinoAssini
monad-branch300.0Monadic abstraction for computations that can be branched and run independently. (apache, data, library)2018-12-18danilo2, iamrecursion
monad-primitive650.0Type class for monad transformers stack with pirimitive base monad. (bsd3, data, library)2013-03-01AlexeyKhudyakov
monad-state310.0Utility library for monads, particularly those involving state. (bsd3, control, data, library, monads)2014-12-02ByronJohnson
monad-statevar80.0Concise, overloaded accessors for IORef, STRef, TVar (bsd3, data, library)2013-02-11JoeyAdams
monad-supply920.0Stateful supply monad. (control, data, library, mit, monads)2018-04-03GeoffHulette
mono-foldable (deprecated in favor of mono-traversable)300.0Folds for monomorphic containers (bsd3, data, deprecated, library)2013-09-11JohnLato
mono-traversable20652.0Type classes for mapping, folding, and traversing monomorphic containers (data, library, mit)2019-12-25GregWeber, MichaelSnoyman
mono-traversable-instances1950.0Extra typeclass instances for mono-traversable (data, library, mit)2016-07-04MichaelSnoyman
mono-traversable-keys320.0Type-classes for interacting with monomorphic containers with a key (bsd3, containers, data, data-structures, library)2019-01-30recursion_ninja
mono-traversable-wrapper320.0Wrapper providing Foldable instance for MonoFoldables. (data, library, mit)2017-02-26oisdk
monoid180.0Monoid 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-extras7700.0Various extra monoid-related definitions and utilities (bsd3, data, library)2019-10-20BrentYorgey, RyanYates, jeffreyrosenbluth, bergey
monoid-record200.0Support for modifying record fields of monoidal type (bsd3, data, library)2009-04-20RobinGreen
monoid-subclasses10582.0Subclasses of Monoid (algebra, bsd3, data, library, text)2020-01-22MarioBlazevic
monoid-transformer1420.0Monoid counterparts to some ubiquitous monad transformers (bsd3, data, library)2018-02-16HenningThielemann
monoidal-containers6020.0Containers with monoidal accumulation (bsd3, data, library)2019-11-26BenGamari, abrar
monoidplus190.0Extra classes/functions about monoids (data, library, math, public-domain)2011-11-12AaronBlack
monoids (deprecated in favor of reducers)2310.0Deprecated: Use 'reducers' (bsd3, data, deprecated, library, math, numerical)2012-02-09DanielWagner, EdwardKmett
monomorphic (deprecated in favor of singletons)970.0Library to convert polymorphic datatypes to/from its monomorphic represetation (bsd3, data, deprecated, library)2015-05-19HiromiIshii
months330.0Month, YearMonth, Quarter, YearQuarter types (bsd3, data, library, time)2019-11-06phadej
monus280.0a 'Monus' is a commutative monoid that allows a notion of substraction. (bsd3, data, library)2018-10-19chessai
morphisms250.0It's all about functions (control, data, library, mit)2019-01-04iokasimovmt
morphisms-functors1030.0Functors, theirs compositions and transformations (control, data, library, mit)2019-01-15iokasimovmt
morphisms-functors-inventory150.0Inventory is state and store (control, data, library, mit)2019-01-12iokasimovmt
morphisms-objects880.0Algebraic structures (control, data, library, mit)2019-01-08iokasimovmt
mrm120.0Modular Refiable Matching, first-class matches (bsd3, data, library)2016-03-07suhorng
msgpack2530.0A Haskell implementation of MessagePack (bsd3, data, library)2019-03-27HerbertValerioRiedel, HideyukiTanaka
msgpack-aeson190.0Aeson adapter for MessagePack (bsd3, data, library)2015-04-04HerbertValerioRiedel, HideyukiTanaka
msgpack-binary180.0A Haskell implementation of MessagePack (bsd3, data, library, program)2020-03-26iphydf
msgpack-rpc-conduit70.0A MessagePack-RPC Implementation (bsd3, data, library)2020-03-26iphydf
msgpack-types180.0A Haskell implementation of MessagePack. (bsd3, data, library)2020-03-26iphydf
mtree110.0Tree with Meta and Content parameters (data, library, public-domain)2011-09-17RahulGopinath
multi-trie160.0Trie of sets, as a model for compound names having multiple values (data, library, mit)2016-11-07vadimvinnik
multibase570.0Self-identifying base encodings, implementation of <https://github.com/multiformats/multihash> (bsd3, data, library)2020-06-05KimAltintop, jkarni
multihash432.0Multihash library and CLI executable (bsd3, data, library, program)2015-08-21LukeHoersten
multihash-cryptonite390.0Self-identifying hashes, implementation of <https://github.com/multiformats/multihash> (bsd3, data, library)2019-05-23KimAltintop, jkarni
multihashmap80.0hashmap from keys to hashsets (bsd3, data, library)2018-06-13chessai
multipart-names200.0Handling of multipart names in various casing styles (bsd3, data, library)2015-04-02nedervold
multirec-binary200.0Generic Data.Binary instances using MultiRec. (bsd3, data, generics, library)2009-05-25SebastiaanVisser
multivector280.0Vectors of packed tuples (bsd3, data, library)2018-05-05MatthewFarkasDyck
murmur-hash4120.0MurmurHash2 implementation for Haskell. (bsd3, data, digest, library)2016-05-01ThomasSchilling
murmur31430.0Pure Haskell implementation of the MurmurHash3 x86_32 algorithm. (data, hash, library, murmur, public-domain)2016-08-02PhilippeLaprade
murmurhash3130.032-bit non-cryptographic hashing (data, digest, library, public-domain)2011-06-22NisWegmann
mutable390.0Automatic piecewise-mutable references for your types (bsd3, data, library)2020-02-11jle
mutable-containers4690.0Abstactions and concrete implementations of mutable containers (data, library, mit)2018-02-02MichaelSnoyman
mutable-iter (deprecated)740.0iteratees based upon mutable buffers (bsd3, data, deprecated, library)2011-04-30JohnLato
mutable-lens1360.0Interoperate mutable references with regular lens (apache, data, generics, lenses, library)2020-05-29infinity0
mwc-random-accelerate310.0Generate Accelerate arrays filled with high quality pseudorandom numbers (bsd3, data, library)2017-03-31TrevorMcDonell
mx-state-codes250.0ISO 3166-2:MX State Codes and Names (bsd3, data, library)2019-11-22lysergia
n-ary-functor490.0An n-ary version of Functor (data, library, public-domain)2020-01-25gelisam
nagios-perfdata440.0Parse Nagios performance data. (bsd3, data, library)2015-01-25fractalcat
named-records1240.0Flexible records with named fields. (data, library, mit, records)2013-05-26JulianFleischer
named-sop900.0Dependently-typed sums and products, tagged by field name (data, library, mit)2020-02-20sjsch
names600.0Type level names. (data, library, mit, type-system)2013-04-02JulianFleischer
namespace1830.0A Generic Haskell library for managing namespaces (bsd3, data, library)2019-01-17xuhao
nat420.0Lazy binary natural numbers (bsd3, data, library, math)2012-08-13JanChristiansen
natural-number180.0Natural numbers tagged with a type-level representation of the number. (bsd3, data, library, type-system)2010-10-14GregoryCrosswhite
natural-numbers1590.0Natural numbers (bsd3, data, library, math)2012-07-13WolfgangJeltsch
naturals80.0Constructors and related functions for natural numbers (bsd3, data, library)2011-08-09ChristopherHoward, infrared
nbt1710.0A parser/serializer for Minecraft's Named Binary Tag (NBT) data format. (bsd3, data, library)2018-01-22AdamFoltzer
ndjson-conduit1380.0Conduit-based parsing and serialization for newline delimited JSON. (data, library, mit)2016-09-15srijs
neither (deprecated in favor of either, monad-control)1000.0Provide versions of Either with good monad and applicative instances. (deprecated) (bsd3, data, deprecated, library)2012-05-14MichaelSnoyman
nested-sequence320.0List-like data structures with O(log(n)) random access (bsd3, data, data-structures, library)2016-07-09BalazsKomuves
nestedmap300.0A library for nested maps (bsd3, data, library)2015-06-09kirstin
network-address210.0IP data structures and textual representation (data, library, mit, network)2011-09-07SebastianNowicki
network-conduit (deprecated in favor of conduit-extra)8050.0Stream socket data using conduits. (deprecated) (bsd3, conduit, data, deprecated, library, network)2014-04-02MichaelSnoyman
network-data1590.0Library for network data structures and their serialization. (bsd3, data, library, network)2015-05-18ThomasDuBuisson
network-enumerator (deprecated)770.0Enumerators for network sockets (data, deprecated, enumerator, library, mit)2012-11-25JohnMillikin
network-msgpack-rpc (deprecated in favor of msgpack-rpc-conduit)750.0A MessagePack-RPC Implementation (bsd3, data, deprecated, library)2020-03-08iphydf
network-stream180.0ByteString and Text streams for networking (data, gpl, library)2011-11-08JaredHance
newtype-zoo390.0Newtype Wrapper Zoo (bsd3, data, library)2019-09-27SvenHeyll
nextstep-plist70.0NextStep style plist parser and printer (bsd3, data, library, parsing)2012-09-30JanChristiansen
nf1200.0NF data type to statically enforce normal form (bsd3, data, library)2015-05-02EdwardYang
ngrams-loader300.0Ngrams loader based on http://www.ngrams.info format (data, library, mit, program)2014-03-25YorickLaupa
niagra922.0High performance CSS EDSL (data, library, mit)2017-04-12natesymer
no-value290.0A type class for choosing sentinel-like values (bsd3, data, library)2019-07-28ChrisDornan
non-empty3850.0List-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)880.0Non-empty sequence (bsd3, data, deprecated, library)2019-11-13OmariNorman
non-empty-text310.0Non empty Data.Text type (data, library, nonempty, text)2018-02-16acatton
non-empty-zipper1152.0The Zipper for NonEmpty (bsd3, data, library)2018-06-07fresheyeball
nonempty-alternative280.0NonEmpty for Alternative types (bsd3, data, library)2016-03-16guaraqe
nonempty-lift280.0nonempty structure (bsd3, data, library)2019-08-13chessai
nonempty-vector4620.0Non-empty vectors (bsd3, data, library)2020-05-30topos
normalization-insensitive790.0Normalization insensitive string comparison (bsd3, data, library, text, unicode)2017-08-03harendra, ppelleti
notzero2910.0A data type for representing numeric values, except zero. (bsd3, data, library, numeric)2018-05-31TonyMorris, qfpl
ntype310.0N-ary sum/product types (bsd3, data, library)2018-08-27int_index
num-non-negative240.0Non-negative numbers (data, library)2019-01-26int_index
number-length590.0Number of digits in a number in decimal and hexadecimal representation. (bsd3, data, library)2018-04-15PeterTrsko
numbered-semigroups310.0A sequence of semigroups, for composing stuff in multiple spatial directions. (data, lgpl, library)2017-10-27leftaroundabout
numbering230.0Combinators for creating bijections from some type to the natural numbers. (bsd3, data, library)2012-03-10DanielSchuessler
numbers2592.0Various number types (bsd3, data, library, math)2018-05-14CarterSchonwald, DanBurton, DanielWagner, JohnWiegley, LennartAugustsson, RichardSmith, RussellOConnor
objectid160.0Rather unique identifier for things that need to be stored (bsd3, data, library)2014-10-05tsuraan
observable-sharing1952.0Simple observable sharing (bsd3, data, library)2015-10-13mararon
oi1330.0Library for purely functional lazy interactions with the outer world. (bsd3, data, library, program)2016-03-27NobuoYamashita
once1240.0memoization for IO actions and functions (data, gpl, library)2018-12-01DmitryBogatov, KAction
oneOfN290.0Anonymous coproduct type (data, library, public-domain)2011-08-10JamesCook
oneormore550.0A never-empty list type. (data, library, mit)2014-08-04thinkpad20
onpartitions70.0partition lenses (bsd3, data, library)2017-07-05PaoloVeronelli
oo-prototypes760.0Support for OO-like prototypes (data, gpl, library)2014-08-25DmitryIvanov, MateuszKowalczyk
open-adt360.0Open algebraic data types. (bsd3, data, library)2018-11-25Woehr
open-adt-tutorial300.0Open algebraic data type examples. (bsd3, data, library, program)2018-11-25Woehr
open-union650.0Extensible, type-safe unions. (data, library, mit, program)2018-04-20BenFoppa
open-witness440.0open witnesses (bsd3, data, library)2017-08-02AshleyYakeley
opench-meteo1130.0A Haskell implementation of the Swiss Meteo Net data API (bsd3, data, library)2019-04-06RolandSenn
openexchangerates170.0Fetch exchange rates from OpenExchangeRates.org (data, library)2013-09-07StephenWeber
openpgp820.0Implementation of the OpenPGP message format (data, library)2013-08-10StephenWeber
openpgp-asciiarmor920.0OpenPGP (RFC4880) ASCII Armor codec (codec, data, library, mit)2019-06-30ClintAdams
optics1482.5Optics as an abstract interface (bsd3, data, lenses, library, optics)2020-04-15AdamGundry, AndresLoeh, phadej, arybczak
optics-core5782.0Optics as an abstract interface: core definitions (bsd3, data, lenses, library, optics)2020-04-15AdamGundry, AndresLoeh, phadej, arybczak
optics-extra4442.0Extra utilities and instances for optics-core (bsd3, data, lenses, library, optics)2020-04-15AdamGundry, AndresLoeh, phadej, arybczak
optics-th3330.0Optics construction using TemplateHaskell (bsd3, data, lenses, library, optics)2020-04-15AdamGundry, AndresLoeh, phadej, arybczak
optics-vl800.0Utilities for compatibility with van Laarhoven optics (bsd3, data, lenses, library, optics)2020-04-15AdamGundry, AndresLoeh, phadej, arybczak
optimal-blocks270.0Optimal Block boundary determination for rsync-like behaviours (bsd3, data, library, program)2015-04-07tsuraan
option180.0A strict version of Maybe (data, library, mit)2016-01-02georgerogers42
optional-args3400.0Optional function arguments (bsd3, data, library)2018-02-14GabrielGonzalez
ord-adhoc190.0Creating Ord instances instantly (bsd3, data, library)2013-02-01FumiakiKinoshita
order-maintenance1510.0Algorithms for the order maintenance problem with a safe interface (bsd3, data, library)2017-01-06WolfgangJeltsch
order-statistic-tree560.0Order statistic trees based on weight-balanced trees (bsd3, data, library)2018-11-02MZiatdinov
ordered-containers2570.0Set- and Map-like types that remember the order elements were inserted (bsd3, data, library)2019-07-05DanielWagner
orders190.0basic orders (bsd3, data, library)2013-08-02DavidDarais
oref150.0Owned references in the Ownership Monad (bsd3, data, library)2020-04-13mcgirr
org-mode260.0Parser for Emacs org-mode files. (bsd3, data, library)2020-03-13fosskers
orgmode290.0Org Mode library for haskell (bsd3, data, library)2015-09-16lally
orgmode-parse2200.0A collection of Attoparsec combinators for parsing org-mode flavored documents. (bsd3, data, library)2018-10-31ParnellSpringmeyer
origami620.0An un-SYB framework for transforming heterogenous data through folds (bsd3, data, library)2015-10-24nedervold
osm-conduit140.0Parse and operate on OSM data in efficient way (bsd3, data, geography, library)2016-03-05przembot
osx-ar280.0Parser for OS X static archive format. (bsd3, data, library)2010-03-25ErikCharlebois
overloaded-records1002.0Overloaded Records based on current GHC proposal. (bsd3, data, library)2016-08-17PeterTrsko
pack190.0Bidirectional fast ByteString packer/unpacker (bsd3, data, library)2015-02-25capsjac
packed-dawg980.0Generation and traversal of highly compressed directed acyclic word graphs. (bsd3, data, library)2015-10-28AndrasKovacs
packed-multikey-map160.0Efficient “spreadsheet table” like maps with multiple marginals (data, gpl, library)2017-09-29leftaroundabout
packer1180.0Fast byte serializer and unserializer (bsd3, data, library)2015-10-13VincentHanquez
packer-messagepack470.0MessagePack Serialization an Deserialization for Packer (bsd3, data, library)2017-10-22mtesseract
packman1480.0Serialization library for GHC (bsd3, data, ghc, library, serialization)2018-01-19JostBerthold
pager500.0Open up a pager, like 'less' or 'more' (bsd2, data, library, program, system, text)2015-05-16pharpend
pagination710.0Framework-agnostic pagination boilerplate (bsd3, data, library)2017-07-31mrkkrp
palette1370.0Utilities for choosing and creating color schemes. (bsd3, data, library)2019-02-22BrentYorgey, jeffreyrosenbluth, bergey
pandora4130.0A box of patterns and paradigms (control, data, library, mit)2020-05-22iokasimovmt
parameterized-data690.0Parameterized data library implementing lightweight dependent types (bsd3, data, library)2016-07-08AlfonsoAcosta, HoseinAttarzadeh, ugeorge
parsergen930.0TH parser generator for splitting bytestring into fixed-width fields (bsd3, data, library)2014-11-20AkioTakano, JasperVanDerJeugt, JohnLato, MichaelBaikov
parsestar250.0NMR-STAR file format parser. (bsd3, data, library, program)2014-11-03MichalGajda
partial-order530.0Provides typeclass suitable for types admitting a partial order (bsd3, data, library)2020-03-08mtesseract
partial-records570.0Template haskell utilities for constructing records with default values (bsd3, data, library)2019-10-22mniip
password2802.0Hashing and checking of passwords (bsd3, data, library)2020-05-16cdepillabout, nideco
password-instances962.0typeclass instances for password package (bsd3, data, library)2020-05-04cdepillabout, nideco
patch-combinators330.0A library for patching functions and data structures (bsd3, data, library)2013-10-29EmilAxelsson
patches-vector2880.0Patches (diffs) on vectors: composable, mergeable, and invertible. (bsd3, data, library)2016-11-29LiamOConnorDavis
pattern-trie600.0Pattern tries (data, library, mpl)2020-05-24romanb
peano730.0Peano numbers (data, library, math)2015-03-27MatthewFarkasDyck
peano-inf830.0Lazy Peano numbers including observable infinity value. (bsd3, data, library)2008-12-05PeterDivianszky
pecoff290.0Parser for PE/COFF format. (bsd3, data, library)2010-03-25ErikCharlebois
pedestrian-dag350.0A pedestrian implementation of directed acyclic graphs (bsd3, data, data-structures, library)2018-09-19JakubWaszczuk
pem14160.0Privacy Enhanced Mail (PEM) format reader and writer. (bsd3, data, library)2018-03-02VincentHanquez
peparser480.0A parser for PE object files. (bsd3, data, library)2011-09-29IanGraves
perfecthash160.0A perfect hashing library for mapping bytestrings to values. (bsd3, data, data-structures, library)2016-05-02MarkWotton
perhaps172.0Perhaps, a monad (bsd2, data, library)2018-04-24EdwardKmett
persist1760.0Minimal serialization library with focus on performance (bsd3, data, library, parsing)2020-05-14minad
persistent-equivalence400.0Persistent equivalence relations (aka union-find) (bsd3, data, library)2011-10-01ChrisSmith
persistent-refs850.0Haskell references backed by an IntMap for persistence and reversibility. (bsd3, data, library)2015-04-14AdamFoltzer
persistent-vector392.0A persistent sequence based on array mapped tries (bsd3, data, library)2015-04-22TristanRavitch
pez490.0A Pretty Extraordinary Zipper library (bsd3, data, library)2012-01-28BrandonSimmons
pgp-wordlist1310.0Translate between binary data and a human-readable collection of words. (bsd3, data, library, serialization)2019-05-17quchen
phasechange170.0Freezing, thawing, and copy elision (bsd3, data, library)2012-06-30GaborLehel
phash510.0Haskell bindings to pHash, the open source perceptual hash library (data, gpl, library)2017-03-23MichaelXavier
phone-metadata (deprecated)520.0Phonenumber Metadata - NOTE: this is now deprecated! (data, deprecated, library)2016-06-23vijayanant, raghuugare
phone-numbers860.0Haskell bindings to the libphonenumber library (bsd3, data, library)2019-10-11ChristianMarie
pipes-files990.0Fast traversal of directory trees using pipes (bsd3, data, library)2018-07-23JohnWiegley, dnadales
pipes-interleave1940.0Interleave and merge streams of elements (bsd3, data, library)2018-08-05BenGamari
pkcs101710.0PKCS#10 library (apache, data, library)2016-11-02ktimothy
pktree300.0Implementation of the PKTree spatial index data structure (data, library)2012-04-10StephenWeber
plaid590.0Plaid.com api integration library (bsd3, data, library, network, plaid, program, web)2020-03-17v0d1ch
plailude1022.0plaimi's prelude (data, gpl, library)2015-03-13alexander
planar-graph160.0A representation of planar graphs (bsd3, data, graphs, library, maths)2012-04-27IvanMiljenovic
plucky382.0A library and technique for handling errors via plucking constraints (bsd3, data, library)2020-01-21parsonsmatt
plur310.0Plurality monad: Zero, one, or at least two. (bsd3, data, library)2019-02-12joelb
point-octree260.0Point octree, with bounding boxes (bsd3, data, library)2016-07-04MichaelLitchard
pointed9670.0Pointed and copointed data (bsd3, data, library)2018-01-22EdwardKmett, EricMertens, ryanglscott
pointedlist4690.0A zipper-like comonad which works as a list, tracking a position. (bsd3, data, library)2014-04-26JeffWheeler, RussellOConnor, fread2281
poly-arity630.0Tools for working with functions of undetermined arity (bsd3, data, functions, library)2017-03-19athanclark
poly-control70.0This package provides abstraction for polymorphic controls, like PolyMonads or PolyApplicatives. (apache, data, library)2016-01-30danilo2, iamrecursion
polyToMonoid130.0Polyvariadic functions mapping to a given monoid (bsd3, data, library)2010-10-14KevinJardine
polydata380.0Wrap together data and it's constraints. (data, library, mit)2017-10-16clinton
polymap242.0Polygonal maps (data, library, public-domain)2015-09-24Shockk
polytypeable90.0Typeable for polymorphic types. (bsd3, data, library)2009-04-08LennartAugustsson
polytypeable-utils170.0Utilities for polytypeable. (bsd3, data, library)2009-10-21KiYungAhn
polyvariadic942.0Creation and application of polyvariadic functions (bsd3, data, library)2020-02-04fgaz
pool (deprecated in favor of resource-pool)1330.0Thread-safe resource pools. (deprecated) (bsd3, data, database, deprecated, library, yesod)2012-01-25MichaelSnoyman
popkey590.0Static key-value storage backed by poppy (data, library, mit)2020-05-28identicalsnowflake
porcupine-core272.0Express portable, composable and reusable data tasks and pipelines (arrows, combinators, control, data, json, library, mit, numerical, pipes, program, streaming)2019-10-09YvesPares
porcupine-http160.0A location accessor for porcupine to connect to HTTP sources/sinks (arrows, combinators, control, data, library, mit, program, web)2019-10-09YvesPares
porcupine-s3150.0A location accessor for porcupine to connect to AWS S3 sources/sinks (arrows, aws, cloud, combinators, control, data, library, mit, program)2019-10-09YvesPares
possible450.0Three valued Data.Maybe (bsd3, data, library)2019-02-17tolysz
possibly530.0type Possibly a = Either String a (bsd3, data, library)2019-03-16ChrisDornan
postgresql-copy-escape540.0Format data to feed to a PostgreSQL COPY FROM statement (bsd3, data, library)2019-11-16JoeyAdams
pred-set520.0Simple cached predicates (bsd3, data, library)2016-04-26athanclark
pred-trie4520.0Predicative tries (bsd3, data, library)2018-11-20athanclark
predicate-class150.0Helper class for passing context along a predicate value (data, library, mit)2018-03-23HeliWang
predicate-transformers1072.0A library for writing predicates and transformations over predicates in Haskell (bsd3, data, library)2020-01-11edmundnoble
predicate-typed1250.0Predicates, Refinement types and Dsl (bsd3, data, library)2019-12-16gbwey
predictive150.0Predict the future, backtrack on failure (bsd3, data, library)2016-08-22esz
prednote5900.0Evaluate and display trees of predicates (bsd3, data, library)2015-09-10OmariNorman
prednote-test (deprecated in favor of prednote)480.0Tests and QuickCheck generators to accompany prednote. (bsd3, data, deprecated, library, program)2015-01-02OmariNorman
prefix-units1110.0A basic library for SI/binary prefix units (bsd3, data, library)2015-11-22IustinPop
prelude-plus720.0Prelude for rest of us (bsd3, control, data, system)2009-10-14YusakuHashimoto
pretty-hex1980.0A library for hex dumps of ByteStrings (bsd3, data, library)2019-12-04IavorDiatchki
pretty-loc320.0Tracking and highlighting of locations in source files (bsd3, compilers-interpreters, data, diagnostics, library, pretty-printer, text)2019-06-19GuerricChupin
pretty-tree410.0Pretty-print trees (bsd3, data, library)2012-10-26IvanMiljenovic
preview190.0The method of previewing data (instead of wholly show-ing it) (bsd3, data, library)2017-08-06AlexanderThiemann
prim-instances330.0Prim typeclass instances (bsd3, data, library)2019-06-26chessai
prim-uniq1960.0Opaque unique identifiers in primitive state monads (data, dependent-types, library, public-domain)2020-04-15BertramFelgenhauer, JamesCook, RyanTrinkle
primitive34662.25Primitive memory-related operations (bsd3, data, library)2020-02-29HerbertValerioRiedel, Bodigrim, andrewthad, chessai, topos
primitive-addr1410.0Addresses to unmanaged memory (bsd3, data, library)2019-07-18andrewthad
primitive-atomic500.0Wrappers for primops around atomic operations (bsd3, data, library)2019-05-23andrewthad
primitive-convenience160.0convenience class for PrimMonad m/PrimState m (bsd3, data, library)2019-09-26chessai
primitive-foreign530.0using the `Prim` interface for the FFI (bsd3, data, library)2019-11-15chessai
primitive-offset1280.0Types for offsets into unboxed arrays (bsd3, data, library)2019-05-30andrewthad
primitive-simd162.0SIMD data types and functions (bsd3, data, library)2016-02-01JonasScholl
primitive-stablename150.0primitive operations on StableNames (bsd3, data, library)2019-05-16chessai
primitive-unaligned560.0Unaligned access to primitive arrays (bsd3, data, library)2020-01-09andrewthad
primitive-unlifted3120.0Primitive GHC types with unlifted types inside (bsd3, data, library)2020-01-23andrewthad
priority-queue490.0Simple implementation of a priority queue. (bsd3, data, library)2010-10-20JamesCook
procrastinating-structure (deprecated)100.0Pure structures that can be incrementally created in impure code (data, deprecated, library)2009-06-15JakeMcArthur
procrastinating-variable310.0Haskell values that cannot be evaluated immediately. (bsd3, data, library)2009-06-08GregoryCrosswhite
product-isomorphic1770.0Weaken applicative functor on products (bsd3, data, library)2018-08-26KeiHibino
profunctor-arrows520.0Profunctor arrows (bsd3, data, library, profunctors)2020-03-07cmk
profunctor-misc150.0Profunctor miscellany (bsd3, data, library, profunctors)2019-10-30cmk
profunctor-optics540.0A compact optics library compatible with the typeclasses in profunctors. (bsd3, data, lenses, library, profunctors, program)2020-03-09cmk
proj4-hs-bindings190.0Haskell bindings for the Proj4 C dynamic library. (data, library)2013-09-22PavelPenev
propeller310.0A Simple Propagator Library (bsd3, data, library)2020-02-10MichaelSzvetits
property-list1470.0Apple property list parser (data, library, parsing, public-domain, xml)2015-06-19JamesCook
proto-lens5671.25A lens-based implementation of protocol buffers in Haskell. (bsd3, data, library)2020-06-04JudahJacobson, gnezdo, JinwooLee
proto-lens-arbitrary3750.0Arbitrary instances for proto-lens. (bsd3, data, library)2020-06-04JudahJacobson, gnezdo, JinwooLee
proto-lens-combinators (deprecated in favor of proto-lens)1250.0Utilities functions to proto-lens. (bsd3, data, deprecated, library)2018-10-12JudahJacobson, gnezdo
proto-lens-descriptors (deprecated in favor of proto-lens)490.0Protocol buffers for describing the definitions of messages. (bsd3, data, deprecated, library)2017-07-31JudahJacobson, gnezdo
proto-lens-optparse2850.0Adapting proto-lens to optparse-applicative ReadMs. (bsd3, data, library)2020-06-04JudahJacobson, gnezdo, JinwooLee
proto-lens-protobuf-types2750.0Basic protocol buffer message types. (bsd3, data, library)2020-06-04JudahJacobson, gnezdo, JinwooLee
proto-lens-protoc5980.0Protocol buffer compiler for the proto-lens library. (bsd3, data, library, program)2020-06-04JudahJacobson, gnezdo, JinwooLee
protobuf2730.0Google Protocol Buffers via GHC.Generics (bsd3, data, library)2020-02-15NathanHowell, YorickLaupa
protobuf-native270.0Protocol Buffers via C++ (bsd3, data, library, program)2014-10-16MaxwellSwadling
protobuf-simple1620.0Simple Protocol Buffers library (proto2) (data, library, mit, program)2018-09-05mrijkeboer
proxied1250.0Make functions consume Proxy instead of undefined (bsd3, data, library)2019-02-20ryanglscott
proxy190.0proxy helpers (data, library, mit)2018-05-16chessai
proxy-kindness160.0A library for kind-polymorphic manipulation and inspection of Proxy values (bsd3, data, library)2013-11-15BrandonSimmons
proxy-mapping300.0Mapping of Proxy Types (bsd3, data, library)2017-12-04DanielVanDenEijkel
pseudo-boolean1250.0Reading/Writing OPB/WBO files used in pseudo boolean competition (bsd3, constraints, data, library, logic, optimisation, optimization)2019-10-14MasahiroSakai
ptr3650.0Abstractions for operations on pointers (data, library, mit, ptr)2020-02-21NikitaVolkov
publicsuffix15930.0The publicsuffix list exposed as proper Haskell types (data, library, mit)2020-05-26wereHamster
pure-priority-queue510.0A pure priority queue. (bsd3, data, library)2009-12-13BradLarsen
pure-priority-queue-tests50.0Tests for the pure-priority-queue package (bsd3, data, program)2009-10-12BradLarsen
pureMD57790.0A Haskell-only implementation of the MD5 digest (hash) algorithm. (bsd3, cryptography, data, library)2016-05-09ThomasDuBuisson
purebred-email1230.0types and parser for email messages (including MIME) (agpl, data, email, library)2020-04-28frasertweedale, romanofski
pvar382.0Mutable variable with primitive values (bsd3, data, library)2020-04-02lehins
qm-interpolated-string780.0Implementation of interpolated multiline strings (data, interpolated, library, public-domain)2018-02-04unclechu
qr-imager (deprecated in favor of qrcode-juicypixels, qrcode-core)5130.0Library to generate images. (bsd3, data, deprecated, image, library, qr)2018-09-25vmchale
qr-repa160.0Library to generate QR codes from bytestrings and objects and scale image files (bsd3, data, library, program)2016-12-15
quadratic-irrational870.0An implementation of quadratic irrationals (algorithms, data, library, math, mit)2020-04-15ion, Bodigrim
quandl-api430.0Quandl.com API library (api, bsd3, data, library, web)2015-05-18PeterVanDenBrand
quantities590.0Unit conversion and manipulation library. (bsd3, data, library, math, physics, program)2015-11-07jdreaver
querystring-pickle1190.0Picklers for de/serialising Generic data types to and from query strings (data, library, network, web)2014-06-23BrendanHay
queue (deprecated)390.0Abstraction typeclasses for queue-like things. (bsd3, data, deprecated, library)2010-10-18JamesCook
quick-schema190.0Slimmed down json schema language and validator (data, json, library, mit)2015-11-03benweitzman
quickset70.0Very fast and memory-compact query-only set and map structures (bsd3, data, data-structures, library)2012-11-14ErtugrulSoeylemez, esz
raft1160.0Miscellaneous Haskell utilities for data structures and data manipulation. (data, library, mit)2019-08-14BrianBush
rakhana620.0Stream based PDF library (bsd3, data, library)2014-09-29YorickLaupa
ral370.0Random access lists (data, dependent-types, gpl, library, singletons)2019-12-13phadej
ral-lens270.0Length-indexed random access lists: lens utilities. (data, dependent-types, gpl, lens, library, singletons)2019-12-13phadej
ral-optics140.0Length-indexed random access lists: optics utilities. (data, dependent-types, gpl, library, optics, singletons)2019-12-13phadej
random-extras1480.0Additional functions for random values. (bsd3, data, library, math)2012-07-10AristidBreitkreuz
random-string500.0Generate a random base 16, 58, or 64 string (bsd3, data, library)2018-03-08ThomasDuBuisson
range1370.0An efficient and versatile range library. (data, library, mit)2019-10-26RobertMassaioli, srijs
range-set-list1590.0Memory efficient sets with ranges of elements. (data, library, mit)2019-08-03phadej
ranges (deprecated)1070.0Ranges and various functions on them. (bsd3, data, deprecated, library)2011-09-01GeorgePollard
rank1dynamic2840.0Like Data.Dynamic/Data.Typeable but with support for rank-1 polymorphic types (bsd3, data, library)2017-08-22EdskoDeVries, FacundoDominguez, MathieuBoespflug, TimWatson
rank2classes4630.0standard type constructor class hierarchy, only with methods of rank 2 types (bsd3, control, data, generics, library)2020-05-18MarioBlazevic
rcu1600.0Read-Copy-Update for Haskell (bsd3, data, library, program)2019-05-02EdwardKmett, EricMertens, ryanglscott
rdf562.0Representation and Incremental Processing of RDF Data (data, library, mit)2019-04-23TravisWhitaker
record-aeson310.0Instances of "aeson" classes for the "record" types (data, json, library, mit, records)2015-11-06NikitaVolkov
record-encode (deprecated)1160.0Generic encoding of records (bsd3, data, data-mining, data-science, deprecated, library, machine-learning)2019-01-23ocramz
records940.0A flexible record system (bsd3, data, library, records)2012-01-15WolfgangJeltsch
records-th100.0Template Haskell declarations for the records package (data, library, mit)2012-08-01SamAnklesaria
recursion-schemes-ix180.0Recursion schemes over indexed Functors (bsd3, data, library)2020-04-24SkyeSoss
red-black-record4330.0Extensible records and variants indexed by a type-level Red-Black tree. (bsd3, data, library)2020-05-30DanielDiazCarrete
redis-resp1230.0REdis Serialization Protocol (RESP) implementation. (data, library, mpl)2018-08-30ToralfWittner, romanb
reducers7200.0Semigroups, specialized containers and a general map/reduce framework (bsd3, data, library, math, numerical, semigroups)2018-07-03EdwardKmett, EricMertens, ryanglscott
reedsolomon1440.0Reed-Solomon Erasure Coding in Haskell (data, library, mit)2017-01-13NicolasTrangez
ref320.0Generic Mutable Ref Abstraction Layer (bsd3, data, library)2013-03-31CarterSchonwald
ref-extras860.0Extra stuff for mutable references (bsd3, data, library)2020-05-10ejconlon
refcount360.0Container with element counts (data, library, mit)2014-06-08BenFoppa
reference190.0A class for references in Haskell (control, data, library, mit)2010-09-06MaciejPiechotka
refined2162.25Refinement types with static and runtime checking (data, library, mit)2019-10-19NikitaVolkov, chessai
refined-http-api-data170.0http-api-data instances for refined types (data, library, mit)2019-11-06brandonhamilton
reflection29072.25Reifies arbitrary terms into types that can be reflected back into terms (bsd3, data, dependent-types, library, reflection)2020-05-16EdwardKmett, ryanglscott
reflection-extras1010.0Utilities for the reflection package (bsd3, data, library)2013-12-31EdwardKmett, JonathanFischoff
reflection-without-remorse800.0Efficient free and operational monads. (bsd3, data, data-structures, library)2014-12-30AtzeVanDerPloeg
regex-easy190.0sugar for regex-pcre (bsd3, data, library)2014-03-05MatthiasFischmann
regex-type190.0Type-level regular expressions (bsd3, data, library)2016-04-01kcsongor
regex-wrapper350.0Types that can only be constructed if they match a regular expression (bsd3, data, library)2019-11-11lukec
regexp-tries260.0Regular Expressions on Tries. (bsd3, data, library)2012-02-08AndreasBaldeau
regular-xmlpickler (deprecated in favor of generic-xmlpickler)440.0Generic generation of HXT XmlPickler instances using Regular. (bsd3, data, deprecated, library, xml)2014-04-04AdamBergmark, ErikHesselink
rei3252.0Process lists easily (data, mit, program)2016-12-04kerkomen
reify190.0Serialize data (data, library, program)2009-01-19GwernBranwen
reinterpret-cast950.0Memory reinterpretation casts for Float/Double and Word32/Word64 (data, library, mit)2014-04-30NiklasHambuechen
relapse360.0Sensible RLP encoding (data, library, mit)2017-03-21iostat
relative-date300.0Durations and generalized time parsing (bsd3, data, library)2010-04-02SamAnklesaria
relevant-time290.0humanised relevant time (bsd3, data, library)2019-05-11chessai, goolord
reord180.0Ad-hoc Ord instances (data, library, public-domain)2008-10-22JamesCook
reorderable310.0Define compound types that do not depend on member order. (data, library, type-system)2013-11-15AlexCole
repa-linear-algebra590.0HMatrix operations for Repa. (bsd3, data, library)2016-03-01mjmrotek
resource-pool7982.25A high-performance striped resource pooling implementation (bsd3, data, database, library, network)2014-12-16BasVanDijk, BryanOSullivan
resource-pool-catchio510.0Fork of resource-pool, with a MonadCatchIO constraint (bsd3, data, database, library, network)2012-03-08JurrienStutterheim
resourcet29640.0Deterministic allocation and freeing of scarce resources. (bsd3, conduit, data, library)2020-04-19MichaelSnoyman
restricted-workers150.0Running worker processes under system resource restrictions (bsd3, concurrency, data, library, system)2013-08-26DaniilFrumin
result1830.0Encode success or at least one error (data, library, mit)2016-10-02srijs
reverse-arguments270.0Reverse the arguments of arbitrary functions. (bsd3, data, library)2016-03-25JonasScholl
reverse-geocoding980.0Simple reverse geocoding using OpenStreeMap (bsd3, data, library)2017-02-13jcristovao
riff740.0RIFF parser for Haskell (data, library, mit, program)2015-04-24RobertMassaioli
ring-buffer792.0A concurrent, mutable ring-buffer (bsd3, data, library)2017-10-07BenGamari
ring-buffers480.0mutable ring buffers with atomic updates in GHC Haskell (bsd3, data, library)2019-04-11chessai
ripple-federation330.0Utilities and types to work with the Ripple federation protocol (data, library)2014-12-29StephenWeber
rivers180.0Rivers are like Streams, but different. (bsd3, comonads, data, library, math)2011-12-04DrewDay
rng-utils340.0RNG within an IORef for convenient concurrent use (bsd3, data, library, random)2017-10-20DougBeardsley, MichaelXavier, OzgunAtaman
roc-cluster160.0ROC online clustering algorithm (bsd3, data, library)2017-05-17NCrashed
roles310.0Composable class-based roles (bsd3, data, library)2017-10-16mnoonan
rolling-queue150.0Bounded channel for STM that discards old entries when full (bsd3, data, library)2012-02-16JoeyAdams
rope-utf16-splay3540.0Ropes optimised for updating using UTF-16 code units and row/column pairs. (bsd3, data, language, library, text)2019-05-06OlleFredriksson
rose-trees950.0Various trie implementations in Haskell (bsd3, data, library, tree)2020-03-07athanclark
rose-trie700.0Trees with polymorphic paths to nodes, combining properties of Rose Trees and Tries. (data, gpl, library)2017-03-27RaminHonary
roundtrip-aeson480.0Un-/parse JSON with roundtrip invertible syntax definitions. (bsd3, data, library)2018-10-14ThomasSutton, ChristianMarie
route-planning290.0A library and utilities for creating a route (bsd3, data, library)2014-04-18TonyMorris
row-types2110.0Open Records and Variants (data, data-structures, library, mit)2020-05-20dwincort
rowrecord180.0Build records from lists of strings, as from CSV files. (bsd3, data, library, text)2010-09-27KeeganMcAllister
rset250.0Range set (data, library)2017-08-08lovasko
rstream160.0stream-fusion framework from vector (bsd3, data, data-structures, library)2018-11-01chessai
rtorrent-state360.0Parsing and manipulation of rtorrent state file contents (data, gpl, library)2014-08-17MateuszKowalczyk
ruby-marshal1430.0Parse a subset of Ruby objects serialised with Marshal.dump. (data, library, mit)2020-05-21filib
ruin280.0Pliable records (bsd3, data, library, records)2016-08-07NicolasFrisby
run-haskell-module330.0Running newly generated Haskell source module. (bsd3, data, library, tools)2020-03-29MichalGajda
run-st1370.0runST without boxing penalty (bsd3, data, library)2020-01-16andrewthad
runmany460.0Run multiple commands, interleaving output and errors (bsd3, data, nix, program, system)2018-04-26JohnWiegley
runmemo590.0A simple memoization helper library (bsd3, data, library)2013-11-28DanBurton
s-cargot1150.0A flexible, extensible s-expression library. (bsd3, data, library)2018-03-02gdritter
s-cargot-letbind1030.0Enables let-binding and let-expansion for s-cargot defined S-expressions. (data, library)2018-06-12KevinQuick
s-expression160.0simple general-purpose s-expressions (data, library, mit, program)2017-05-01sboo
safe-freeze300.0Support for safely freezing multiple arrays in the ST monad. (bsd3, data, library)2012-06-02ReinerPope
safe-globals200.0Safe top-level mutable variables which scope like ordinary values (bsd3, data, library)2011-12-21KeeganMcAllister
safe-length82.0Tired of accidentally calling length on tuples? Relief at last! (bsd3, data, library)2015-10-29JeremyShaw
safecopy7250.0Binary serialization with version control. (data, library, parsing, public-domain)2020-04-15AdamGundry, DavidFox, DavidHimmelstrup, DavidJohnson, JeremyShaw
safecopy-migrate (deprecated)290.0Making SafeCopy migrations easier (data, deprecated, library, public-domain)2018-08-19Artyom
safecopy-store1220.0Binary serialization with version control. (data, library, parsing, public-domain)2017-12-21NCrashed
safeint410.0overflow-checked Int type (bsd3, data, library)2015-10-29AndresLoeh
scan-metadata (deprecated)180.0Metadata types for Albedo Scanners (data, deprecated, library, mit)2019-05-31arbornetworks
schedule-planner790.0Find the ideal lesson layout (convenience, data, lgpl, planning, program)2015-06-21justus
schema200.0Encoding-independent schemas for Haskell data types. (data, gpl, library)2020-03-27iphydf
schemas1290.0schema guided serialization (bsd3, data, library)2020-04-28PepeIborra, adamse
schematic3591.75JSON-biased spec and validation tool (bsd3, data, library)2019-02-20dredozubov
scientific20762.0Numbers represented using scientific notation (bsd3, data, library)2018-05-07BasVanDijk, BryanOSullivan
scientific-notation450.0Scientific notation intended for tokenization (bsd3, data, library)2020-05-01andrewthad
scythe540.0Fast CSV lexing on ByteString (bsd3, data, library, program)2018-09-19DavidJohnson
sec130.0Semantic Editor Combinators. (bsd3, combinators, data, library)2010-03-30SteffenSiering
secret-sharing2580.0Information-theoretic secure secret sharing (cryptography, data, lgpl, library)2020-05-10PeterRobinson
securemem7960.0abstraction to an auto scrubbing and const time eq, memory chunk. (bsd3, data, library)2018-02-27VincentHanquez
semantic-source860.0Types and functionality for working with source code (data, library, mit)2020-03-23patrick_thomson, tclem, robrix, dcreager, aymannadeem, joshvera, maxbrunsfeld, rewinfrey
semi-iso750.0Weakened partial isomorphisms, reversible computations. (control, data, library, mit)2014-12-12pawel834
semialign4190.0Align and Zip type-classes from the common Semialign ancestor. (bsd3, data, library, these)2019-10-21phadej
semialign-extras180.0Extra functions for working with Semialigns (bsd3, data, library)2019-11-15qfpl, jack
semialign-indexed770.0SemialignWithIndex, i.e. izipWith and ialignWith (bsd3, data, library, these)2019-10-21phadej
semialign-optics400.0SemialignWithIndex, i.e. izipWith and ialignWith (bsd3, data, library, these)2019-10-21phadej
semibounded-lattices330.0A Haskell implementation of semibounded lattices (bsd3, data, library)2016-09-27xuhao
semigroupoids-syntax180.0RebindableSyntax using the semigroupoids package (bsd3, data, library)2014-11-01TonyMorris
semigroups46632.75Anything that associates (algebra, bsd3, data, data-structures, library, math)2019-08-27EdwardKmett, EricMertens, HerbertValerioRiedel, ryanglscott
semigroups-actions200.0Semigroups actions (algebra, bsd3, data, data-structures, library, math)2012-12-20PetrPudlak
semilattices1160.0Semilattices (algebra, bsd3, data, data-structures, library, math)2019-10-03robrix
semiring-num6782.0Basic semiring class and instances (data, library, mit)2019-11-23oisdk
semirings5812.0two monoids as one, in holy haskimony (algebra, bsd3, data, data-structures, library, math, mathematics, maths)2020-02-18chessai
semver2462.0Representation, manipulation, and de/serialisation of Semantic Versions. (data, library)2019-05-14BrendanHay
separated3560.0A data type with elements separated by values (bsd3, data, library)2018-02-02TonyMorris, qfpl, GeorgeWilson
seqid1390.0Sequence ID production and consumption (bsd3, data, library)2019-11-07wraithm, LukeHoersten
sequence1230.0A type class for sequences and various sequence data structures. (bsd3, data, data-structures, library)2015-05-16AtzeVanDerPloeg
sequential-index600.0Sequential numbers that allow arbitrarily inserting numbers - for containers (bsd3, data, library)2013-01-29AristidBreitkreuz
serialise-uuid180.0Encode and decode UUID values in CBOR using uuid-types, cborg and serialise. (bsd3, data, library)2020-04-21RenzoCarbonara
serialize-instances200.0Instances for Serialize of cereal (data, library, mit)2016-10-28SimonHudon, bandali
set-extra1020.0Functions that could be added to Data.Set. (bsd3, data, library)2018-05-22DavidFox
set-monad420.0Set monad (bsd3, data, library, monad)2018-10-11GeorgeGiorgidze
set-of280.0Sets of fixed size, with typelits (bsd3, data, library)2019-02-04fresheyeball
setoid (deprecated in favor of skeletal-set)160.0A Haskell implementation of setoid (bsd3, data, deprecated, library)2017-03-12PavloKerestey
setops370.0Uniform names (and Unicode operators) for set operations on data structures. (data, library, public-domain)2012-05-10eelis
sets1080.0Ducktyped set interface for Haskell containers. (bsd3, data, library)2019-10-27athanclark
setters210.0Small (TH) library to declare setters for typical `record' data type fields. (bsd3, data, library)2010-11-23IlyaPortnov
settings820.0Runtime-editable program settings. (data, library, public-domain, user-interfaces)2016-01-27akrasner
sexpresso270.0A flexible library for parsing and printing S-expression (data, library)2020-04-07VincentArchambault
sext (deprecated in favor of static-text)1360.0Lists, Texts, ByteStrings and Vectors with type-encoded length (bsd3, data, deprecated, library, text, type-system)2017-10-29DmitryDzhus
sgf390.0SGF (Smart Game Format) parser (bsd3, data, library)2014-06-24DanielWagner, tonicebrian, dbouamalay
sha1290.0SHA-1 Hash (bsd3, data, library)2020-03-09andrewthad
shapely-data290.0Generics using @(,)@ and @Either@, with algebraic operations and typed conversions (bsd3, data, generics, library)2013-12-22BrandonSimmons
shortcircuit170.0Short-circuit values and expressions. (bsd3, control, data, library)2010-10-14AristidBreitkreuz
sieve190.0Sieve is an implementation of the Sieve abstract data type. (data, gpl, library)2013-01-15JohnSingleton
siggy-chardust540.0Rounding rationals to significant digits and decimal places. (data, library, math, mpl, numeric)2018-06-22philderbeast
sign990.0Arithmetic over signs and sets of signs (algebra, bsd3, data, library, math)2019-09-26MasahiroSakai
simple-atom90.0Atom (or symbol) datatype for fast comparision and sorting. (bsd3, compilers-interpreters, data, library, parsing)2011-04-06ThomasSchilling
simple-conduit850.0A simple streaming I/O library based on monadic folds (bsd3, conduit, data, library)2017-01-23JohnWiegley
simple-enumeration200.0Finite or countably infinite sequences of values. (bsd3, data, library)2019-07-03BrentYorgey
simple-index200.0Allows simple indexation on any data type (bsd3, data, library)2014-01-07HugoGomes
simple-money730.0Simple library to handle and interexchange money (data, library, public-domain)2017-01-20nbrk
simple-pipe2870.0simple pipeline library like conduit (bsd3, data, library)2015-09-29YoshikuniJujo
simple-rope80.0Memory-efficient strings with concatenation and splitting. (bsd3, data, library)2011-06-24EugeneKirpichov
simplistic-generics370.0Generic programming without too many type classes (bsd3, data, library)2020-05-02AlejandroSerrano
simtreelo960.0Load data organized in a tree. (data, gpl, library)2018-10-23mgmillani
single-tuple500.0a class for single tuple implementations (apache, data, library)2020-05-25kakkun61
singlethongs180.0Like singletons, but much smaller. (bsd3, data, library)2020-04-19RenzoCarbonara
singleton-dict260.0Typelevel balanced search trees via a singletonized Data.Map (bsd3, data, dependent-types, library)2017-06-09ArieMiddelkoop
singleton-nats1780.0Unary natural numbers relying on the singletons infrastructure. (bsd3, data, dependent-types, library)2020-04-11AndrasKovacs, ryanglscott
singleton-typelits410.0Singletons and induction over GHC TypeLits (bsd3, data, library)2018-07-11mniip
sink (deprecated)260.0An 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)920.0siphash: a fast short input PRF (bsd3, cryptography, data, deprecated, library)2012-12-14VincentHanquez
siren-json1080.0Siren Tools for Haskell (data, library, mit)2019-02-18alunduil
size-based470.0Sized functors, for size-based enumerations (bsd3, data, library)2018-10-19JonasDuregard
sized1712.0Sized sequence data-types (bsd3, data, library)2020-02-09HiromiIshii
sized-grid802.0Multidimensional grids with sized specified at compile time (data, library, mit)2019-09-13edwardwas
sized-vector (deprecated in favor of sized)1390.0Size-parameterized vector types and functions. (bsd3, data, deprecated, library)2016-07-27HiromiIshii
skeletal-set170.0Skeletal set - a set with equivalence relation different from equality (bsd3, data, library)2018-04-24PavloKerestey
skip-list480.0An implementation of pure skip lists (data, library, mit)2017-07-22gmalecha
sliceofpy202.0Python-ish slicing traversals for Haskell. (bsd3, data, lenses, library, program)2019-08-23lgastako
slotmap320.0Pure Haskell slotmap implementation over ST or IO. (bsd3, data, library)2018-09-17HarpoRoeder
small-bytearray-builder2530.0Serialize to bytes (bsd3, data, library)2020-02-27andrewthad
smallarray600.0low-level unboxed arrays, with minimal features. (bsd3, data, library)2012-06-15AntoineLatter
smallstring510.0A Unicode text type, optimized for low memory overhead (bsd3, data, library)2012-06-15AntoineLatter
smaoin590.0Utilities for the Smaoin semantic information model. (data, library, public-domain)2015-06-18akrasner
smash260.0Combinators for Maybe types (bsd3, data, library)2020-04-07topos
smash-aeson280.0Aeson support for the smash library (bsd3, data, library)2020-04-07topos
smash-lens60.0Optics for the `smash` library (bsd3, data, library)2020-04-07topos
smash-microlens170.0Optics for the `smash` library (bsd3, data, library)2020-04-07topos
smith490.0Parse arrays of tokens (bsd3, data, library)2020-01-20andrewthad
smoothie10060.0Smooth curves via several interpolation modes (bsd3, data, library)2020-05-31DimitriSabadie
snowflake850.0A loose port of Twitter Snowflake to Haskell. Generates arbitrary precision, unique, time-sortable identifiers. (apache, data, library)2015-03-17edofic
some1860.0Existential type: Some (bsd3, data, dependent-types, library)2019-11-21RyanTrinkle, phadej
sop-core6692.0True Sums of Products (bsd3, data, library)2020-03-29AndresLoeh
sorted90.0Efficient, type-safe sorted sequences (data, library, mit)2013-11-15JosephAbrahamson
sorted-list3900.0Type-enforced sorted lists and related functions. (bsd3, data, library)2018-04-25DanielDiaz
sorting230.0Utils for sorting. (bsd3, data, library)2015-04-26joneshf
spacepart180.0Space partition data structures. Currently only a QuadTree. (bsd3, data, library)2009-02-16CoreyOConnor
sparse1700.0A playground of sparse linear algebra primitives using Morton ordering (bsd3, data, library, vector)2015-07-03EdwardKmett, HansHoglund
sparse-tensor1520.0typesafe tensor algebra library (algebra, data, library, math, mit)2020-02-06nalex, TobiReinhart
spdx1520.0SPDX license expression language, Extras (bsd3, data, library)2020-03-27phadej
special-keys540.0Simple data types that help me here and there. (bsd3, data, library)2013-09-01HugoGomes
splaytree740.0Provides an annotated splay tree (bsd3, data, library)2013-04-20JohnLato
split-morphism292.0Split Epimorphisms and Monomorphisms (bsd3, data, generics, lenses, library)2019-09-10gvolpe
spreadsheet3230.0Read and write spreadsheets from and to CSV files in a lazy way (bsd3, data, library, text)2018-09-02HenningThielemann
srcloc3250.0Data types for managing source code locations. (bsd3, data, library)2018-03-30GeoffreyMainland
srec340.0Parsing and processing s-records. (bsd3, data, embedded, library)2011-08-27TomHawkins
sstable180.0SSTables in Haskell (bsd3, data, library, program)2010-07-31MariusEriksen
st2310.0shared heap regions between local mutable state threads (bsd3, data, library)2018-11-03chessai
stable-memo910.0Memoization based on argument identity (data, library, mit)2015-07-12JakeMcArthur
stable-tree1080.0Trees whose branches are resistant to change (bsd3, data, library, program)2015-03-14tsuraan
stack-prism1770.0Stack prisms (bsd3, data, library)2018-06-16MartijnVanSteenbergen, SjoerdVisscher
stackage-types (deprecated in favor of stackage-curator)450.0Shared data types between various Stackage packages (data, deprecated, library, mit)2016-01-20MichaelSnoyman
star (deprecated in favor of semirings)740.0*-semirings (bsd3, data, deprecated, library)2017-12-31chessai
state230.0Data.State (data, library)2009-10-19EvgenyJukov, MauricioAntunes
state-codes590.0ISO 3166-2:US state codes and i18n names (data, library, mit)2017-10-17acamino
state-record (deprecated in favor of lens)210.0Better records for State monad states (data, deprecated, library)2011-04-17KarlVoelker
stateref1520.0Abstraction for things that work like IORef. (data, public-domain)2009-11-19JamesCook
static-tensor790.0Tensors of statically known size (bsd3, data, library)2017-12-16vagarenko
static-text2210.0Lists, Texts, ByteStrings and Vectors of statically known length (bsd3, data, library, text, type-system)2020-06-03DmitryDzhus
std180.0TBA (bsd3, data, library, prelude)2019-06-27chessai
stdata540.0Structure Data Library (bsd3, data, library)2011-06-22DavidDarais
stdf270.0Parse Structured Test Data Format (STDF) (data, gpl, library, program)2014-10-13m
stdio402.25A simple and high performance IO toolkit for Haskell (bsd3, data, library)2019-05-15winterland
stm-linkedlist170.0Mutable, doubly linked lists for STM (bsd3, data, library)2011-10-20JoeyAdams
stm-sbchan200.0Bounded channel for STM where item sizes can vary (bsd3, data, library)2012-07-31JoeyAdams
stm-tlist310.0Mutable, singly-linked list in STM (bsd3, data, library)2012-02-22JoeyAdams
storable70.0Storable type class for variable-sized data (bsd3, data, foreign, library)2009-03-05TomasJanousek
storable-complex4872.0Storable instance for Complex (bsd3, data, library)2018-11-05CarterSchonwald, JedBrown
storable-endian2470.0Storable instances with endianness (bsd3, data, library)2016-12-16EugeneKirpichov
storable-record6450.0Elegant definition of Storable instances for records (bsd3, data, foreign, library)2020-03-21HenningThielemann
storable-tuple4350.0Storable instance for pairs and triples (bsd3, data, foreign, library)2017-10-03HenningThielemann
storablevector3530.0Fast, packed, strict storable arrays with a list interface like ByteString (bsd3, data, library)2018-02-17HenningThielemann
storablevector-carray290.0Conversion between storablevector and carray (bsd3, data, library)2012-07-23HenningThielemann
storablevector-streamfusion170.0Conversion between storablevector and stream-fusion lists with fusion (bsd3, data, library)2009-04-24HenningThielemann
store4550.0Fast binary serialization (data, library, mit, serialization)2020-04-04MichaelSloan, MichaelSnoyman, borsboom, fpcomplete, philipp
store-core3260.0Fast and lightweight binary serialization (data, library, mit, serialization)2019-10-23MichaelSloan, MichaelSnoyman, borsboom, fpcomplete, philipp
store-streaming330.0Streaming interfaces for `store` (data, library, mit, serialization)2019-10-17MichaelSloan
stream160.0Initial project template from stack (data, library, mit)2016-04-20MichaelSnoyman
stream-fusion1880.0Faster Haskell lists using stream fusion (bsd3, data, library)2013-01-12DonaldStewart, KidoTakahiro
streaming8802.5an elementary streaming prelude and general stream type. (bsd3, data, library, pipes, streaming)2019-09-24MichaelThompson, andrewthad, chessai
streaming-bracketed510.0A resource management decorator for "streaming". (data, library, mit, streaming)2018-07-31DanielDiazCarrete
streaming-bytestring8322.25effectful byte steams, or: bytestring io done right. (bsd3, data, library, pipes, streaming)2018-04-05IvanMiljenovic, andrewthad
streaming-cassava450.0Cassava support for the streaming ecosystem (data, library, mit, streaming)2018-01-23IvanMiljenovic
streaming-commons24192.0Common lower-level functions needed by various streaming data libraries (data, library, mit)2020-01-05MichaelSnoyman
streaming-concurrency580.0Concurrency support for the streaming ecosystem (data, library, mit, streaming)2019-05-13IvanMiljenovic
streaming-conduit440.0Bidirectional support between the streaming and conduit libraries (data, library, mit, streaming)2018-02-11IvanMiljenovic
streaming-fft320.0online streaming fft (bsd3, data, library)2018-10-24chessai
streaming-process130.0Streaming support for running system process (data, library, mit, streaming)2018-05-23IvanMiljenovic
streaming-sort430.0Sorting streams (data, library, mit, streaming)2018-03-23IvanMiljenovic
streaming-utils1330.0http, attoparsec, pipes and other utilities for the streaming libraries (bsd3, data, library, pipes, streaming)2019-02-14OliverCharles, MichaelThompson, andrewthad, chessai
streaming-with2000.0with/bracket-style idioms for use with streaming (data, library, mit, streaming)2018-05-23IvanMiljenovic
strict6170.0Strict data types and String IO. (bsd3, data, library, system)2008-03-07DonaldStewart, RomanLeshchinskiy
strict-base370.0Strict versions of base data types. (bsd3, data, library, system)2017-03-18minad
strict-base-types1322.0Strict variants of the types provided in base. (bsd3, data, library)2018-02-11BasVanDijk, SimonMeier, phadej
strict-data420.0A collection of commonly used strict data structures (bsd3, data, library)2017-08-06AlexanderThiemann
strict-tuple1000.0Strict tuples (bsd3, data, library)2019-10-20mitchellwrosen, topos
strict-tuple-lens1030.0Optics for the `strict-tuple` library (bsd3, data, library)2020-05-14topos
string-class840.0String class library (bsd3, data, library, text)2018-02-13ByronJohnson, k_bx
string-combinators2350.0Polymorphic functions to build and combine stringlike values (bsd3, data, library)2014-06-13BasVanDijk
string-conv4661.75Standardized conversion between string types (bsd3, data, library, string, text)2016-06-22DougBeardsley, MichaelXavier, OzgunAtaman
string-conversions8152.5Simplifies dealing with different types for strings (bsd3, data, library)2016-12-30SoenkeHahn
string-interpolate2612.25Haskell string/text/bytestring interpolation that just works (bsd3, data, library, text)2020-05-05williamyaoh
string-qq1260.0QuasiQuoter for non-interpolated strings, texts and bytestrings. (data, library, public-domain)2019-09-24AudreyTang
string-quote180.0QuasiQuoter for non-interpolated strings, texts and bytestrings. (bsd3, data, library)2011-03-29AudreyTang
string-similarity190.0longest common substring (bsd3, data, library)2013-07-21MarkWotton
string-typelits80.0Type-level Chars and Strings, with decidable equality. (bsd3, data, library)2016-01-27KyleCarter
stringable (deprecated)1920.0A Stringable type class, in the spirit of Foldable and Traversable (bytestring, data, deprecated, library, mit, text)2014-05-02JohnWiegley, KetilMalde
stringprep1480.0Implements the "StringPrep" algorithm (bsd3, data, library)2014-01-06GeorgePollard
stringtable-atom940.0Memoize Strings as Atoms for fast comparison and sorting, with maps and sets (bsd3, data, library, pugs)2014-05-17AudreyTang, JeffShaw
strptime1740.0Efficient 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
structs1840.0Strict GC'd imperative object-oriented programming with cheap pointers. (bsd3, data, library)2020-01-29EdwardKmett, EricMertens, ryanglscott
structured360.0Structure (hash) of your data types (bsd3, data, library)2020-05-16phadej
structures312.0"Advanced" Data Structures (bsd3, data, library, structures)2014-07-28EdwardKmett
success2492.0A version of Either specialised for encoding of success or failure (data, failure, library, mit)2016-02-07NikitaVolkov
suffixarray450.0n log n implementation of suffix array. (data, gpl, library, program)2012-06-17DanielDeKok, VictorDenisov
suffixtree480.0Efficient, lazy suffix tree implementation (bsd3, data, data-structures, library)2011-10-17BryanOSullivan
suitable300.0Abstract over the constraints on the parameters to type constructors (bsd3, data, library)2011-03-15GaneshSittampalam
swagger1290.0Implementation of swagger data model (data, library)2016-09-18ToralfWittner
syb-with-class6690.0Scrap Your Boilerplate With Class (bsd3, data, library)2020-05-18AndreaVezzosi, DavidHimmelstrup, IanLynagh, JeremyShaw
syb-with-class-instances-text240.0Scrap Your Boilerplate With Class Text instance (bsd3, data, library)2010-04-02JeremyShaw
symbiote1740.0Data serialization, communication, and operation verification implementation (bsd3, data, library, testing)2020-02-12athanclark
symbol2770.0A 'Symbol' type for fast symbol comparison. (bsd3, data, library)2014-10-09GeoffreyMainland
syntax420.0Reversible parsing and pretty-printing. (data, library, mit)2014-12-12pawel834
syntax-attoparsec510.0Syntax instances for Attoparsec. (data, library, mit)2014-12-12pawel834
syntax-example460.0Example application using syntax, a library for abstract syntax descriptions. (data, mit, program)2014-12-12pawel834
syntax-example-json300.0Example JSON parser/pretty-printer. (data, mit, program)2014-12-12pawel834
syntax-pretty (deprecated in favor of syntax-printer)320.0Syntax instance for pretty, the pretty printing library. (data, deprecated, library, mit)2014-11-23pawel834
syntax-printer260.0Text and ByteString printers for 'syntax'. (data, library, mit)2014-12-12pawel834
t-regex190.0Matchers and grammars using tree regular expressions (bsd3, data, library)2015-02-17AlejandroSerrano
tables (deprecated)802.0In-memory storage with multiple keys using lenses and traversals (bsd3, data, deprecated, lenses, library)2015-01-12EdwardKmett, TimDixon
tagged24972.0Haskell 98 phantom types to avoid unsafely passing dummy arguments (bsd3, data, library, phantom-types)2018-07-02EdwardKmett, ryanglscott
tagged-binary720.0Provides tools for serializing data tagged with type information. (data, library, mit, serialization)2017-07-31jle
tagged-list290.0Lists tagged with a type-level natural number representing their length. (bsd3, data, library)2011-10-21GregoryCrosswhite
tagged-transformer1860.0Monad transformer carrying an extra phantom type tag (bsd3, data, library, phantom-types)2018-04-24EdwardKmett, MatveyAksenov, ryanglscott
tagging150.0Library for tagging data (bsd3, data, library)2010-11-25JosephRe
tai6470.0Tai64 Labels for Haskell (data, library, mpl)2016-06-21KimAltintop
taskwarrior3390.0Types and aeson instances for taskwarrior tasks (agpl, data, library, taskwarrior)2020-05-23maralorn
tbox320.0Transactional variables and data structures with IO hooks (concurrency, data, library)2010-04-02PeterRobinson
telega4370.0Telegram Bot API binding (control, data, library, mit)2020-01-30iokasimovmt
template-default330.0declaring Default instances just got even easier (bsd3, data, library)2016-06-03DanielWagner, GregoryCollins
tensor490.0A completely type-safe library for linear algebra (data, gpl, library, math)2013-10-19NicolaSquartini
terminal-text250.0Text 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
text33232.75An efficient packed Unicode text type. (bsd2, data, library, text)2019-08-10BryanOSullivan, HerbertValerioRiedel
text-ansi590.0Text styling for ANSI terminals. (bsd3, data, library)2018-11-14mitchellwrosen
text-binary4640.0Binary instances for text types (bsd2, data, library)2016-09-29JakubWaszczuk
text-containers210.0Memory-efficient string-indexed container types. (data, data-structures, gpl, library)2017-10-13HerbertValerioRiedel
text-conversions4562.5Safe conversions between textual types (data, library)2016-06-09jxv, lexi_lambda
text-icu6962.0Bindings to the ICU library (bsd3, data, library, text)2015-01-09BryanOSullivan
text-icu-normalized740.0Dealing with Strict Text in NFC normalization. (data, gpl, library, text)2017-04-30misandrist
text-locale-encoding330.0Encode and decode Text to/from ByteString using TextEncoding (bsd3, codec, data, library, text)2013-09-10MikhailKuddah
text-manipulate4050.0Case conversion, word boundary manipulation, and textual subjugation. (data, library, text)2015-04-17BrendanHay
text-normal310.0Unicode-normalized text (data, library, mit)2014-04-22JoelTaylor
text-plus170.0Utils for text (bsd3, data, library)2017-08-06AlexanderThiemann
text-position150.0Handling positions in text and position-tagging it. (data, library, public-domain, text)2015-04-28akrasner
text-regex-replace680.0Easy replacement when using text-icu regexes. (apache, data, library, text)2018-05-25EricRochester
text-short7322.25Memory-efficient representation of Unicode text strings (bsd3, data, library)2019-07-20HerbertValerioRiedel
text-stream-decode (deprecated in favor of streaming-commons)1970.0Streaming decoding functions for UTF encodings. (deprecated) (data, deprecated, library, mit, text)2014-03-26MichaelSnoyman
text-time560.0Library for Time parsing from Text into UTCTime (bsd3, data, library)2016-12-14klangner
text-trie150.0An efficient finite map from Text to values, based on bytestring-trie. (bsd3, data, data-structures, library)2019-04-11lambdamichael
text-utf7230.0UTF-7 encoding/decoding for Data.Text (bsd3, data, library)2014-12-08DanielWright
text-utf8320.0An efficient packed UTF-8 backed Unicode text type. (bsd2, data, library, text)2018-05-14HerbertValerioRiedel
text11480.0Non-empty values of `Data.Text`. (bsd3, data, library)2018-09-25TonyMorris, qfpl, GeorgeWilson
th-format850.0Template Haskell based support for format strings (bsd3, data, library)2019-11-15mtesseract
these18252.5An either-or-both data type. (bsd3, data, library, these)2020-05-26JohnWiegley, phadej, cmccann
these-lens430.0Lenses for These (bsd3, data, lens, library, these)2019-06-02phadej
these-optics430.0Optics for These (bsd3, data, library, optics, these)2019-09-03phadej
these-skinny472.0A fork of the 'these' package without the dependency bloat. (bsd3, data, library)2018-06-28chessai
thorn280.0Datatype Manipulation with Template Haskell (bsd3, data, generics, library)2013-11-23Kinokkory
through-text410.0Convert textual types through Text without needing O(n^2) instances. (bsd3, data, library)2015-05-07AdamBergmark
thyme3572.0A faster time library (bsd3, data, library, system)2014-11-27LiyangHu
tickle1980.0A port of @Data.Binary@ (bsd3, data, library)2018-01-03TonyMorris, qfpl, GeorgeWilson
tiempo320.0Specify time intervals in different units (secs, mins, hours, etc.) (data, library, mit, time)2015-09-01RomanGonzalez
tight-apply190.0Tightly binding infix function application (data, library, public-domain)2015-09-07Shockk
tile610.0Slippy map tile functionality. (bsd3, data, library)2017-10-26jmc41493
time-interval350.0Use a time unit class, but hold a concrete time type. (data, library, public-domain)2016-05-30akrasner
time-lens1370.0Lens-based interface to Data.Time data structures (bsd3, data, library)2018-01-04RomanCheplyaka
time-patterns2070.0Patterns for recurring events (bsd3, data, library, time)2018-07-02jfmueller
time-series100.0Time series analysis. (data, gpl, library, program)2013-11-08AtsuroHoshino
time-series-lib (deprecated in favor of timeseries)260.0Library for Time Series processing (bsd3, data, deprecated, library)2016-12-10klangner
time-units3170.0A basic library for defining units of time as types. (bsd3, data, library)2011-03-07AdamWick
timelike440.0Type classes for types representing time (data, library, system)2016-04-07esz
timeparsers290.0Attoparsec parsers for various Date/Time formats. (bsd3, data, library)2012-11-07NathanHunter, PhilipWeaver
timer-wheel240.0A timer wheel (bsd3, data, library)2019-05-19mitchellwrosen
timeseries1040.0Library for Time Series processing (bsd3, data, library)2016-12-28klangner
timezone-olson3200.0A pure Haskell parser and renderer for binary Olson timezone files (bsd3, data, library)2020-04-18YitzGale
timezone-olson-th1390.0Load TimeZoneSeries from an Olson file at compile time. (bsd3, data, library)2020-03-03petterb
timezone-series2870.0Enhanced timezone handling for Data.Time (bsd3, data, library)2018-03-14YitzGale
tiphys280.0Navigating and editing JSON data (bsd3, data, library)2016-01-11llhotka
tmpl110.0simple executable for templating (data, gpl, program)2014-09-25michelk
tn1180.0A simple daily journal program (data, library, program, text, utility)2016-05-17pharpend
to-string-class (deprecated)300.0Converting string-like types to Strings. (bsd3, data, deprecated, library)2009-09-22BasVanDijk
to-string-instances (deprecated)300.0Instances for the ToString class. (bsd3, data, deprecated, library)2009-09-22BasVanDijk
tomato-rubato-openal630.0Easy to use library for audio programming. (bsd3, data, library)2015-10-19HeinrichApfelmus
tomlcheck1370.0Command-line tool to check syntax of TOML files (bsd3, data, program, toml)2019-04-27vmchale
topograph1920.0Directed acyclic graphs. (bsd3, data, graph, library)2020-03-27phadej
tostring1330.0The ToString class (bsd3, data, library)2015-01-26AdamBergmark, ErikHesselink
total-map2390.0Finitely represented total maps (bsd3, data, library)2019-11-23ConalElliott
total-maps460.0Dense and sparse total maps. (containers, data, data-structures, library, mit)2015-11-19pawel834
transaction910.0Monadic representation of transactions. (data, library, mit)2018-03-28arowM
traverse-with-class3660.0Generic applicative traversals (data, library, mit)2019-11-08AdamBergmark, RomanCheplyaka, SjoerdVisscher
tree-diff4832.25Diffing of (expression) trees. (data, gpl, library, testing)2019-05-29phadej
tree-render-text480.0Configurable text rendering of trees. (bsd3, data, library)2020-01-06ThomasEding
tree-traversals460.0Functions and newtype wrappers for traversing Trees (data, library)2019-12-11NoahEasterly
tree-view1770.0Render trees as foldable HTML and Unicode art (bsd3, data, library)2016-10-05EmilAxelsson
treefold540.0Provides folds which try to combine elements in a balanced way. (data, library, mit)2017-10-04oisdk
tries800.0Various trie implementations in Haskell (bsd3, data, library, tree)2020-03-07athanclark
true-name2260.0Template Haskell hack to violate module abstractions (bsd3, data, library, unsafe)2017-08-24LiyangHu
truthful430.0Typeclass for truthfulness of values (data, library, public-domain)2015-09-07Shockk
tskiplist620.0A Skip List Implementation in Software Transactional Memory (STM) (concurrency, data, library)2019-09-24PeterRobinson
ttask280.0This is task management tool for yourself, that inspired by scrum. (bsd3, data, library, program)2016-06-10outoftune
ttc1840.0Textual Type Classes (data, library, mit, text)2020-05-17TravisCardwell
ttl-hashtables1290.0Extends hashtables so that entries added can be expired after a TTL (bsd3, data, library)2019-09-23erick
tup-functor230.0Homogeneous tuples (bsd3, data, library, program)2014-10-31BalazsKomuves
tuple2830.0Various functions on tuples (bsd3, data, library)2014-09-07LennartAugustsson
tuple-gen380.0Enum instances for tuples where the digits increase with the same speed (bsd3, data, library)2012-03-11TillmannVogt
tuple-generic (deprecated)600.0Generic operations on tuples (data, deprecated, library, public-domain)2015-11-25Artyom
tuple-hlist1180.0Functions to convert between tuples and HLists. (data, library)2015-11-16NicolasDudebout
tuple-morph180.0Morph between tuples, or convert them from and to HLists. (data, library, mit)2014-11-22pawel834
tuple-ops500.0various operations on n-ary tuples via GHC.Generics (bsd3, data, library)2019-09-17JiasenWu
tuple-sop1250.0functions on n-ary tuples using generics-sop (data, gpl, library)2018-06-24ferdinandvw
tuple-th1980.0Generate (non-recursive) utility functions for tuples of statically known size (bsd3, data, library, template-haskell)2015-06-28DanielSchuessler
tupleinstances180.0Functor, Applicative and Monad for n-ary tuples. (bsd3, data, library)2010-03-16DiegoEcheverri
tuples500.0Small monomorphic tuples (bsd3, data, library)2019-08-29andrewthad
tuples-homogenous-h98630.0Wrappers for n-ary tuples with Traversable and Applicative/Monad instances. (bsd3, data, library)2013-09-09PetrPudlak
txt (deprecated in favor of text-utf8)1211.25Text (bsd3, data, deprecated, library, text)2019-03-15
ty1120.0Typed type representations and equality proofs (bsd3, data, library)2016-02-25ConalElliott
type210.0Dynamic casting library with support for arbitrary rank type kinds. (bsd3, data)2010-02-09TopiKarvonen
type-aligned1700.0Various type-aligned sequence data structures. (bsd3, data, data-structures, library)2014-12-30AtzeVanDerPloeg
type-combinators1530.0A collection of data types for type-level programming (bsd3, data, library)2016-06-15KyleCarter
type-combinators-quote290.0Quasiquoters for the 'type-combinators' package. (bsd3, data, library)2016-01-26KyleCarter
type-combinators-singletons430.0Interop between /type-combinators/ and /singletons/. (bsd3, data, library)2018-01-21jle
type-equality12520.0Data.Type.Equality compat package (bsd3, data, dependent-types, library)2019-09-06ErikHesselink, phadej, ryanglscott
type-equality-check470.0Type equality check (bsd3, data, library)2016-07-21GwernBranwen, WolfgangJeltsch
type-iso390.0Typeclasses for injective relations and isomorphisms between types. (apache, cast, data, library, types)2019-06-25jtapolczai, jtapolczai2
type-level920.0Type-level programming library (bsd3, data, library)2016-07-08AlfonsoAcosta, HoseinAttarzadeh, LennartAugustsson, ugeorge
type-level-integers330.0Provides integers lifted to the type level (bsd3, data, library)2017-04-06mtesseract
type-level-kv-list430.0A module for hash map like object with type level keys. (data, library, mit)2016-11-06arowM
type-level-natural-number520.0Simple type level natural numbers (bsd3, data, library, type-system)2014-03-30GregoryCrosswhite
type-level-natural-number-induction180.0High-level combinators for performing inductive operations. (bsd3, data, library, type-system)2012-07-23GregoryCrosswhite
type-level-natural-number-operations170.0Basic operations on type-level natural numbers. (bsd3, data, library, type-system)2010-10-14GregoryCrosswhite
type-level-tf200.0Type-level programming library (type families) (bsd3, data, library)2011-10-29CoreyOConnor
type-list (deprecated)1902.0Operations on type-level lists and tuples. (bsd3, data, deprecated, library)2016-06-20mjmrotek
type-map900.0Type-indexed maps (data, library, mit)2019-01-03lyxia
type-structure280.0Type structure analysis (data, library, mit)2014-04-04NikitaVolkov
type-unary3610.0Type-level and typed unary natural numbers, inequality proofs, vectors (bsd3, data, library)2018-04-21ConalElliott
typeable-th750.0Automatic deriving of TypeableN instances with Template Haskell (bsd3, data, library)2014-10-21BennoFuenfstueck
typed-digits190.0Digits, indexed by their base at the type level (data, library, mit)2019-12-12arran
typed-duration570.0Thread delay and timeout functions with typed arguments (bsd3, concurrency, data, library)2017-07-13OmerAgacan
typed-encoding5760.0Type safe string transformations (bsd3, data, library, text)2020-05-31rpeszek
typed-encoding-encoding230.0Bridge between encoding and typed-encoding packages (bsd3, data, library, text)2020-06-01rpeszek
typed-streams240.0A stream based replacement for lists (data, library, mit)2017-03-18clinton
typed-uuid1160.0Phantom-Typed version of UUID (data, library, mit)2020-05-10Norfair
typelevel610.0Useful type level operations (type families and related operators). (apache, data, library)2018-12-18danilo2, iamrecursion
typelevel-tensor830.0Tensors whose ranks and dimensions type-inferred and type-checked. (bsd3, data, library)2013-02-10TakayukiMuranushi
typelits-witnesses1832.25Existential witnesses, singletons, and classes for operations on GHC TypeLits (data, library, mit)2019-06-21jle
typenums1270.0Type level numbers using existing Nat functionality (bsd3, data, library)2018-10-24AdituV
typeparams670.0Lens-like interface for type level parameters; allows unboxed unboxed vectors and supercompilation (bsd3, configuration, data, dependent-types, library, optimization)2015-01-26MikeIzbicki
typerep-map4802.5Efficient implementation of a dependent map with types as keys (data, data-structures, library, mpl, types)2020-04-18shersh, vrom911
typesafe-endian350.0Enforce endianness with types (bsd3, data, library)2013-07-20JohnEricson
typical80.0Type level numbers, vectors, list. This lib needs to be extended. (data, library)2009-02-26RickKaudewitz
tz4652.0Efficient time zone handling (apache, data, library)2020-05-16GergelyRisko, MihalyBarasz
tzdata2452.0Time zone database (as files and as a module) (apache, data, library)2020-01-06MihalyBarasz
ucd500.0Unicode Character Database — Predicates on characters specified by Unicode (bsd3, data, library, text)2019-12-12MatthewFarkasDyck
udcode510.0Does a set of code words form a uniquely decodable code? (bsd3, data, library)2009-01-06WaltBaety
udp-conduit742.0Simple fire-and-forget conduit UDP wrappers (conduit, data, library)2016-10-21kqr
uglymemo1050.0A simple (but internally ugly) memoization function. (data, library, public-domain)2011-10-04LennartAugustsson
uid210.0Simple unique identifier datatype, serializable and encodable as base32 (data, library, mit)2013-08-11PhilHargett
ulid400.0Implementation of ULID - Universally Unique Lexicographically Sortable Identifier (bsd3, codec, data, database, library, program)2020-04-04steven777400, adrian
unamb1830.0Unambiguous choice (bsd3, concurrency, data, library, other)2018-03-16ConalElliott
unamb-custom310.0Functional concurrency with unamb using a custom scheduler. (bsd3, concurrency, data, library)2008-12-24LukePalmer
unboxed190.0All the standard sum types but strict and unboxed as possible (bsd3, data, library)2019-01-01CarterSchonwald
unboxed-containers800.0Self-optimizing unboxed sets using view patterns and data families (bsd3, data, library)2012-05-10EdwardKmett
unboxed-ref1030.0Fast unboxed references for ST and IO monad (bsd3, data, library)2017-07-17winterland, terrorjack
unboxed-references170.0A library for reference cells backed by unboxed-vectors (bsd3, data, library, program)2019-12-16callanmcgill
unboxing-vector420.0A newtype-friendly variant of unboxed vectors (bsd3, data, data-structures, library)2019-07-01aratamizuki
unfix-binders200.0Unfixing and recursion schemes for data types with binders (bsd3, data, library)2018-10-11aspiwack
ungadtagger70.0Abstract GADTs from typelevel tags (bsd3, data, library)2012-09-30AndriyPolishchuk
unicode-transforms6330.0Unicode normalization (bsd3, data, library, text, unicode)2019-06-14harendra
uniform-pair3400.0Uniform pairs with class instances (bsd3, data, library)2018-09-11ConalElliott
union722.0Extensible type-safe unions (bsd3, data, library)2018-10-13int_index
union-find1120.0Efficient union and equivalence testing of sets. (algorithms, bsd3, data, library)2012-06-23ThomasSchilling
union-find-array430.0union find data structure (algorithms, data, library, mit)2015-04-10BertramFelgenhauer, MartinAvanzini
union-map (deprecated)170.0Heterogeneous map by open unions. (bsd3, data, deprecated, library)2015-02-24
unique1760.0Fully concurrent unique identifiers (bsd3, concurrency, data, library)2015-09-28EdwardKmett
uniqueid530.0Splittable Unique Identifier Supply (bsd3, data, library)2009-07-13SebastianFischer
unit380.0Aliases for `()`. (bsd3, data, library)2018-01-15amohrland
universal-binary270.0Parser for OS X Universal Binary format. (bsd3, data, library)2010-03-25ErikCharlebois
universe1910.0A class for finite and recursively enumerable types. (bsd3, data, library)2019-09-12DanielWagner, phadej
universe-base2870.0A class for finite and recursively enumerable types. (bsd3, data, library)2019-06-29DanielWagner, phadej
universe-dependent-sum580.0Universe instances for types from dependent-sum (bsd3, data, library)2020-03-25phadej
universe-instances-base (deprecated in favor of universe-base)370.0Universe instances for types from the base package (bsd3, data, deprecated, library)2019-04-15DanielWagner, phadej
universe-instances-extended620.0Universe instances for types from selected extra packages (bsd3, data, library)2019-09-10DanielWagner, phadej
universe-instances-trans (deprecated in favor of universe-base)440.0Universe instances for types from the transformers and mtl packages (bsd3, data, deprecated, library)2019-04-15DanielWagner, phadej
universe-reverse-instances1310.0Instances of standard classes that are made possible by enumerations (bsd3, data, library)2019-04-15DanielWagner, phadej
universe-some340.0Universe instances for Some from some (bsd3, data, library)2019-09-12phadej
unix-time14860.0Unix time parser/formatter and utilities (bsd3, data, library)2019-06-18KazuYamamoto
unjson1240.0Bidirectional JSON parsing and generation. (bsd3, data, library)2020-05-06GracjanPolak, MikhailGlushenkov, arybczak, jonathanjouty_scrive
unlifted-list160.0GHC Haskell lists of non-thunks (things of kind TYPE 'UnliftedRep) (bsd3, data, library)2018-12-05chessai
unliftio-pool690.0Data.Pool generalized to MonadUnliftIO. (bsd3, control, data, database, library, network)2020-03-20BardurArantsson
unliftio-streams440.0Generalization of io-streams to MonadUnliftIO (apache, data, io-streams, library, network)2019-04-13BardurArantsson
unordered-containers26732.5Efficient hashing-based container types (bsd3, data, library)2019-01-18JohanTibell, dfeuer
unordered-intmap660.0A specialization of `HashMap Int v` (bsd3, data, library)2018-07-01DmitryIvanov
unpacked-maybe-numeric210.0maybes of numeric values with fewer indirections (bsd3, data, library)2019-09-30andrewthad, chessai
unpacked-maybe-text130.0optional text that unpacks well (bsd3, data, library)2019-09-30andrewthad
unsafely190.0Flexible access control for unsafe operations and instances (bsd3, data, library)2014-09-21HiromiIshii
unwrapped-functors290.0Unwrapping sums/products lifted to functors (data, library)2018-07-13int_index
urlpath2190.0Painfully simple URL deployment. (bsd3, data, library, web)2018-11-03athanclark
urn80.0Universal Resource Names (bsd3, data, library)2014-05-24SamTruzjan
urn-random270.0A package for updatable discrete distributions (data, library, mit)2017-07-14kwf, AntalSpectorZabusky
userid4480.0The UserId type and useful instances for web development (bsd3, data, library)2020-05-18DavidFox, JeremyShaw
users-persistent480.0A persistent backend for the users package (data, library, mit)2016-05-22AlexanderThiemann
utc270.0A pragmatic time and date library. (data, library, mit, parsing, time)2015-06-17LarsPetersen
utf8-conversions2242.0A string conversion library that assumes utf8 (bsd3, codec, data, library)2020-05-10chemirea
util-plus160.0A collection of commonly used utils (bsd3, data, library)2017-08-06AlexanderThiemann
utility-ht8882.0Various small helper functions for Lists, Maybes, Tuples, Functions (bsd3, data, library, list)2020-03-21HenningThielemann
uuid11870.0For creating, comparing, parsing and printing Universally Unique Identifiers (bsd3, data, library)2016-12-17AntoineLatter, HerbertValerioRiedel
uuid-aeson392.0Aeson types for UUID instances. (bsd3, data, library)2014-01-15KirkPeterson
uuid-bytes680.0UUID parsing using byteverse packages (data, library, mit)2020-02-12goolord
uuid-le430.0Universally Unique Identifiers with little-endian-ish encoding tools (data, library, mit)2014-09-29StijnVanDrongelen
uuid-quasi440.0Supplemental package for 'uuid' allowing quasiquotation. (bsd3, data, library)2013-10-21LarsPetersen
uuid-types13280.0Type definitions for Universally Unique Identifiers (bsd3, data, library)2016-04-02AntoineLatter, HerbertValerioRiedel
uvector660.0Fast unboxed arrays with a flexible interface (bsd3, data, library)2010-02-15BryanOSullivan, DonaldStewart
uvector-algorithms380.0Efficient algorithms for uvector unboxed arrays (bsd3, data, library)2009-09-08DanDoel
uxadt350.0Cross-language extensible representation for algebraic data type instances. (data, gpl, library)2014-07-22AndreiLapets
validated-literals160.0Compile-time checking for partial smart-constructors (bsd3, data, library)2019-01-10MerijnVerstraaten
validation3562.5A 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
validators190.0Composable validations for your Haskell data types (data, library, mit)2019-10-23luc_tielen
value-supply760.0A library for generating values without having to thread state. (bsd3, data, library)2011-03-18IavorDiatchki
var250.0Mutable variables and tuples (bsd3, data, library)2013-06-10AndySonnenburg
variation420.0nominal value with possible variations (bsd3, data, library)2017-06-10cspollard
vault15640.0a persistent store for values of arbitrary types (bsd3, data, library)2020-04-06HeinrichApfelmus, sjakobi
vcd1100.0Reading and writing VCD files. (bsd3, data, embedded, hardware, library)2012-12-19TomHawkins
vcs-revision520.0Facilities for accessing the version control revision of the current directory. (bsd3, data, library, parsing, system)2014-05-16EugeneKirpichov
vec2140.0Vec: length-indexed (sized) list (bsd3, data, dependent-types, library)2019-12-13phadej
vec-lens260.0Vec: length-indexed (sized) list: lens support (bsd3, data, dependent-types, lens, library)2019-12-13phadej
vec-optics170.0Vec: length-indexed (sized) list: optics support (bsd3, data, dependent-types, library, optics)2019-12-13phadej
vector33262.5Efficient Arrays (bsd3, data, data-structures, library)2020-02-01HerbertValerioRiedel, lehins, Bodigrim, topos
vector-algorithms19762.0Efficient algorithms for vector arrays (bsd3, data, library)2019-12-01BryanOSullivan, DanDoel, ErikDeCastroLopo
vector-binary710.0Binary instances for vector types (deprecated) (bsd3, data, library)2013-05-08JakubWaszczuk
vector-binary-instances9182.25Instances of Data.Binary for vector (bsd3, data, library)2018-11-02BenGamari, BryanOSullivan, DonaldStewart
vector-buffer1840.0A buffer compatible with Data.Vector.* (bsd3, data, library)2015-03-30VivianMcPhail
vector-bytes-instances450.0Serial (from the bytes package) for Vector (from the vector package) (bsd3, data, library)2018-05-22RenzoCarbonara
vector-bytestring340.0ByteStrings as type synonyms of Storable Vectors of Word8s (bsd3, data, library)2012-01-03BasVanDijk
vector-circular170.0circular vectors (data, library, mit)2020-06-04chessai
vector-clock650.0Vector clocks for versioning message flows (data, data-structures, distributed-computing, gpl, library)2013-06-23AlexandruScvortov, hansonkd
vector-conduit690.0Conduit utilities for vectors (data, library, mit)2012-12-31JaredHance
vector-doublezip320.0Some special functions to work with Vector (with zip). (data, library, mit)2020-06-01OleksandrZhabenko
vector-endian150.0Storable vectors with cpu-independent representation. (data, data-structures, library, mit)2019-04-22isd
vector-functorlazy130.0vectors that perform the fmap operation in constant time (bsd3, data, data-structures, library)2013-07-05MikeIzbicki
vector-heterogenous400.0A 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-instances7860.0Orphan Instances for 'Data.Vector' (bsd3, data, data-structures, library)2017-01-08EdwardKmett, ryanglscott
vector-instances-collections290.0Instances of the Data.Collections classes for Data.Vector.* (bsd3, data, library)2012-03-26TobiasBrandt
vector-mmap570.0Memory map immutable and mutable vectors (bsd3, data, data-structures, library)2017-06-30DanielPeebles, fho
vector-random200.0Generate vectors filled with high quality pseudorandom numbers (bsd3, data, library)2010-02-21DonaldStewart
vector-read-instances (deprecated in favor of vector)390.0(deprecated) Read instances for 'Data.Vector' (bsd3, data, data-structures, deprecated, library)2011-08-29ChristianHoener
vector-rotcev200.0Vectors with O(1) reverse (bsd3, data, data-structures, library)2019-10-27Bodigrim
vector-sized4282.25Size tagged vectors (bsd3, data, library)2020-05-04jle, jophish
vector-split700.0Combinator library for splitting vectors. (data, data-structures, library, mit)2017-01-31fho
vector-static (deprecated)600.0Statically checked sizes on Data.Vector (bsd3, data, data-structures, deprecated, library)2010-11-11DanielPeebles, JakeMcArthur
vector-text510.0Text implementation based on unboxed char vector. (apache, data, library)2018-12-18danilo2, iamrecursion
vector-th-unbox9072.0Deriver for Data.Vector.Unboxed using Template Haskell (bsd3, data, library)2019-09-24LiyangHu, phadej
verbosity1570.0Simple enum that encodes application verbosity. (bsd3, data, library)2020-02-16PeterTrsko
versioning540.0Type-safe data versioning. (apache, data, library)2019-01-08lortabac
versioning-servant480.0Servant combinators for the versioning library. (apache, data, library)2018-11-08lortabac
versions8392.25Types and parsers for software version numbers. (bsd3, data, library)2020-05-12fosskers
vflow-types280.0types for ingesting vflow data with aeson (bsd3, data, library, parsing, text, utility)2019-05-21chessai
vinyl-generics280.0Convert plain records to vinyl (and vice versa), generically. (bsd3, data, generics, library)2019-02-19GagandeepBhatia
vinyl-named-sugar240.0Syntax sugar for vinyl records using overloaded labels. (data, library, mit)2019-02-21Solonarv
vocabulary-kadma180.0Smaoin vocabulary definitions of the base framework. (data, library, public-domain)2015-06-18akrasner
vpq280.0Priority queue based on vector (bsd3, data, library)2018-05-03MatthewFarkasDyck
warc2720.0A parser for the Web Archive (WARC) format (bsd3, data, library, program)2018-08-04BenGamari
wavesurfer530.0Parse WaveSurfer files (bsd3, data, library, sound, text)2009-03-23StefanKersten
weak-bag80.0Mutable bag backed by weak pointers to each item (bsd3, data, library)2018-10-04chessai
wide-word2660.0Data types for large but fixed width signed and unsigned integers (bsd2, data, library)2020-03-21ErikDeCastroLopo
winery3070.0A compact, well-typed seralisation format for Haskell values (bsd3, codec, data, library, parsing, program, serialization)2020-06-03FumiakiKinoshita
wire-streams680.0Fast binary io-streams adapter. (bsd3, data, io-streams, library, parsing)2016-09-27winterland
wiring2130.0Wiring, promotion and demotion of types. (bsd3, data, library)2018-08-11seanparsons
with270.0Simple open product type (bsd3, control, data, library)2018-09-16iokasimovmt
with-index120.0A tiny library for composing indexed traversals (bsd3, data, lenses, library)2017-10-14PhilFreeman
with-location (deprecated in favor of call-stack)1220.0Use ImplicitParams-based source locations in a backward compatible way (data, deprecated, library, mit)2016-03-16SimonHengel
witherable3822.5filterable traversable (bsd3, data, library)2019-12-20FumiakiKinoshita
witherable-class680.0Witherable = Traversable + Filterable (bsd3, data, library)2019-12-20FumiakiKinoshita
witness1500.0values that witness types (bsd3, data, library)2016-06-26AshleyYakeley
wizard270.0the fantastical wizard monoid (bsd3, data, library)2019-05-02chessai
wkt2080.0Parsec parsers and types for geographic data in well-known text (WKT) format. (bsd3, data, library)2017-08-29BenGamari
wkt-geom1252.0A parser of WKT, WKB and eWKB. (apache, data, library)2020-04-03newmana
woe360.0Convenient typeclass for defining arbitrary-index enums. (bsd3, data, library)2019-09-20riuga
woffex180.0Web Open Font Format (WOFF) unpacker. (bsd3, data, program)2011-05-01AndrewDrake
woot660.0Real time group editor without operational transform. (data, library, mit)2016-08-05tgolson
word (deprecated)161.25Words of arbitrary size (bsd3, data, deprecated, library, math, numeric)2018-05-14
word-trie1840.0Implementation of a finite trie over words. (data, gpl, library)2015-05-10DmitryIvanov, MateuszKowalczyk
word12 (deprecated)60.0Word12 library. (bsd3, data, deprecated, library)2014-09-07
word241742.024-bit word and int types for GHC (bsd3, data, library)2016-10-25JohnLato, winterland
word89690.0Word8 library (bsd3, data, library)2017-08-01KazuYamamoto
world-peace670.0Open Union and Open Product Types (bsd3, data, library)2019-07-12cdepillabout
wrap410.0Wrap a function's return value with another function (bsd3, data, functions, library)2015-02-06ChrisDone
wraparound340.0Convenient handling of points on a seamless 2-dimensional plane (bsd3, data, library)2012-11-28ChristopherHoward, infrared
wright70.0Colour space transformations and metrics. (data, library, mit)2014-05-16vi
x50921570.0X509 reader and writer (bsd3, data, library)2018-11-04VincentHanquez
x509-store15110.0X.509 collection accessing and storing methods (bsd3, data, library)2018-11-04VincentHanquez
x509-system13960.0Handle per-operating-system X.509 accessors and storage (bsd3, data, library)2017-07-31VincentHanquez
x509-util1600.0Utility for X509 certificate and chain (bsd3, data, program)2018-11-04VincentHanquez
x509-validation18270.0X.509 Certificate and CRL validation (bsd3, data, library)2018-11-04VincentHanquez
xcb-types2230.0Parses XML files used by the XCB project (bsd3, data, library)2019-02-14AntoineLatter, TychoAndersen
xls1100.0Parse Microsoft Excel xls files (BIFF/Excel 97-2004) (bsd3, codec, data, library, parser, program, spreadsheet)2020-05-30harendra
xml-isogen550.0Generate XML-isomorphic types (data, library, mit)2018-04-19typeable
xml-query330.0A parser-agnostic declarative API for querying XML-documents (data, library, mit, parsing, xml)2016-04-04NikitaVolkov
xml-query-xml-conduit230.0A binding for the "xml-query" and "xml-conduit" libraries (data, library, mit, parsing, xml)2016-04-04NikitaVolkov
xml-query-xml-types290.0An interpreter of "xml-query" queries for the "xml-types" documents (data, library, mit, parsing, xml)2016-04-04NikitaVolkov
xor510.0Efficient XOR masking (codec, data, gpl, library)2020-05-17HerbertValerioRiedel
xournal-types1300.0Data types for programs for xournal file format (bsd3, data, library)2016-02-12IanWooKim
xxhash452.25A Haskell implementation of the xxHash algorithm (bsd3, cryptography, data, library)2017-01-13christianmarie, ChristianMarie
yahoo-finance-conduit190.0Streaming aproach to the yahoo finance api (data, library, mit)2014-09-18AlexanderThiemann
yall140.0Lenses with a southern twang (bsd3, data, library)2012-09-21BrandonSimmons
yamemo800.0Simple memoisation function (bsd3, data, library)2014-01-20NobuoYamashita
yaml48992.0Support for parsing and rendering YAML documents. (bsd3, data, library)2020-05-07MichaelSnoyman
yaml-light810.0A light-weight wrapper with utility functions around HsSyck (bsd3, data, library)2010-10-27MichaelIlseman
yaml-light-lens4860.0Lens interface to yaml-light. (bsd3, data, library)2020-02-03AnthonyCowley
yaml-pretty-extras1530.0Extra functionality for pretty printing Yaml documents. (bsd3, data, library)2018-06-28locallycompact
yaml-union650.0Read multiple yaml-files and override fields recursively (bsd3, data, library, program)2017-11-10michelk
yarn-lock1710.0Represent and parse yarn.lock files (data, library, mit)2019-12-22Profpatsch
z85400.0Implementation of the z85 binary codec (bsd3, data, library)2018-12-30athanclark
zalgo (deprecated in favor of functional-kmp)600.0Z-algorithm implemented on haskell's built-in cons-cell-based lists. (bsd3, data, deprecated, library)2015-09-01mniip
zcache190.0Zobrist keys for game state tracking (bsd3, data, library)2010-06-14SamAnklesaria
zero1110.0Semigroups with absorption (bsd3, data, library)2019-05-16DimitriSabadie
zippo280.0A simple lens-based, generic, heterogenous, type-checked zipper library (bsd3, data, library)2012-09-21BrandonSimmons
zlib-conduit (deprecated in favor of conduit-extra)3460.0Streaming compression/decompression via conduits. (deprecated) (bsd3, conduit, data, deprecated, library)2014-04-02MichaelSnoyman
zm550.0Language independent, reproducible, absolute types (bsd3, data, library, reflection)2017-12-11PasqualinoAssini
zsdd860.0Zero-Suppressed and Reduced Decision Diagrams (bsd3, data, library)2020-05-07eddiejones