Package search

Name
DLs
Rating
Description
Tags
Last U/L
Maintainer
JSON-Combinator (deprecated in favor of lens)940.0A combinator library on top of a generalised JSON type (bsd3, combinators, deprecated, json, library)2011-04-03TonyMorris
combinator-interactive260.0SKI Combinator interpreter (bsd3, language, library, program)2013-09-07FumiakiKinoshita
guess-combinator150.0Generate simple combinators given their type (bsd3, development, library)2012-05-16EtienneLaurin
JSON-Combinator-Examples (deprecated in favor of lens)130.0Example uses of the JSON-Combinator library. (bsd3, combinators, deprecated, library)2010-12-20TonyMorris
trifecta10232.0A modern parser combinator library with convenient diagnostics (bsd3, diagnostics, library, logging, parsing, pretty-printer, text)2018-07-03EdwardKmett, EricMertens, quchen, ryanglscott
megaparsec6642.75Monadic parser combinators (bsd2, library, parsing)2018-11-08HerbertValerioRiedel, TikhonJelvis, mrkkrp
parsec6942.75Monadic parser combinators (bsd3, library, parsing)2019-01-06AntoineLatter, HerbertValerioRiedel
parser-combinators4390.0Lightweight package providing commonly useful parser combinators (bsd3, library, parsing)2019-01-01HerbertValerioRiedel, mrkkrp
HaskellForMaths4400.0Combinatorics, group theory, commutative algebra, non-commutative algebra (bsd3, library, math)2018-12-15DavidAmos
polyparse6070.0A variety of alternative parser combinator libraries. (library, parsing, text)2018-10-30MalcolmWallace, phadej
fast-combinatorics332.0Fast combinatorics. (bsd3, library, numerics)2018-01-02
exact-combinatorics470.0Efficient exact computation of combinatoric functions. (bsd3, library, math, statistics)2015-05-30WrenThornton
grammatical-parsers980.0parsers that combine into grammars (bsd3, library, program, text)2018-12-29MarioBlazevic
gll620.0GLL parser with simple combinator interface (bsd3, compilers, library)2018-09-01ltvanbinsbergen
attoparsec13512.75Fast combinator parsing for bytestrings and text (bsd3, library, parsing, text)2018-01-12BasVanDijk, BenGamari, BryanOSullivan
substring-parser150.0Match / replace substrings with a parser combinators. (apache, library, parsing, text)2018-07-22igrep
uu-parsinglib810.0Fast, online, error-correcting, monadic, applicative, merging, permuting, interleaving, idiomatic parser combinators. (library, mit, parsercombinators, parsing, text)2016-04-12DoaitseSwierstra
yoda540.0Parser combinators for young padawans (bsd3, library, text)2018-11-05NicolasWu
parsec3340.0Monadic parser combinators (bsd3, library, parsing)2015-02-16ChristianMaeder
combinatorics (deprecated in favor of exact-combinatorics)160.0Efficient computation of common combinatoric functions. (bsd3, deprecated, library, math, statistics)2012-01-29WrenThornton
inchworm1070.0Simple parser combinators for lexical analysis. (library, mit, parsing)2019-01-02BenLippmeier
IndentParser (deprecated)550.0Combinators for parsing indentation based syntatic structures (deprecated, library, parsing)2007-10-19PiyushKurur
definitive-parser230.0A parser combinator library for the Definitive framework (library, parsers)2014-11-11MarcCoiffier
indents710.0indentation sensitive parser-combinators for parsec (bsd3, library, parsing, text)2018-06-22JasperVanDerJeugt, SamAnklesaria
parsec1240.0Portable monadic parser combinators (bsd3, library, parsing)2015-02-16ChristianMaeder
parsers3052.25Parsing combinators (bsd3, library, parsing, text)2018-07-04EdwardKmett, EricMertens, ryanglscott
parcom-lib320.0A simple parser-combinator library, a bit like Parsec but without the frills (bsd3, library, text)2015-07-08TobiasDammers
paripari910.0Parser combinators with fast-path and slower fallback for error reporting (library, mit, program, text)2018-10-08minad
applicative-parsec190.0An applicative parser combinator library (gpl, language, library)2015-04-09KarlVoelker
permute (deprecated in favor of parser-combinators)140.0Generalised permutation parser combinator (bsd3, deprecated, library, parsing)2011-09-22TroelsHenriksen
parco (deprecated in favor of parser-combinators)100.0Generalised parser combinators (bsd3, deprecated, library, parsing)2013-11-27TroelsHenriksen
parsix140.0Parser combinators with slicing, error recovery, and syntax highlighting (bsd3, library, parsing)2018-06-22OlleFredriksson
ponder110.0PEG parser combinator (library, mit, parsing)2014-03-06matt
parsec2310.0Monadic parser combinators (bsd3, library, parsing)2015-11-17AntoineLatter
uu-tc370.0Haskell 98 parser combinators for INFOB3TC at Utrecht University (bsd3, library, parsing, text)2015-11-11TrevorMcDonell, joaopizani
xml-enumerator-combinators100.0Parser combinators for xml-enumerator and compatible XML parsers. (bsd3, enumerator, library, xml)2011-04-06AristidBreitkreuz
cassette290.0A combinator library for simultaneously defining parsers and pretty printers. (bsd3, library, parsing, text)2012-03-19MathieuBoespflug
parsec-pratt110.0Pratt Parser combinator for Parsec (library, mit, program, text)2016-08-02jh3141
parsimony (deprecated)160.0Monadic parser combinators derived from Parsec (bsd3, deprecated, library, parsing)2012-02-06IavorDiatchki
fastparser222.0A fast, but bare bones, bytestring parser combinators library. (bsd3, library, parsing)2018-08-12SimonMarechal
ebnf-bff150.0Parser combinators & EBNF, BFFs! (ebnf, library, metalanguage, mit, parsing, program, text)2015-09-20Lokidottir
incremental-parser2770.0Generic parser library capable of providing partial results from partial input. (gpl, library, parsing)2018-12-03MarioBlazevic
scanner1110.0Fast non-backtracking incremental combinator parsing for bytestrings (bsd3, library, parsing)2018-08-13YurasShumovich
parco-attoparsec (deprecated in favor of parser-combinators)90.0Generalised parser combinators - Attoparsec interface (bsd3, deprecated, library, parsing)2013-11-27TroelsHenriksen
parco-parsec (deprecated in favor of parser-combinators)80.0Generalised parser combinators - Parsec interface (bsd3, deprecated, library, parsing)2013-11-27TroelsHenriksen
quack110.0Convenience parser combinators for URI query strings (bsd3, library, web)2016-08-30athanclark
PArrows200.0Arrow parser combinators similar to Parsec (bsd3, library, parsing)2009-01-24GwernBranwen
uulib2662.0Haskell Utrecht Tools Library (bsd3, library, parsing)2019-02-14ArieMiddelkoop, AtzeDijkstra, DoaitseSwierstra, JeroenBransen, PhilippHausmann
fast-arithmetic1712.0Fast functions on integers. (algorithms, ats, bsd3, combinatorics, ffi, math, number-theory, numerics)2018-11-23vmchale
tagsoup-megaparsec112.0A Tag token parser and Tag specific parsing combinators (bsd3, library, xml)2016-08-03kseo
uu-interleaved300.0An interleaving combinator for use with applicative style implementations. (applicative, control, library, mit, parsing, text)2018-08-06DoaitseSwierstra
blaze-html14962.25A blazingly fast HTML combinator library for Haskell (bsd3, library, text)2018-06-12JasperVanDerJeugt, SimonMeier
either5042.0Combinators for working with sums (bsd3, control, library, monads)2018-07-03EdwardKmett, ryanglscott, GeorgeWilson
blaze-markup8470.0A blazingly fast markup combinator library for Haskell (bsd3, library, text)2018-09-25DeepakJois, JasperVanDerJeugt
ParsecTools430.0Parsec combinators for more complex objects. (gpl, library, parsing)2010-09-22ChristianHoener
retry6172.5Retry combinators for monadic actions that may fail (bsd3, control, library)2019-01-30MichaelXavier, OzgunAtaman
bytestringparser-temporary410.0Combinator parsing with Data.ByteString.Lazy (bsd3, library, parsing, text)2009-09-15JasonDusek
optparse-applicative9293.0Utilities and combinators for parsing command line options (bsd3, cli, library, options, parsing, system)2018-10-04PaoloCapriotti, huw
picoparsec232.0Fast combinator parsing for bytestrings and text (bsd3, library, parsing, text)2015-08-13MarioBlazevic
tagsoup-parsec160.0Tokenizes Tag, so [ Tag ] can be used as parser input. (bsd3, library, xml)2011-11-29JohnnyMorrice, OzgunAtaman
hspec-expectations2980.0Catchy combinators for HUnit (library, mit, testing)2016-10-16SimonHengel, SoenkeHahn
language-pig220.0Pig parser in haskell. (language, library, mit)2013-12-16elisehuard
servant4393.0A family of combinators for defining webservices APIs (bsd3, library, servant, web)2018-11-13AlpMestanogullari, SoenkeHahn, ChristianMarie, phadej, jkarni
config-parser1760.0Parse config files using parsec and generate parse errors on unhandled keys (library, mit, text)2018-01-21BenHamlin
phaser170.0Incremental multiple pass parser library. (bsd3, library, text)2018-11-20quick_dudley
split3392.25Combinator library for splitting lists. (bsd3, library, list)2018-01-24BrentYorgey
servant-server3382.5A family of combinators for defining webservices APIs and serving them (bsd3, library, program, servant, web)2018-11-13AlpMestanogullari, SoenkeHahn, ChristianMarie, phadej, jkarni
bytestringreadp230.0A ReadP style parser library for ByteString (bsd3, library, text)2007-12-13GracjanPolak
xhtml2940.0An XHTML combinator library (bsd3, library, pretty-printer, web, xml)2018-03-09BenGamari, BjornBringert, ChrisDornan, HerbertValerioRiedel, IanLynagh
sax200.0Monadic streaming XML parser (bsd3, library, sax, text)2018-04-13dredozubov
composition-prelude3190.0Higher-order function combinators (bsd3, control, data, library)2018-11-27vmchale
parsec-parsers (deprecated in favor of parsers)630.0Parsing instances for Parsec (bsd3, deprecated, library, parsing, text)2013-11-05DagOdenhall, EdwardKmett
parsec-tagsoup140.0Parsec parsers for Tagsoup tag streams (library, public-domain, xml)2011-12-30PepeIborra
html1590.0HTML combinator library (bsd3, library, web)2008-10-11DonaldStewart
XSaiga1592.0An implementation of a polynomial-time top-down parser suitable for NLP (attribute-grammars, bsd3, library, memoization, natural-language-processing, parsercombinators, parsing, program, text)2018-02-09InBetweenNames
data-hash1620.0Combinators for building fast hashing functions. (bsd3, data, library)2015-05-20DanielGorin
blaze-svg2802.0SVG combinator library (bsd3, graphics, library)2017-03-13BrentYorgey, DeepakJois
combinatorial400.0Count, enumerate, rank and unrank combinatorial objects (bsd3, library, math, statistics)2018-08-31HenningThielemann
frisby360.0Linear time composable parser for PEG grammars (bsd3, library, text)2017-12-20BenGamari, ChrisDone
parallel-io2460.0Combinators for executing IO actions in parallel on a thread pool. (bsd3, concurrency, library)2012-12-24MaxBolingbroke
servant-auth1490.0Authentication combinators for servant (authentication, bsd3, library, servant, web)2018-06-18AlpMestanogullari, phadej, jkarni, mchaver, domenkozar
invertible-grammar920.0Invertible parsing combinators framework (bsd3, language, library)2019-02-08EugeneSmolanka
formatting4982.0Combinator-based type-safe formatting (like printf() or FORMAT) (bsd3, library, text)2019-01-02ChrisDone
tasty11122.5Modern and extensible testing framework (library, mit, testing)2019-01-31EdwardKmett, OliverCharles, RomanCheplyaka, bergey
monad-par-extras1630.0Combinators and extra features for Par monads (bsd3, control, library, monads, parallelism)2013-07-12RyanNewton
argparser550.0Command line parsing framework for console applications (bsd3, console, library)2014-11-27sbergot
data-memocombinators1032.0Combinators for building memo tables. (bsd3, data, library)2013-12-14DmitryMalikov, LukePalmer, ThomasDuBuisson
permutation1690.0A library for permutations and combinations. (bsd3, data-structures, library, math)2015-01-20PatrickPerry, spacekitteh
scc240.0Streaming component combinators (combinators, concurrency, control, library, program)2016-06-19MarioBlazevic
kure2900.0Combinators for Strategic Programming (bsd3, language, library)2015-09-15AndyGill, NeilSculthorpe
QuickCheck12272.75Automatic testing of Haskell programs (bsd3, library, testing)2018-10-02DonaldStewart, KoenClaessen, NickSmallbone, SimonMarlow
composition1850.0Combinators for unorthodox function composition (bsd3, data, library)2015-12-31DanBurton
JsonGrammar950.0Combinators for bidirectional JSON parsing (bsd3, json, language, library)2016-10-07MartijnVanSteenbergen
functor-combo2230.0Functor combinators with tries & zippers (bsd3, data, library)2015-05-04ConalElliott
digit2962.0A data-type representing digits 0-9 and other combinations (bsd3, data, library)2018-09-04TonyMorris, qfpl
orgmode-parse2450.0A collection of Attoparsec combinators for parsing org-mode flavored documents. (bsd3, data, library)2018-10-31ParnellSpringmeyer
servant-github-webhook1280.0Servant combinators to facilitate writing GitHub webhooks. (library, mit, web)2018-04-07tsani
between650.0Function combinator "between" and derived combinators (bsd3, data, library)2016-01-09PeterTrsko
pappy160.0Packrat parsing; linear-time parsers for grammars in TDPL. (bsd3, program, text)2012-10-21ChrisDone
pipes-fluid1020.0Reactively combines Producers so that a value is yielded as soon as possible. (bsd3, control, frp, library, pipes)2018-06-01louispan
logging-effect-extra-handler300.0Handy logging handler combinators (library, mit, other, program)2018-08-06jship
string-combinators430.0Polymorphic functions to build and combine stringlike values (bsd3, data, library)2014-06-13BasVanDijk
decidable1120.0Combinators for manipulating dependently-typed predicates. (bsd3, dependent-types, library)2018-10-30jle
NumberTheory280.0A library for number theoretic computations, written in Haskell. (gpl, library, math)2016-02-17cfredric
linear3692.5Linear Algebra (algebra, bsd3, library, math)2018-07-03AnthonyCowley, EdwardKmett, EricMertens, ryanglscott
indentation1490.0Indentation sensitive parsing combinators for Parsec and Trifecta (bsd3, library, parsing)2018-10-06MichaelAdams, OmerAgacan, AlekseyKliger
luthor140.0Tools for lexing and utilizing lexemes that integrate with Parsec. (bsd3, language, library, text)2015-11-25ZankokuOkuno
composition-extra1960.0Combinators for unorthodox structure composition (bsd3, data, library)2015-09-17athanclark
xilinx-lava310.0The Lava system for Xilinx FPGA design with layout combinators. (bsd3, hardware, library, program)2014-08-21SatnamSingh
binary-parsers1170.0Extends binary with parsec/attoparsec style parsing combinators. (bsd3, data, library)2016-09-28winterland
servant-snap242.0A family of combinators for defining webservices APIs and serving them (bsd3, library, program, web)2018-07-21imalsogreg
graph-rewriting-ski2100.0Two evalutors of the SKI combinator calculus as interactive graph rewrite systems (application, bsd3, compilers-interpreters, program)2017-05-23JanRochel
data-aviary330.0Combinator birds. (bsd3, combinators, library)2013-04-24StephenTetley
servant-matrix-param150.0Matrix parameter combinator for servant (library, mit, web)2016-11-03SoenkeHahn, jkarni
indentation-core770.0Indentation sensitive parsing combinators core library (bsd3, library, parsing)2018-10-06AlekseyKliger
hspec-expectations-pretty-diff400.0Catchy combinators for HUnit (library, mit, testing)2016-03-27myfreeweb
pointless-fun270.0Some common point-free combinators. (bsd3, combinators, composition, library, utils)2015-05-30WrenThornton
cv-combinators580.0Functional Combinators for Computer Vision (ai, gpl, graphics, library, program)2015-08-12NoamLewis
async-extra550.0Useful concurrent combinators (library, mit, web)2017-05-28AlexanderThiemann
indentation-parsec710.0Indentation sensitive parsing combinators for Parsec (bsd3, library, parsing)2018-10-06AlekseyKliger
hashable5101.75A class for types that can be converted to a hash value (bsd3, data, library)2018-03-07BryanOSullivan, HerbertValerioRiedel, JohanTibell, MilanStraka
servant-namedargs580.0Combinators for servant providing named parameters (bsd3, library, servant, web)2019-01-25CullinPoresky
binary-ieee754540.0Backport ieee754 float double combinators to older binary (bsd3, data, library)2016-10-24winterland
lens-simple670.0simplified import of elementary lens-family combinators (bsd3, lenses, library)2016-06-23MichaelThompson
aeson-filthy850.0Several newtypes and combinators for dealing with less-than-cleanly JSON input. (bsd3, json, library, text, web)2019-01-27AlecHeller
sexp-grammar1570.0Invertible grammar combinators for S-expressions (bsd3, language, library)2019-02-08EugeneSmolanka, SergeyVinokurov
servant-streaming250.0Servant combinators for the 'streaming' package (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
indentation-trifecta550.0Indentation sensitive parsing combinators for Trifecta (bsd3, library, parsing)2018-10-06AlekseyKliger
validate-input530.0Input validation combinator library (library, mit, web)2015-11-04AlexanderThiemann
io-streams7242.5Simple, composable, and easy-to-use stream I/O (bsd3, data, io-streams, library, network)2019-01-28DougBeardsley, GregoryCollins
show-combinators340.0Combinators to write Show instances (library, mit, text)2019-01-11lyxia
chalkboard340.0Combinators for building and processing 2D images. (bsd3, graphics, library)2009-12-02AndyGill
couchdb-conduit1960.0Couch DB client library using http-conduit and aeson (bsd3, conduit, database, library)2012-11-02AlexanderDorofeev
amazonka-iam-policy400.0Amazon IAM Policy Document DSL and Combinators. (aws, cloud, library, mpl, network)2018-08-14BrendanHay
shade770.0A control structure used to combine heterogenous types with delayed effects. (bsd3, control, library)2017-05-20fredefox
vector-split370.0Combinator library for splitting vectors. (data, data-structures, library, mit)2017-01-31fho
elm-hybrid220.0Combine Elm with Haskell for data based applications (bsd3, library, web)2016-07-04matsrietdijk
versioning-servant120.0Servant combinators for the versioning library. (apache, data, library)2018-11-08lortabac
glue-core1752.0Make better services and clients. (bsd3, library, network)2019-02-16seanparsons
haskelldb350.0A library of combinators for generating and executing SQL statements. (bsd3, database, library)2014-09-29BjornBringert, JustinBailey
sv310.0Encode and decode separated values (CSV, PSV, ...) (bsd3, csv, library, text, web)2019-01-14qfpl
test-shouldbe (deprecated in favor of hspec-expectations)110.0Catchy combinators for HUnit (deprecated, library, mit, testing)2015-04-04
control-bool720.0Useful combinators for boolean expressions (bsd3, control, library)2013-12-08FumiakiKinoshita
array-memoize520.0Memoization combinators using arrays for finite sub-domains of functions (bsd3, library, syntax)2014-04-04DominicOrchard
base5602.75Basic libraries (bsd3, library, prelude)2018-09-23AustinSeipp, HerbertValerioRiedel, IanLynagh, PaoloCapriotti
dph-lifted-vseg270.0Data Parallel Haskell lifted array combinators. (bsd3, data-structures, library)2012-10-25BenLippmeier
tax110.0Types and combinators for taxes (agpl, finance, library)2018-08-23frasertweedale
selections600.0Combinators for operating with selections over an underlying functor (bsd3, data-structures, functors, library)2017-08-12ChrisPenner
grammar-combinators380.0A parsing library of context-free grammar combinators. (library, parsing)2013-01-02DominiqueDevriese
mvc-updates180.0Concurrent and combinable updates (bsd3, concurrency, control, library)2014-09-23GabrielGonzalez
conduit-audio800.0Combinators to efficiently slice and dice audio streams (bsd3, library, sound)2017-09-02mtolly
servant-ede130.0Combinators for rendering EDE templates in servant web applications (bsd3, library, program, web)2016-09-16AlpMestanogullari
caseof390.0Combinators for casing on constructors (bsd3, development, library)2018-03-07ChrisDone
data-emoticons350.0Combinator emoticons: data-aviary in the flavor of emoticons (bsd3, combinators, library)2017-04-23lbq
function-combine160.0Combining functions (bsd3, control, library)2011-09-23IainAlexander
plumbers140.0Pointless plumbing combinators (acme, bsd3, library)2018-01-11MichaelSloan
SimpleH (deprecated in favor of definitive-base)340.0A light, clean and powerful Haskell utility library (deprecated, library, prelude)2013-11-28MarcCoiffier
async-combinators170.0Async combinators (concurrency, library, mpl)2018-07-23vrom911
functor-monadic250.0Monad-style combinators for functors. (apache, data, library)2015-05-17jtapolczai, jtapolczai2
mcmc-samplers132.0Combinators for MCMC sampling (bsd3, library, machine-learning, math, numeric, statistics)2014-11-10pravnar, z
extensible4470.0Extensible, efficient, optics-friendly data types and effects (bsd3, data, library, monads, records)2018-12-19FumiakiKinoshita
xhtml-combinators140.0Fast and easy to use XHTML combinators. (bsd3, library, text, web)2011-06-07AlasdairArmstrong
halves310.0Split or combine data structures to and from halves, quarters, eighths (bsd3, data, library)2018-10-15puffnfresh
FPretty460.0Efficient simple pretty printing combinators (bsd3, library, text.prettyprint)2015-11-16OlafChitil
servant-zeppelin460.0Types and definitions of servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
grids730.0 (bsd3, data-structures, library)2019-01-22ChrisPenner
fadno-xml590.0XML/XSD combinators/schemas/codegen (bsd2, library, music, xml)2018-03-18spopejoy
foldl6772.5Composable, streaming, and efficient left folds (bsd3, control, library)2018-10-03GabrielGonzalez
bytestringparser310.0Combinator parsing with Data.ByteString.Lazy (bsd3, library, parsing, text)2008-01-27BryanOSullivan
reproject280.0Define and combine "materialized" projections (bsd3, library, web)2017-06-16AlexanderThiemann
quiver-cell100.0Quiver combinators for cellular data processing (bsd3, control, library)2015-08-31patrykz
text-lips270.0Monadic parsing combinator library with attention to locations (bsd3, library, parsing, text)2017-07-29MikhailVorozhtsov
numbering130.0Combinators for creating bijections from some type to the natural numbers. (bsd3, data, library)2012-03-10DanielSchuessler
servant-zeppelin-swagger380.0Swagger instances for servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
quiver-bytestring130.0Quiver combinators for bytestring streaming (bsd3, control, library)2015-09-13patrykz
linkcore180.0Combines multiple GHC Core modules into a single module (bsd3, language, program)2010-05-25TimChevalier
capability310.0Extensional capabilities and deriving combinators (bsd3, control, library)2018-10-09aherrmann
antiquoter250.0Combinator library for quasi- and anti-quoting. (bsd3, library, template-haskell)2013-04-14LarsCorbijn
lens22492.75Lenses, Folds and Traversals (bsd2, data, generics, lenses, library)2018-07-03EdwardKmett, EricMertens, JohnWiegley, ryanglscott
parsec-numeric240.0Parsec combinators for parsing Haskell numeric types. (library, parsing)2017-01-07andrewrademacher
servant-zeppelin-server380.0Server library for servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
type-level-natural-number-induction90.0High-level combinators for performing inductive operations. (bsd3, data, library, type-system)2012-07-23GregoryCrosswhite
type-combinators-singletons410.0Interop between /type-combinators/ and /singletons/. (bsd3, data, library)2018-01-21jle
lambdacube-bullet (deprecated)120.0Example for combining LambdaCube and Bullet (bsd3, deprecated, graphics, library, physics)2011-06-23CsabaHruska
rose-trie790.0Trees with polymorphic paths to nodes, combining properties of Rose Trees and Tries. (data, gpl, library)2017-03-27RaminHonary
treersec100.0Structure Editing Combinators (bsd2, gui, library)2015-11-13JasonPriestley
sec90.0Semantic Editor Combinators. (bsd3, combinators, data, library)2010-03-30SteffenSiering
servant-zeppelin-client410.0Client library for servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
treefold100.0Provides folds which try to combine elements in a balanced way. (data, library, mit)2017-10-04oisdk
strictly80.0Combinators for strictifying functions (bsd3, control, library)2013-08-14DanBurton
compstrat270.0Strategy combinators for compositional data types (bsd3, generics, language, library)2015-03-24JamesKoppel
yaml-combinators620.0YAML parsing combinators for improved validation and error reporting (library, mit, text)2018-06-07RomanCheplyaka
kure-your-boilerplate150.0Generator for Boilerplate KURE Combinators (bsd3, language, library)2009-01-27AndyGill
altcomposition280.0Alternative combinators for unorthodox function composition (bsd3, data, library)2016-07-26jcristovao
xml-enumerator (deprecated in favor of xml-conduit)510.0Pure-Haskell utilities for dealing with XML with the enumerator package. (deprecated) (bsd3, deprecated, enumerator, library, xml)2012-01-02MichaelSnoyman
jason110.0A fast JASONETTE-iOS JSON combinator library for haskell. (bsd3, library, program, value)2016-11-10Lupino
plex170.0run a subprocess, combining stdout and stderr (library, mit, system)2018-04-04phlummox
parsec-utils130.0Utility functions and combinators for Text.Parsec (bsd3, library, parsing)2012-11-06RemcoNiemeijer
dph-lifted-copy180.0Data Parallel Haskell lifted array combinators. (deprecated version) (bsd3, data-structures, library)2012-10-25BenLippmeier
type-combinators-quote100.0Quasiquoters for the 'type-combinators' package. (bsd3, data, library)2016-01-26KyleCarter
Zwaluw140.0Combinators for bidirectional URL routing (bsd3, library, text)2010-11-07MartijnVanSteenbergen
quickcheck-property-comb100.0Combinators for Quickcheck Property construction and diagnostics (library, public-domain, testing)2013-12-26jfeltz
bidirectionalization-combined220.0Prototype Implementation of Combining Syntactic and Semantic Bidirectionalization (ICFP'10) (language, program, public-domain)2010-09-27JoachimBreitner
srcloc2370.0Data types for managing source code locations. (bsd3, data, library)2018-03-30GeoffreyMainland
syntax710.0Reversible parsing and pretty-printing. (data, library, mit)2014-12-12pawel834
cflp1170.0Constraint Functional-Logic Programming in Haskell (bsd3, control, library)2009-06-04SebastianFischer
HTTP14172.0A library for client-side HTTP (bsd3, library, network)2018-06-09BjornBringert, BryanOSullivan, DonaldStewart, DuncanCoutts, GaneshSittampalam, JohanTibell, SigbjornFinne
monad-lgbt230.0Monad transformers for combining local and global state. (bsd2, control, library)2016-07-23MichalGajda
quiver-csv100.0Quiver combinators for cellular CSV data processing (bsd3, control, library)2015-08-04patrykz
iteratee1400.0Iteratee-based I/O (bsd3, data, library, system)2014-05-19JohnLato
repa1592.0High performance, regular, shape polymorphic parallel arrays. (bsd3, data-structures, library)2018-10-03BasVanDijk, BenLippmeier, PepeIborra, TrevorMcDonell
interleave90.0Combinators for supporting interleaving of different behaviours (bsd3, control, library)2011-01-07NeilBrown
lens-prelude130.0Alternate prelude that exports lens combinators (bsd3, library, web)2015-10-27andrewthad
redHandlers90.0Monadic HTTP request handlers combinators to build a standalone web apps. (library, web)2009-05-15SergioUrinovsky
derp-lib140.0combinators based on parsing with derivatives (derp) package (bsd3, library, text)2011-11-11KiYungAhn
Yampa4412.5Elegant Functional Reactive Programming Language for Hybrid Systems (bsd3, frp, library, reactivity)2018-11-03GeorgeGiorgidze, IvanPerez, keera_studios_ci
graph-rewriting-cl (deprecated in favor of graph-rewriting-trs)140.0Interactive graph rewriting system implementing various well-known combinators (application, bsd3, deprecated, graphs, program)2011-02-07JanRochel
ad12002.5Automatic Differentiation (bsd3, library, math)2018-01-19EdwardKmett, EricMertens, ryanglscott
proof-combinators180.0Proof Combinators used in Liquid Haskell for Theorem Proving (library, mit, theorem-proving)2018-03-28nikivazou
lucid4522.5Clear to write, read and edit DSL for HTML (bsd3, library, web)2018-10-20ChrisDone, phadej
servant-auth-server780.0servant-server/servant-auth compatibility (authentication, bsd3, library, servant, web)2019-01-17AlpMestanogullari, phadej, jkarni, mchaver, domenkozar
COrdering430.0An algebraic data type similar to Prelude Ordering. (bsd3, data, library)2008-07-23AdrianHey
functional-arrow150.0Combinators that allow for a more functional/monadic style of Arrow programming (bsd3, combinators, library)2010-09-26HenningThielemann
couchdb-enumerator590.0Couch DB client library using http-enumerator and aeson (bsd3, database, library, web)2012-03-13JohnLenz
checkers2302.0Check properties on standard classes and data structures. (bsd3, library, testing)2018-08-03ConalElliott
MonadCatchIO-mtl-foreign (deprecated)130.0Polymorphic combinators for working with foreign functions (bsd3, control, deprecated, library)2010-05-29AntoineLatter
MonadCatchIO-transformers-foreign (deprecated)150.0Polymorphic combinators for working with foreign functions (bsd3, control, deprecated, library)2010-05-29AntoineLatter
these3432.5An either-or-both data type & a generalized 'zip with padding' typeclass (bsd3, control, data, library)2019-01-26JohnWiegley, phadej, cmccann
ess120.0The type-level S combinator in Haskell. (data, library, mit)2015-04-25MichaelOChurch
irc650.0A small library for parsing IRC messages. (bsd3, data, library, network)2014-12-16TrevorElliott
pipes-cellular210.0Pipes-based combinators for cellular data processing (bsd3, control, library, pipes)2015-07-07patrykz
threepenny-editors3230.0Composable algebraic editors (bsd3, library, web)2018-10-07PepeIborra
termination-combinators100.0Termination combinators for forcing non-terminating algorithms to terminate (bsd3, language, library)2011-09-19MaxBolingbroke
servant-auth-client400.0servant-client/servant-auth compatibility (authentication, bsd3, library, servant, web)2018-06-18AlpMestanogullari, phadej, jkarni, mchaver, domenkozar
regex-tdfa-utf880.0This combines regex-tdfa with utf8-string to allow searching over UTF8 encoded lazy bytestrings. (bsd3, library, text)2009-03-22ChrisKuklewicz
moe430.0html with style (bsd3, library, web)2015-05-03JinjingWang
allocated-processor240.0Functional combinators for monadic actions that require allocation and de-allocation (bsd3, control, library)2010-05-23NoamLewis
hath1772.0Hath manipulates network blocks in CIDR notation. (agpl, program, utils)2017-04-21MichaelOrlitzky
numhask-prelude1120.0A numeric prelude (bsd3, library, mathematics)2018-06-16tonyday567
HCodecs3210.0A library to read, write and manipulate MIDI, WAVE, and SoundFont2 files. (bsd3, codec, library)2018-05-01GeorgeGiorgidze, DonyaQuick, Mokosha
ADPfusion3230.0Efficient, high-level dynamic programming. (algorithms, bioinformatics, bsd3, data-structures, formal-languages, library)2017-03-06ChristianHoener
derp320.0Derivative Parsing (bsd3, library, parsing)2012-03-28DavidDarais
authoring620.0A library for writing papers (bsd3, library, text)2014-07-07TakayukiMuranushi
servant-streaming-docs150.0Client instances for the 'servant-docs' package. (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
islink260.0Check if an HTML element is a link (bsd3, html, library, xml)2014-10-07MariosTitas
monad-parallel2060.0Parallel execution of monadic computations (bsd3, control, library, monads)2018-02-25MarioBlazevic
ivor (deprecated in favor of idris)370.0Theorem proving library based on dependent type theory (bsd3, dependent-types, deprecated, library, theorem-provers)2011-06-16EdwinBrady, GwernBranwen
fields110.0First-class record field combinators with infix record field syntax. (bsd3, data, library)2010-08-11JussiKnuuttila
STMonadTrans2810.0A monad transformer version of the ST monad (bsd3, library, monads)2017-02-09JosefSvenningsson
microlens9042.5A tiny lens library with no dependencies. If you're writing an app, you probably want microlens-platform, not this. (bsd3, data, lenses, library)2018-11-03Artyom
servant-auth-docs1170.0servant-docs/servant-auth compatibility (authentication, bsd3, library, servant, web)2018-06-18AlpMestanogullari, phadej, jkarni, mchaver, domenkozar
morphisms330.0It's all about functions (control, data, library, mit)2019-01-04iokasimovmt
lens-action490.0Monadic Getters and Folds (bsd3, data, generics, lenses, library)2018-01-19EdwardKmett, EricMertens, ryanglscott
pointless-lenses180.0Pointless Lenses library (bsd3, generics, library)2012-01-26HugoPacheco
querystring-pickle180.0Picklers for de/serialising Generic data types to and from query strings (data, library, network, web)2014-06-23BrendanHay
gitlib3812.0API library for working with Git repositories (ffi, library, mit)2018-05-31JohnWiegley
deepseq-generics2510.0GHC.Generics-based Control.DeepSeq.rnf implementation (bsd3, control, library)2016-01-03HerbertValerioRiedel
unbound-generics2132.0Support for programming with names and binders using GHC Generics (bsd3, language, library)2018-09-18AlekseyKliger
hoist-error960.0Some convenience facilities for hoisting errors into a monad (control, library, mit)2018-06-15JonSterling, schalmers, qfpl
time-patterns180.0Patterns for recurring events (bsd3, data, library, time)2018-07-02jfmueller
servant-auth-swagger790.0servant-swagger/servant-auth compatibility (authentication, bsd3, library, servant, web)2018-06-18AlpMestanogullari, phadej, jkarni, mchaver, domenkozar
lens-family-core2580.0Haskell 98 Lens Families (bsd3, data, lenses, library)2018-09-27RussellOConnor
nest370.0 (bsd3, library, unclassified)2018-05-03MarkHibberd, lambda_foo
invertible-syntax180.0Invertible syntax descriptions for both parsing and pretty printing. (bsd3, library, text)2011-09-21TillmannRendel
unbound2110.0Generic support for programming with names and binders (bsd3, compilers-interpreters, generics, language, library)2018-10-15BrentYorgey, sweirich
graph-rewriting-layout1500.0Force-directed node placement intended for incremental graph drawing (bsd3, graphics, graphs, library)2017-05-23JanRochel
monad-par2072.25A library for parallel programming based on a monad (bsd3, control, library, monads, parallelism)2016-06-16RyanNewton, SimonMarlow
Annotations850.0Constructing, analyzing and destructing annotated trees (bsd3, generics, library)2016-12-05MartijnVanSteenbergen
lens-family2282.0Lens Families (bsd3, data, lenses, library)2018-09-27RussellOConnor
HUnit-approx480.0Approximate equality for floating point numbers with HUnit (bsd3, library, testing)2017-10-31RichardEisenberg
yst3080.0Builds a static website from templates and data in YAML or CSV files. (program, text)2018-03-08JohnMacFarlane
wai-predicates2390.0WAI request predicates (library, web)2017-08-06ToralfWittner
waitfree150.0A wrapping library for waitfree computation. (concurrency, library, mit, system)2011-06-07YoichiHirai
pointless-rewrite110.0Pointless Rewrite library (bsd3, generics, library)2012-01-26HugoPacheco
kangaroo190.0Binary parsing with random access. (bsd3, library, parsing)2010-02-23StephenTetley
monad-memo952.0Memoization monad transformer (bsd3, control, library, monad)2018-08-31EduardSergeev
crypto-enigma1432.0An Enigma machine simulator with display. (bsd3, cryptography, education, library, program)2019-01-10Orome
wai-request-spec190.0Declarative request parsing (bsd3, library, network, wai)2016-12-30alleledev
control-monad-exception1830.0Explicitly typed, checked exceptions with stack traces (control, failure, library, mit, monads)2015-03-12PepeIborra
fclabels7412.25First class accessor labels implemented as lenses. (bsd3, data, lenses, library)2018-02-13AdamBergmark, ErikHesselink, SebastiaanVisser
acme-php380.0The flexibility of Haskell and the safety of PHP (acme, bsd3, library)2016-04-20JoeQuinn
pipes-async110.0A higher-level interface to using concurrency with pipes (bsd3, control, library)2018-07-23JohnWiegley
murder250.0MUtually Recursive Definitions Explicitly Represented (development, library)2013-11-12MarcosViera
rematch260.0A simple api for matchers (control, library, mit)2013-05-19TomCrayford
overhang342.25Hang loose with your lambdas! (combinators, functions, library, mit, utility)2018-02-02jship
yaya620.0Total recursion schemes. (agpl, library, recursion)2019-01-09sellout
log-effect-syslog200.0Syslog functions for log-effect (bsd3, control, effect, library, logging, syslog)2018-05-10sickmind
servant-streaming-client180.0Client instances for the 'servant-streaming' package. (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
sdl2-compositor190.0image compositing with sdl2 - declarative style (gpl, graphics, library)2017-06-12seppeljordan
records210.0A flexible record system (bsd3, data, library, records)2012-01-15WolfgangJeltsch
funcons-values630.0Library providing values and operations on values in a fixed universe. (compilers-interpreters, library, mit)2018-12-14ltvanbinsbergen
servant-streaming-server160.0Server instances for the 'servant-streaming' package. (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
declarative1690.0DIY Markov Chains. (library, math, mit)2018-03-14JaredTobin
quiver-interleave500.0Interleave values from multiple Quivers (control, library, mit)2016-11-26IvanMiljenovic
TrieMap1360.0Automatic type inference of generalized tries with Template Haskell. (algorithms, bsd3, library)2013-04-18LouisWasserman
concatenative630.0A library for postfix control flow. (bsd3, control, library)2010-07-02SamAnklesaria
hurdle180.0Extract function names from Windows DLLs. (bsd3, program, system)2010-02-24StephenTetley
haphviz340.0Graphviz code generation with Haskell (library, mit, text)2016-12-02Norfair
xml-picklers610.0XML picklers based on xml-types, ported from hexpat-pickle (bsd3, library, xml)2015-04-01PhilippBalzarek
netwire-vinylglfw-examples130.0Netwire/GLFW/VinylGL input handling demo (game, mit, program)2016-10-22RandKleisli
non-empty1070.0List-like structures with static restrictions on the number of elements (bsd3, data, library)2019-01-19HenningThielemann
compilation260.0Haskell functionality for quickly assembling simple compilers. (compilers-interpreters, gpl, language, library)2013-08-20AndreiLapets
mulang300.0An intermediate language designed to perform advanced code analysis (language, library, program)2019-01-11flbulgarelli
rmonad330.0Restricted monad library (bsd3, control, library)2013-12-23GaneshSittampalam
onama520.0HTML-parsing primitives for Parsec. (bsd3, library, text)2017-02-09williamyaoh
binary-search1550.0Binary and exponential searches (algorithms, bsd3, library)2016-01-22RossPaterson, TakayukiMuranushi
data-accessor2770.0Utilities for accessing and manipulating fields of records (bsd3, data, library)2018-08-31HenningThielemann, LukePalmer
bf-cata240.0 (development, library)2010-10-16ArieMiddelkoop
DSH3170.0Database Supported Haskell (bsd3, database, library, program)2015-06-03GeorgeGiorgidze, JeroenWeijers, AlexUlrich, AlexUlrich2
comfort-array2410.0Arrays where the index type is a function of the shape type (bsd3, data-structures, library)2019-02-13HenningThielemann
mtl-prelude490.0Reexports of most definitions from "mtl" and "transformers" (library, mit, prelude)2016-05-24NikitaVolkov
tardis572.0Bidirectional state monad transformer (bsd3, control, library)2016-04-25DanBurton
constraint-manip360.0Some conviencience type functions for manipulating constraints. (control, library, mit)2017-10-16clinton
set-monad610.0Set monad (bsd3, data, library, monad)2018-10-11GeorgeGiorgidze
tasty-rerun2870.0Run tests by filtering the test tree depending on the result of previous test runs (bsd3, library, testing)2018-12-28OliverCharles
MFlow3360.0stateful, RESTful web framework (application-server, bsd3, library, web)2015-09-21AlbertoCorona
polysoup210.0Online XML parsing with polyparse and tagsoup (bsd3, library, xml)2016-10-26JakubWaszczuk
wraxml230.0Lazy wrapper to HaXML, HXT, TagSoup via custom XML tree structure (library, xml)2016-07-27HenningThielemann
local-search210.0Generalised local search within Haskell, for applications in combinatorial optimisation. (control, library, local-search, optimisation)2013-07-18RichardSenington
TV700.0Tangible Values -- composable interfaces (bsd3, interfaces, library)2013-08-14ConalElliott
process-iterio110.0IterIO Process Library (bsd3, library, system)2012-11-05GregFitzgerald
funcons-tools680.0A modular interpreter for executing funcons (compilers-interpreters, library, mit, program)2018-12-14ltvanbinsbergen
friday600.0A functional image processing library for Haskell. (graphics, lgpl, library)2016-12-17RaphaelJavaux, ThomasDuBuisson
iteratee-mtl (deprecated in favor of iteratee)180.0Iteratee-based I/O (bsd3, data, deprecated, library, system)2010-10-27JohnLato
interval100.0Intervals with adherences. (data-structures, gpl, library)2016-08-21julm
uvector160.0Fast unboxed arrays with a flexible interface (bsd3, data, library)2010-02-15BryanOSullivan, DonaldStewart
pointedalternative80.0Alternative done right (bsd3, library)2016-08-25Gurkenglas
animate-sdl2550.0sdl2 + animate auxiliary library (bsd3, game, library)2018-05-20jxv
unique-logic-tf1140.0Solve simple simultaneous equations (bsd3, library, logic-programming)2019-01-22HenningThielemann
dunai1590.0Generalised reactive framework supporting classic, arrowized and monadic FRP. (bsd3, frp, library, reactivity)2018-11-04IvanPerez, keera_studios_ci, ChristinaZeller, keera_studios_ci_dunai
gloss-game230.0Gloss wrapper that simplifies writing games (bsd3, game, graphics, library)2014-08-03ManuelChakravarty
pipes-extra410.0Various basic utilities for Pipes. (bsd3, control, enumerator, library)2012-06-09PaoloCapriotti
type-functions160.0Emulation of type-level functions (bsd3, library, type-system)2016-07-21WolfgangJeltsch
hs-pkg-config410.0Create pkg-config configuration files (bsd3, data, development, library)2014-12-24PeterTrsko
dumb-cas820.0A computer “algebra” system that knows nothing about algebra, at the core. (gpl, library, math)2019-02-12leftaroundabout
gemstone220.0A simple library of helpers for SDL+GL games. (game, library)2013-02-09CorbinSimpson
probable1012.0Easy and reasonably efficient probabilistic programming and random generation (bsd3, library, math, statistics)2018-02-11AlpMestanogullari
aivika7262.0A multi-method simulation library (bsd3, library, simulation)2018-12-21DavidSorokin
graphs740.0A simple monadic graph library (algorithms, bsd3, data-structures, graphs, library)2018-02-24EdwardKmett, ryanglscott
libssh2390.0FFI bindings to libssh2 SSH2 client library (http://libssh2.org/) (bsd3, library, network)2018-11-22IlyaPortnov
urldisp-happstack80.0Simple, declarative, expressive URL routing -- on happstack. (bsd3, language, library)2009-07-25SterlingClover
simple-cmd-args00.0Simple command args parsing and execution (bsd3, library, system)2019-02-20JensPetersen
sessiontypes-distributed280.0Session types distributed (control, gpl, library)2018-01-13ferdinandvw
levmar2190.0An implementation of the Levenberg-Marquardt algorithm (bsd3, library, math, numerical)2018-05-07BasVanDijk, RoelVanDijk
iterIO160.0Iteratee-based IO with pipe operators (bsd3, data, enumerator, library, system)2012-04-19AmitLevy, DavidMazieres, DanielBGiffin
elerea882.0A minimalistic FRP library (bsd3, frp, library, reactivity)2016-06-19GergelyPatai
count140.0Bijective mappings between values and possibly infinite prefixes of [0..] (bsd3, data, library)2014-06-10Maxdamantus
ghci-pretty240.0colored pretty-printing within ghci (development, library, mit)2014-11-13larsk
pretty-compact530.0Pretty-printing library (library, text)2017-08-19JeanPhilippeBernardy
archiver730.0Archive supplied URLs in WebCite & Internet Archive (bsd3, documentation, library, network, program)2014-01-03GwernBranwen
stable-memo1080.0Memoization based on argument identity (data, library, mit)2015-07-12JakeMcArthur
pathtype2080.0Type-safe replacement for System.FilePath etc (bsd3, library, system)2018-02-17BenMoseley, HenningThielemann
fused-effects-lens150.0Monadic lens combinators for fused-effects. (bsd3, library, web)2019-01-09patrick_thomson
verifiable-expressions280.0An intermediate language for Hoare logic style verification. (apache, language, library)2018-05-18madgen
text-manipulate370.0Case conversion, word boundary manipulation, and textual subjugation. (data, library, text)2015-04-17BrendanHay
eventloop2840.0A different take on an IO system. Based on Amanda's IO loop, this eventloop takes a function that maps input events to output events. It can easily be extended by modules that represent IO devices or join multiple modules together. (bsd3, eventloop, library)2018-05-03sebaslafleur, LeonSchoorl
compdata4260.0Compositional Data Types (bsd3, generics, library)2018-09-24PatrickBahr
obdd1500.0Ordered Reduced Binary Decision Diagrams (library, logic)2018-05-20JohannesWaldmann
sneathlane-haste120.0A compositional web UI library, which draws to a Canvas element (bsd2, gui, library)2015-11-13JasonPriestley
reactive-banana-bunch100.0Extend reactive-banana to multiple events per time point (bsd3, frp, library)2018-09-01HenningThielemann
yesod-test-json90.0Utility functions for testing JSON web services written in Yesod (bsd3, library, web)2012-08-17SamAnklesaria
testpack (deprecated)1360.0Test Utililty Pack for HUnit and QuickCheck (unmaintained) (deprecated, library, testing)2014-10-27JohnGoerzen, PeterSimons
hexpat-pickle260.0XML picklers based on hexpat, source-code-similar to those of the HXT package (bsd3, library, xml)2012-04-27StephenBlackheath
terrahs190.0A Haskell GIS Programming Environment (gis-programs, library)2013-07-07SergioCosta
keera-hails-reactive-wx90.0Haskell on Rails - Reactive Fields for WX widgets (bsd3, development, library)2015-06-03IvanPerez, keera_studios_ci
hsnoise150.0A coherent 3d noise library. (bsd3, library, noise)2011-05-05ColinHill
reflex-animation170.0Continuous animations support for reflex (bsd3, frp, library)2015-10-20saulzar
yampa-gloss230.0A GLOSS backend for Yampa (graphics, library, mit)2018-10-29IvanPerez
chunks220.0Simple template library with static safety (library, text)2007-04-18MatthewSackman
first-class-patterns1192.0First class patterns and pattern matching, using type families (bsd3, data, library, pattern)2018-06-10BrentYorgey, ReinerPope, shersh, vrom911
GuiHaskell220.0A graphical REPL and development environment for Haskell (bsd3, development, program)2008-03-06NeilMitchell
data-filter240.0Utilities for filtering (bsd2, data, library)2018-05-17boonami
gtk2hs-rpn210.0Adds a module to gtk2hs allowing layouts to be defined using reverse polish notation. (gui, library)2011-09-23MauricioAntunes
exists130.0Existential datatypes holding evidence of constraints (bsd3, constraints, library)2012-05-15GaborLehel
category-printf280.0Highbrow approach to type-safe printf format specifications. (bsd3, library, text)2016-05-08CaleGibbard
memo-ptr100.0Pointer equality memoization (control, library, mit)2015-05-31edofic
nerf390.0Nerf, the named entity recognition tool based on linear-chain CRFs (bsd3, library, natural-language-processing, program)2014-12-08JakubWaszczuk
gencheck110.0A testing framework inspired by QuickCheck and SmallCheck (bsd3, library, testing)2012-06-19JacquesCarette
tower180.0A numeric tower (bsd3, library, mathematics)2017-02-21tonyday567
yuiGrid100.0Grids defined by layout hints and implemented on top of Yahoo grids. (library, web)2009-05-15SergioUrinovsky
hashflare200.0A library for working with HashFlare.io contracts and hashrates (bsd2, data, library)2017-01-20nbrk
stt100.0A monad transformer version of the ST monad (control, library, mit)2016-11-06mckeankylej
streamly1732.25Beautiful Streaming, Concurrent and Reactive Composition (bsd3, concurrency, control, library, reactivity, streaming)2018-12-31harendra
keera-hails-reactivevalues1221.5Haskell on Rails - Reactive Values (bsd3, development, library)2017-05-01IvanPerez, keera_studios_ci
twidge1610.0Unix Command-Line Twitter and Identica Client (network, program)2014-06-21JohnGoerzen
type-eq350.0Type equality evidence you can carry around (bsd3, library, type-system)2015-02-10AdamBergmark, GaborLehel
transf390.0Text transformer and interpreter. (bsd3, compilers-interpreters, library, program, text)2014-08-19HansHoglund
proplang90.0A library for functional GUI development (bsd3, library, user-interfaces)2007-08-15NeilMitchell
graph-generators692.0Functions for generating structured or random FGL graphs (algorithms, apache, graphs, library, program)2018-06-08ulikoehler
PrimitiveArray-Pretty470.0Pretty-printing for primitive arrays (bsd3, data, library)2017-03-03ChristianHoener
references1760.0Selectors for reading and updating data. (bsd3, control, library)2017-11-28lazac
master-plan550.0The project management tool for hackers (library, mit, program, tools)2017-08-18rodrigosetti
lio592.0Labeled IO Information Flow Control Library (library, security)2016-07-05AmitLevy, DavidMazieres, DeianStefan
yet-another-logger1220.0Yet Another Logger (apache, library, logging, program, system)2018-10-05larsk
minilens272.0A minimalistic lens library, providing only the simplest, most basic lens functionality. (data, gpl, lens, library)2016-05-31RaminHonary
wahsp90.0A haskell binding of the Web Audio API ala blank-canvas (bsd3, library, web)2016-09-18nshaheed
trivial-constraint160.0Constraints that any type, resp. no type fulfills (constraints, gpl, library)2016-01-23leftaroundabout
encode-string210.0Safe string conversion and encoding (data, library, mit, string, text)2017-03-15minad
pipes-core (deprecated in favor of pipes)340.0Compositional pipelines (bsd3, control, deprecated, enumerator, library)2012-04-09PaoloCapriotti
mtlx210.0Monad transformer library with type indexes, providing 'free' copies. (bsd3, control, library)2012-10-15MarkSnyder
bindings-levmar2220.0Low level bindings to the C levmar (Levenberg-Marquardt) library (ffi, library, numerical)2018-05-07BasVanDijk, RoelVanDijk
zoom-cache330.0A streamable, seekable, zoomable cache file format (bsd3, development, library, program)2012-12-07ConradParker
Tainted280.0Tainted type, and associated operations (bsd3, control, data, library, monads, trans)2015-05-27RossMeikleham
acme-zalgo652.25A somewhat flexible Zalgo̐ te̳͜x̥̖̉̓͞t̍̌̔ ̀̃t̴̢̞̜͓̝r̶̬̆̂̒͟á̧̡͎͔̯̰̕n̹̾̓ͬͦ̍͘ṡ̢͓͉ͮ͆l̠̖̹̗̳̖̽̌ͤ͞a͚̭͙̹̲ͭͩt͈͐o̢̭͇͍̟͐ͬ̾ͪ͜r͇.̸̅ͭ̐̀̊ͨ͛ (acme, library, mit)2018-02-25AntonEkblad
dzen-utils140.0Utilities for creating inputs for dzen. (library, system)2012-05-31FelipeLessa, javran, ianclement
workflow-extra280.0Utilities (e.g. Googling the clipboard contents) for the `workflow` pacakge (bsd3, library, program, todo)2017-05-04sboo
dynamic-object240.0Object-oriented programming with duck typing and singleton classes. (bsd3, data, library)2013-01-15TakayukiMuranushi
harpy270.0Runtime code generation for x86 machine code (bsd3, code-generation, library)2015-05-26DirkKleeblatt, MartinGrabmueller
Yampa-core140.0Library for programming hybrid systems. (bsd3, frp, library, reactivity)2015-06-25NikolayOrlyuk
monad-task140.0A monad transformer that turns event processing into co-routine programming. (bsd3, control, library)2018-01-04PaulLiu
PortFusion740.0high-performance distributed reverse / forward proxy & tunneling for TCP (gpl, network, program, system)2012-08-19CetinSert
adaptive-tuple300.0Self-optimizing tuple types (bsd3, data, library)2010-03-16JohnLato
wumpus-core380.0Pure Haskell PostScript and SVG generation. (bsd3, graphics, library)2012-05-01StephenTetley
arith-encode280.0A practical arithmetic encoding (aka Godel numbering) library. (bsd3, data, library, serialization, test, testing)2014-10-14emc2
error-message150.0Composable error messages. (bsd3, development, error-handling, library)2010-11-15GregoryCrosswhite
rados-haskell142.0librados haskell bindings (bsd3, library, system)2014-08-22ChristianMarie
dynamic-pp140.0A pretty-print library that employs a dynamic programming algorithm for optimal rendering. (bsd3, library, text)2015-07-19emc2
Nutri140.0A little library to calculate nutrition values of food items. (library, public-domain, utils)2013-11-27frosch03
loops200.0Fast imperative-style loops (bsd3, control, library)2014-06-13ThomasTuegel
argon2870.0Memory-hard password hash and proof-of-work function (bsd3, cryptography, library)2018-04-07HerbertValerioRiedel, JoeyHess, OliverCharles
wumpus-basic320.0Basic objects and system code built on Wumpus-Core. (bsd3, graphics, library)2012-05-01StephenTetley
nvim-hs-ghcid430.0Neovim plugin that runs ghcid to update the quickfix list (apache, editor, library)2018-03-25saep
bff430.0Bidirectionalization for Free! (POPL'09) (data, library, public-domain)2011-03-22DanielSeidel, JanisVoigtlaender, JoachimBreitner
web-page110.0Monoidally construct web pages (bsd3, library, web)2014-09-28ErtugrulSoeylemez, esz
template-hsml130.0Haskell's Simple Markup Language (bsd3, library, template, templating, web)2012-08-30PetrPilar
Prelude490.0A Prelude module replacement (bsd3, library, prelude)2018-08-29HerbertValerioRiedel
binary-derive210.0Automatic deriving of Binary using GHC.Generics (data, gpl, library)2011-11-05JaredHance
Paraiso880.0a code generator for partial differential equations solvers. (bsd3, language, library)2015-12-03TakayukiMuranushi
dunai-core310.0Generalised reactive framework supporting classic, arrowized and monadic FRP. (Core library fork.) (bsd3, frp, library, reactivity)2018-10-21turion
mapalgebra550.0Efficient, polymorphic Map Algebra. (bsd3, geography, library)2019-01-01fosskers
kinds220.0Emulation of subkinds and subkind polymorphism (bsd3, library, type-system)2012-01-15WolfgangJeltsch
curl-aeson230.0Communicate with HTTP service using JSON (bsd3, json, library, network, web)2014-08-24JoelLehtonen
TeX-my-math250.0Render general Haskell math to LaTeX. Or: math typesetting with high signal-to-noise–ratio. (gpl, library, math)2017-11-02leftaroundabout
broadcast-chan780.0Closable, fair, single-wakeup channel type that avoids 0 reader space leaks. (bsd3, library, system)2018-09-24MerijnVerstraaten
typedflow100.0Typed frontend to TensorFlow and higher-order deep learning (deep-learning, lgpl, library)2017-10-26JeanPhilippeBernardy
narc150.0Query SQL databases using Nested Relational Calculus embedded in Haskell. (bsd3, database, library)2011-08-09EzraCooper
rpm80.0Cozy little project to question unruly rpm packages. (bsd3, library, system)2010-11-01EricStolten
seclib190.0A simple library for static information-flow security in Haskell (bsd3, library, security)2014-12-15AlejandroRusso
function-instances-algebra130.0Instances of the Algebra.* classes for functions (bsd3, library, math)2012-03-25TobiasBrandt
AERN-Net (deprecated in favor of aern2-mp, aern2-real)440.0Compositional lazy dataflow networks for exact real number computation (bsd3, deprecated, distributed-computing, library, math)2009-07-29MichalKonecny
HPlot290.0A minimal monadic PLplot interface for Haskell (bsd3, foreign, graphics, library, program)2009-08-04YakovZaytsev
tasty-integrate80.0automated integration of QuickCheck properties into tasty suites (bsd3, program, testing)2014-02-02jfeltz
open-pandoc (deprecated in favor of pandoc)130.0Conversion between markup formats (deprecated, text)2010-04-14PeterSimons
dpor (deprecated in favor of dejafu)280.0A generic implementation of dynamic partial-order reduction (DPOR) for testing arbitrary models of concurrency. (deprecated, library, mit, testing)2016-06-06barrucadu
type-digits140.0Arbitrary-base type-level digits (bsd3, library, type-system)2013-07-31NicolasFrisby
aivika-gpss820.0GPSS-like DSL for Aivika (bsd3, library, simulation)2018-03-17DavidSorokin
semi-iso270.0Weakened partial isomorphisms, reversible computations. (control, data, library, mit)2014-12-12pawel834
app-lens280.0applicative (functional) bidirectional programming beyond composition chains (bsd3, data, lenses, library)2016-09-25kztk
yall120.0Lenses with a southern twang (bsd3, data, library)2012-09-21BrandonSimmons
SNet130.0Declarative coördination language for streaming networks. (language, lgpl, library)2012-09-24MerijnVerstraaten
network-uri-flag170.0Pseudo-package encapsulating flag(network-uri) Cabal boilerplate (bsd3, library, network)2016-08-27HerbertValerioRiedel
fpnla140.0A library for NLA operations (bsd3, library, math)2014-02-04mblanco
MC-Fold-DP270.0Folding algorithm based on nucleotide cyclic motifs. (bioinformatics, gpl, library, program)2012-11-12ChristianHoener
primitive-simd112.0SIMD data types and functions (bsd3, data, library)2016-02-01JonasScholl
unique-logic410.0Solve simple simultaneous equations (bsd3, library, logic-programming)2018-02-17HenningThielemann
tree-traversals140.0Functions and newtype wrappers for traversing Trees (data, library)2018-03-28NoahEasterly
perdure190.0Robust persistence for acyclic immutable data (database, library, program)2012-09-26PatrickPremont
data-dispersal490.0Space-efficient and privacy-preserving data dispersal algorithms. (cryptography, data, lgpl, library)2014-10-05PeterRobinson
equeue160.0Application level triggered, and edge triggered event multiqueues. (bsd3, concurrency, library)2019-01-01KevinCotrone, davean

Alternatively, if you are looking for a particular function then try Hayoo or Hoogle