Package search

Name
DLs
Rating
Description
Tags
Last U/L
Maintainer
JSON-Combinator (deprecated in favor of lens)4000.0A combinator library on top of a generalised JSON type (bsd3, combinators, deprecated, json, library)2011-04-03TonyMorris
data-combinator-gen1160.0Generate a special combinator from any data type. (data, library, mit)2019-05-26bolt12
combinator-interactive1150.0SKI Combinator interpreter (bsd3, language, library, program)2013-09-07FumiakiKinoshita
guess-combinator420.0Generate simple combinators given their type (bsd3, development, library)2012-05-16EtienneLaurin
JSON-Combinator-Examples (deprecated in favor of lens)470.0Example uses of the JSON-Combinator library. (bsd3, combinators, deprecated, library)2010-12-20TonyMorris
parser-combinators8360.0Lightweight package providing commonly useful parser combinators (bsd3, library, parsing)2019-11-08HerbertValerioRiedel, mrkkrp
megaparsec16822.75Monadic parser combinators (bsd2, library, parsing)2019-11-07HerbertValerioRiedel, TikhonJelvis, mrkkrp
parsec14282.75Monadic parser combinators (bsd3, library, parsing)2019-08-10AntoineLatter, HerbertValerioRiedel
trifecta30272.25A modern parser combinator library with convenient diagnostics (bsd3, diagnostics, library, logging, parsing, pretty-printer, text)2019-09-07EdwardKmett, EricMertens, quchen, ryanglscott
fast-combinatorics2942.0Fast combinatorics. (bsd3, library, numerics)2018-01-02
polyparse12300.0A variety of alternative parser combinator libraries. (library, parsing, text)2019-08-22MalcolmWallace, phadej
exact-combinatorics1820.0Efficient exact computation of combinatoric functions. (bsd3, library, math, statistics)2019-04-13WrenThornton, WrenRomano
HaskellForMaths9940.0Combinatorics, group theory, commutative algebra, non-commutative algebra (bsd3, library, math)2018-12-15DavidAmos
uu-parsinglib14200.0Fast, online, error-correcting, monadic, applicative, merging, permuting, interleaving, idiomatic parser combinators. (library, mit, parsercombinators, parsing, text)2016-04-12DoaitseSwierstra
gll5080.0GLL parser with simple combinator interface (bsd3, compilers, library)2018-09-01ltvanbinsbergen
parsec34740.0Monadic parser combinators (bsd3, library, parsing)2015-02-16ChristianMaeder
grammatical-parsers4310.0parsers that combine into grammars (bsd3, library, parsing, program, text)2019-10-20MarioBlazevic
substring-parser1320.0Match / replace substrings with a parser combinators. (apache, library, parsing, text)2018-07-22igrep
attoparsec27652.75Fast combinator parsing for bytestrings and text (bsd3, library, parsing, text)2019-08-31BasVanDijk, BenGamari, BryanOSullivan
parser-combinators-tests1280.0Test suite of parser-combinators (bsd3, parsing)2019-11-08mrkkrp
parsec12480.0Portable monadic parser combinators (bsd3, library, parsing)2015-02-16ChristianMaeder
parsix2200.0Parser combinators with slicing, error recovery, and syntax highlighting (bsd3, library, parsing)2019-04-16OlleFredriksson
IndentParser (deprecated)950.0Combinators for parsing indentation based syntatic structures (deprecated, library, parsing)2007-10-19PiyushKurur
yoda1340.0Parser combinators for young padawans (bsd3, library, text)2018-11-05NicolasWu
inchworm1770.0Simple parser combinators for lexical analysis. (library, mit, parsing)2019-01-02BenLippmeier
incremental-parser8100.0Generic parser library capable of providing partial results from partial input. (gpl, library, parsing)2020-01-21MarioBlazevic
definitive-parser810.0A parser combinator library for the Definitive framework (library, parsers)2014-11-11MarcCoiffier
parcom-lib2950.0A simple parser-combinator library, a bit like Parsec but without the frills (bsd3, library, text)2015-07-08TobiasDammers
indents2790.0indentation sensitive parser-combinators for parsec (bsd3, library, parsing, text)2019-10-02JasperVanDerJeugt, SamAnklesaria
parsers12522.25Parsing combinators (bsd3, library, parsing, text)2019-05-02EdwardKmett, EricMertens, ryanglscott
uu-tc710.0Haskell 98 parser combinators for INFOB3TC at Utrecht University (bsd3, library, parsing, text)2015-11-11TrevorMcDonell, joaopizani
combinatorics (deprecated in favor of exact-combinatorics)350.0Efficient computation of common combinatoric functions. (bsd3, deprecated, library, math, statistics)2012-01-29WrenThornton
paripari2360.0Parser combinators with fast-path and slower fallback for error reporting (library, mit, program, text)2019-10-15minad
fastparser2462.0A fast, but bare bones, bytestring parser combinators library. (bsd3, library, parsing)2019-10-29SimonMarechal
parsec2540.0Monadic parser combinators (bsd3, library, parsing)2015-11-17AntoineLatter
parsimony (deprecated)810.0Monadic parser combinators derived from Parsec (bsd3, deprecated, library, parsing)2012-02-06IavorDiatchki
permute (deprecated in favor of parser-combinators)400.0Generalised permutation parser combinator (bsd3, deprecated, library, parsing)2011-09-22TroelsHenriksen
parco (deprecated in favor of parser-combinators)540.0Generalised parser combinators (bsd3, deprecated, library, parsing)2013-11-27TroelsHenriksen
ebnf-bff460.0Parser combinators & EBNF, BFFs! (ebnf, library, metalanguage, mit, parsing, program, text)2015-09-20Lokidottir
ponder440.0PEG parser combinator (library, mit, parsing)2014-03-06matt
cassette400.0A combinator library for simultaneously defining parsers and pretty printers. (bsd3, library, parsing, text)2012-03-19MathieuBoespflug
PArrows580.0Arrow parser combinators similar to Parsec (bsd3, library, parsing)2009-01-24GwernBranwen
applicative-parsec420.0An applicative parser combinator library (gpl, language, library)2015-04-09KarlVoelker
xml-enumerator-combinators600.0Parser combinators for xml-enumerator and compatible XML parsers. (bsd3, enumerator, library, xml)2011-04-06AristidBreitkreuz
fungll-combinators400.0GLL parser with simple combinator interface (bsd3, compilers, library)2019-03-29ltvanbinsbergen
parsec-pratt400.0Pratt Parser combinator for Parsec (library, mit, program, text)2016-08-02jh3141
scanner1950.0Fast non-backtracking incremental combinator parsing for bytestrings (bsd3, library, parsing)2019-09-18YurasShumovich
fast-arithmetic18992.0Fast functions on integers. (algorithms, ats, bsd3, combinatorics, ffi, library, math, number-theory, numerics)2019-10-12vmchale
uulib6952.0Haskell Utrecht Tools Library (bsd3, library, parsing)2019-02-14ArieMiddelkoop, AtzeDijkstra, DoaitseSwierstra, JeroenBransen, PhilippHausmann
parco-parsec (deprecated in favor of parser-combinators)540.0Generalised parser combinators - Parsec interface (bsd3, deprecated, library, parsing)2013-11-27TroelsHenriksen
parco-attoparsec (deprecated in favor of parser-combinators)400.0Generalised parser combinators - Attoparsec interface (bsd3, deprecated, library, parsing)2013-11-27TroelsHenriksen
picoparsec2682.0Fast combinator parsing for bytestrings and text (bsd3, library, parsing, text)2015-08-13MarioBlazevic
uu-interleaved1470.0An interleaving combinator for use with applicative style implementations. (applicative, control, library, mit, parsing, text)2018-08-06DoaitseSwierstra
quack610.0Convenience parser combinators for URI query strings (bsd3, library, web)2016-08-30athanclark
blaze-html29252.25A blazingly fast HTML combinator library for Haskell (bsd3, library, text)2019-10-02JasperVanDerJeugt, SimonMeier
tagsoup-megaparsec572.0A Tag token parser and Tag specific parsing combinators (bsd3, library, xml)2016-08-03kseo
bytestringparser-temporary1060.0Combinator parsing with Data.ByteString.Lazy (bsd3, library, parsing, text)2009-09-15JasonDusek
split12902.25Combinator library for splitting lists. (bsd3, library, list)2020-02-22BrentYorgey
tagsoup-parsec2360.0Tokenizes Tag, so [ Tag ] can be used as parser input. (bsd3, library, xml)2011-11-29JohnnyMorrice, OzgunAtaman
servant16703.0A family of combinators for defining webservices APIs (bsd3, library, servant, web)2020-01-23AlpMestanogullari, SoenkeHahn, ChristianMarie, phadej, jkarni
either15452.0Combinators for working with sums (bsd3, control, library, monads)2019-05-02EdwardKmett, ryanglscott, GeorgeWilson
language-pig1700.0Pig parser in haskell. (language, library, mit)2013-12-16elisehuard
blaze-markup12650.0A blazingly fast markup combinator library for Haskell (bsd3, library, text)2019-10-02DeepakJois, JasperVanDerJeugt
servant-server15412.75A family of combinators for defining webservices APIs and serving them (bsd3, library, program, servant, web)2020-01-23AlpMestanogullari, SoenkeHahn, ChristianMarie, phadej, jkarni
phaser2000.0Incremental multiple pass parser library. (bsd3, library, text)2018-11-20quick_dudley
hspec-expectations8900.0Catchy combinators for HUnit (library, mit, testing)2016-10-16SimonHengel, SoenkeHahn
optparse-applicative20703.0Utilities and combinators for parsing command line options (bsd3, cli, library, options, parsing, system)2019-09-12PaoloCapriotti, huw
describe8740.0Combinators for describing binary data structures (bsd3, data, library)2020-02-08riuga
config-parser2830.0Parse config files using parsec and generate parse errors on unhandled keys (library, mit, text)2018-01-21BenHamlin
composition-prelude18802.0Higher-order function combinators (bsd3, control, data, library)2019-04-13vmchale
ParsecTools480.0Parsec combinators for more complex objects. (gpl, library, parsing)2010-09-22ChristianHoener
retry12022.5Retry combinators for monadic actions that may fail (bsd3, control, library)2019-10-11MichaelXavier, OzgunAtaman
bytestringreadp730.0A ReadP style parser library for ByteString (bsd3, library, text)2007-12-13GracjanPolak
parsec-parsers (deprecated in favor of parsers)1400.0Parsing instances for Parsec (bsd3, deprecated, library, parsing, text)2013-11-05DagOdenhall, EdwardKmett
servant-auth4690.0Authentication combinators for servant (authentication, bsd3, library, servant, web)2018-06-18AlpMestanogullari, phadej, jkarni, mchaver, domenkozar
frisby1940.0Linear time composable parser for PEG grammars (bsd3, library, text)2020-02-17BenGamari, ChrisDone
xhtml4510.0An XHTML combinator library (bsd3, library, pretty-printer, web, xml)2018-03-09BenGamari, BjornBringert, ChrisDornan, HerbertValerioRiedel, IanLynagh
XSaiga3282.0An 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
digit6952.0A data-type representing digits 0-9 and other combinations (bsd3, data, library)2019-11-20TonyMorris, qfpl
blaze-svg4662.0SVG combinator library (bsd3, graphics, library)2017-03-13BrentYorgey, DeepakJois
data-memocombinators3102.0Combinators for building memo tables. (bsd3, data, library)2013-12-14DmitryMalikov, LukePalmer, ThomasDuBuisson
combinatorial1730.0Count, enumerate, rank and unrank combinatorial objects (bsd3, library, math, statistics)2018-08-31HenningThielemann
parsec-tagsoup320.0Parsec parsers for Tagsoup tag streams (library, public-domain, xml)2011-12-30PepeIborra
linear31782.5Linear Algebra (algebra, bsd3, library, math)2020-02-03AnthonyCowley, EdwardKmett, EricMertens, ryanglscott
sax400.0Monadic streaming XML parser (bsd3, library, sax, text)2018-04-13dredozubov
kure7430.0Combinators for Strategic Programming (bsd3, language, library)2015-09-15AndyGill, NeilSculthorpe
string-combinators3010.0Polymorphic functions to build and combine stringlike values (bsd3, data, library)2014-06-13BasVanDijk
formatting9602.0Combinator-based type-safe formatting (like printf() or FORMAT) (bsd3, library, text)2019-01-02ChrisDone
argparser1080.0Command line parsing framework for console applications (bsd3, console, library)2014-11-27sbergot
data-hash2790.0Combinators for building fast hashing functions. (bsd3, data, library)2015-05-20DanielGorin
parallel-io4380.0Combinators for executing IO actions in parallel on a thread pool. (bsd3, concurrency, library)2012-12-24MaxBolingbroke
servant-snap5122.0A family of combinators for defining webservices APIs and serving them (bsd3, library, program, web)2019-05-30imalsogreg
servant-github-webhook4060.0Servant combinators to facilitate writing GitHub webhooks. (library, mit, web)2019-08-21tsani
decidable4030.0Combinators for manipulating dependently-typed predicates. (bsd3, dependent-types, library)2020-02-03jle
scc4290.0Streaming component combinators (combinators, concurrency, control, library, program)2016-06-19MarioBlazevic
html1870.0HTML combinator library (bsd3, library, web)2008-10-11DonaldStewart
JsonGrammar3560.0Combinators for bidirectional JSON parsing (bsd3, json, language, library)2016-10-07MartijnVanSteenbergen
ribbit4972.0Type-level Relational DB combinators. (database, library, mit)2020-02-06taphu
permutation2920.0A library for permutations and combinations. (bsd3, data-structures, library, math)2015-01-20PatrickPerry, spacekitteh
logging-effect-extra-handler2060.0Handy logging handler combinators (library, mit, other, program)2018-08-06jship
functor-combo4940.0Functor combinators with tries & zippers (bsd3, data, library)2015-05-04ConalElliott
monad-par-extras2540.0Combinators and extra features for Par monads (bsd3, control, library, monads, parallelism)2013-07-12RyanNewton
composition3300.0Combinators for unorthodox function composition (bsd3, data, library)2015-12-31DanBurton
orgmode-parse5360.0A collection of Attoparsec combinators for parsing org-mode flavored documents. (bsd3, data, library)2018-10-31ParnellSpringmeyer
lens-simple2990.0simplified import of elementary lens-family combinators (bsd3, lenses, library)2016-06-23MichaelThompson
haskelldb3220.0A library of combinators for generating and executing SQL statements. (bsd3, database, library)2014-09-29BjornBringert, JustinBailey
FPretty1130.0Efficient simple pretty printing combinators (bsd3, library, text.prettyprint)2015-11-16OlafChitil
composition-extra1460.0Combinators for unorthodox structure composition (bsd3, data, library)2015-09-17athanclark
functor-combinators1890.0Tools for functor combinator-based program design (bsd3, data, library)2019-11-19jle
cv-combinators2640.0Functional Combinators for Computer Vision (ai, gpl, graphics, library, program)2015-08-12NoamLewis
grammar-combinators2840.0A parsing library of context-free grammar combinators. (library, parsing)2013-01-02DominiqueDevriese
from-sum3212.0Combinators for working with Maybe and Either (bsd3, control, library)2020-01-25cdepillabout
xilinx-lava6140.0The Lava system for Xilinx FPGA design with layout combinators. (bsd3, hardware, library, program)2014-08-21SatnamSingh
lens84773.0Lenses, Folds and Traversals (bsd2, data, generics, lenses, library)2020-02-13EdwardKmett, EricMertens, JohnWiegley, ryanglscott
fused-effects-lens1612.0Monadic lens combinators for fused-effects. (bsd3, control, library, web)2020-01-04patrick_thomson, robrix
pointless-fun1350.0Some common point-free combinators. (bsd3, combinators, composition, library, utils)2015-05-30WrenThornton
graph-rewriting-ski4980.0Two evalutors of the SKI combinator calculus as interactive graph rewrite systems (application, bsd3, compilers-interpreters, program)2017-05-23JanRochel
tasty21802.5Modern and extensible testing framework (library, mit, testing)2019-06-09EdwardKmett, OliverCharles, RomanCheplyaka, bergey
between1470.0Function combinator "between" and derived combinators (bsd3, data, library)2016-01-09PeterTrsko
show-combinators1470.0Combinators to write Show instances (library, mit, text)2019-01-11lyxia
simple-cmd-args2800.0Simple command args parsing and execution (bsd3, library, system)2020-02-06JensPetersen
validate-input1150.0Input validation combinator library (library, mit, web)2015-11-04AlexanderThiemann
extensible15220.0Extensible, efficient, optics-friendly data types and effects (bsd3, data, library, monads, records)2020-02-09FumiakiKinoshita
hashable17761.75A class for types that can be converted to a hash value (bsd3, data, library)2019-05-10BryanOSullivan, HerbertValerioRiedel, JohanTibell, MilanStraka
ad37712.5Automatic Differentiation (bsd3, library, math)2020-02-03EdwardKmett, EricMertens, ryanglscott
couchdb-conduit10200.0Couch DB client library using http-conduit and aeson (bsd3, conduit, database, library)2012-11-02AlexanderDorofeev
servant-ede1600.0Combinators for rendering EDE templates in servant web applications (bsd3, library, program, web)2016-09-16AlpMestanogullari
conduit-audio2160.0Combinators to efficiently slice and dice audio streams (bsd3, library, sound)2017-09-02mtolly
data-aviary2100.0Combinator birds. (bsd3, combinators, library)2013-04-24StephenTetley
indentation3710.0Indentation sensitive parsing combinators for Parsec and Trifecta (bsd3, library, parsing)2018-10-06MichaelAdams, OmerAgacan, AlekseyKliger
amazonka-iam-policy1270.0Amazon IAM Policy Document DSL and Combinators. (aws, cloud, library, mpl, network)2018-08-14BrendanHay
plumbers1570.0Pointless plumbing combinators (acme, bsd3, library)2018-01-11MichaelSloan
luthor990.0Tools for lexing and utilizing lexemes that integrate with Parsec. (bsd3, language, library, text)2015-11-25ZankokuOkuno
servant-matrix-param1660.0Matrix parameter combinator for servant (library, mit, web)2016-11-03SoenkeHahn, jkarni
foldl13292.5Composable, streaming, and efficient left folds (bsd3, control, library)2020-01-10GabrielGonzalez
QuickCheck28422.75Automatic testing of Haskell programs (bsd3, library, testing)2019-06-30DonaldStewart, KoenClaessen, NickSmallbone, SimonMarlow
hspec-expectations-pretty-diff1360.0Catchy combinators for HUnit (library, mit, testing)2019-10-16myfreeweb
servant-streaming810.0Servant combinators for the 'streaming' package (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
binary-parsers2200.0Extends binary with parsec/attoparsec style parsing combinators. (bsd3, data, library)2019-06-26winterland
NumberTheory730.0A library for number theoretic computations, written in Haskell. (gpl, library, math)2016-02-17cfredric
sexp-grammar2730.0Invertible grammar combinators for S-expressions (bsd3, language, library)2019-08-04EugeneSmolanka, SergeyVinokurov
async-combinators (deprecated)530.0Async combinators (concurrency, deprecated, library, mpl)2018-07-23serokell
pappy770.0Packrat parsing; linear-time parsers for grammars in TDPL. (bsd3, program, text)2012-10-21ChrisDone
control-bool1050.0Useful combinators for boolean expressions (bsd3, control, library)2013-12-08FumiakiKinoshita
SimpleH (deprecated in favor of definitive-base)1530.0A light, clean and powerful Haskell utility library (deprecated, library, prelude)2013-11-28MarcCoiffier
fadno-xml2530.0XML/XSD combinators/schemas/codegen (bsd2, library, music, xml)2020-01-19spopejoy
base11032.75Basic libraries (bsd3, library, prelude)2018-09-23AustinSeipp, HerbertValerioRiedel, IanLynagh, PaoloCapriotti
servant-zeppelin1210.0Types and definitions of servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
sv2650.0Encode and decode separated values (CSV, PSV, ...) (bsd3, csv, library, text, web)2019-08-13qfpl, GeorgeWilson
mvc-updates1560.0Concurrent and combinable updates (bsd3, concurrency, control, library)2014-09-23GabrielGonzalez
array-memoize940.0Memoization combinators using arrays for finite sub-domains of functions (bsd3, library, syntax)2014-04-04DominicOrchard
tax620.0Types and combinators for taxes (agpl, finance, library)2018-08-23frasertweedale
versioning-servant480.0Servant combinators for the versioning library. (apache, data, library)2018-11-08lortabac
test-shouldbe (deprecated in favor of hspec-expectations)840.0Catchy combinators for HUnit (deprecated, library, mit, testing)2015-04-04
reproject790.0Define and combine "materialized" projections (bsd3, library, web)2017-06-16AlexanderThiemann
servant-zeppelin-client860.0Client library for servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
servant-zeppelin-server500.0Server library for servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
dph-lifted-vseg1590.0Data Parallel Haskell lifted array combinators. (bsd3, data-structures, library)2012-10-25BenLippmeier
type-errors-pretty1652.0Combinators for writing pretty type errors easily (library, mpl, type-errors, types)2019-10-15shersh
yaml-combinators1330.0YAML parsing combinators for improved validation and error reporting (library, mit, text)2019-11-08RomanCheplyaka
type-combinators-singletons710.0Interop between /type-combinators/ and /singletons/. (bsd3, data, library)2018-01-21jle
elm-hybrid1360.0Combine Elm with Haskell for data based applications (bsd3, library, web)2016-07-04matsrietdijk
servant-zeppelin-swagger1040.0Swagger instances for servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
bytestringparser1340.0Combinator parsing with Data.ByteString.Lazy (bsd3, library, parsing, text)2008-01-27BryanOSullivan
numhask-prelude3750.0A numeric prelude (bsd3, library, mathematics)2020-02-01tonyday567
async-extra920.0Useful concurrent combinators (library, mit, web)2017-05-28AlexanderThiemann
mcmc-samplers1092.0Combinators for MCMC sampling (bsd3, library, machine-learning, math, numeric, statistics)2014-11-10pravnar, z
shade2120.0A control structure used to combine heterogenous types with delayed effects. (bsd3, control, library)2017-05-20fredefox
selections1550.0Combinators for operating with selections over an underlying functor (bsd3, data-structures, functors, library)2017-08-12ChrisPenner
indentation-parsec620.0Indentation sensitive parsing combinators for Parsec (bsd3, library, parsing)2018-10-06AlekseyKliger
chalkboard1230.0Combinators for building and processing 2D images. (bsd3, graphics, library)2009-12-02AndyGill
indentation-core820.0Indentation sensitive parsing combinators core library (bsd3, library, parsing)2018-10-06AlekseyKliger
xhtml-combinators1390.0Fast and easy to use XHTML combinators. (bsd3, library, text, web)2011-06-07AlasdairArmstrong
quiver-bytestring860.0Quiver combinators for bytestring streaming (bsd3, control, library)2015-09-13patrykz
hath7442.0Hath manipulates network blocks in CIDR notation. (agpl, program, utils)2019-03-04MichaelOrlitzky
linkcore1350.0Combines multiple GHC Core modules into a single module (bsd3, language, program)2010-05-25TimChevalier
irc4280.0A small library for parsing IRC messages. (bsd3, data, library, network)2014-12-16TrevorElliott
treefold1070.0Provides folds which try to combine elements in a balanced way. (data, library, mit)2017-10-04oisdk
indentation-trifecta1390.0Indentation sensitive parsing combinators for Trifecta (bsd3, library, parsing)2018-10-06AlekseyKliger
xml-enumerator (deprecated in favor of xml-conduit)9160.0Pure-Haskell utilities for dealing with XML with the enumerator package. (deprecated) (bsd3, deprecated, enumerator, library, xml)2012-01-02MichaelSnoyman
invertible-grammar1060.0Invertible parsing combinators framework (bsd3, language, library)2019-02-08EugeneSmolanka
caseof660.0Combinators for casing on constructors (bsd3, development, library)2018-03-07ChrisDone
iteratee16780.0Iteratee-based I/O (bsd3, data, library, system)2014-05-19JohnLato
cflp6050.0Constraint Functional-Logic Programming in Haskell (bsd3, control, library)2009-06-04SebastianFischer
rose-trie1690.0Trees with polymorphic paths to nodes, combining properties of Rose Trees and Tries. (data, gpl, library)2017-03-27RaminHonary
vector-split990.0Combinator library for splitting vectors. (data, data-structures, library, mit)2017-01-31fho
function-combine800.0Combining functions (bsd3, control, library)2011-09-23IainAlexander
binary-ieee754740.0Backport ieee754 float double combinators to older binary (bsd3, data, library)2016-10-24winterland
symantic-http690.0Symantic combinators for deriving clients or a server from an HTTP API (gpl, library, protocol)2019-04-12julm
lambdacube-bullet (deprecated)680.0Example for combining LambdaCube and Bullet (bsd3, deprecated, graphics, library, physics)2011-06-23CsabaHruska
altcomposition1100.0Alternative combinators for unorthodox function composition (bsd3, data, library)2016-07-26jcristovao
functor-monadic1270.0Monad-style combinators for functors. (apache, data, library)2015-05-17jtapolczai, jtapolczai2
servant-namedargs1230.0Combinators for servant providing named parameters (bsd3, library, web)2019-03-22CullinPoresky
servant-auth-server8540.0servant-server/servant-auth compatibility (authentication, bsd3, library, servant, web)2020-02-06AlpMestanogullari, phadej, jkarni, mchaver, domenkozar
quiver-cell900.0Quiver combinators for cellular data processing (bsd3, control, library)2015-08-31patrykz
compstrat950.0Strategy combinators for compositional data types (bsd3, generics, language, library)2015-03-24JamesKoppel
pipes-fluid1150.0Reactively combines Producers so that a value is yielded as soon as possible. (bsd3, control, frp, library, pipes)2018-06-01louispan
capability712.0Extensional capabilities and deriving combinators (bsd3, control, library)2019-03-22aherrmann
Yampa9932.5Elegant Functional Reactive Programming Language for Hybrid Systems (bsd3, frp, library, reactivity)2019-10-15GeorgeGiorgidze, IvanPerez, keera_studios_ci
lens-process2892.0Optics for system processes (bsd3, library, system)2019-09-28topos
srcloc5460.0Data types for managing source code locations. (bsd3, data, library)2018-03-30GeoffreyMainland
kure-your-boilerplate840.0Generator for Boilerplate KURE Combinators (bsd3, language, library)2009-01-27AndyGill
text-lips760.0Monadic parsing combinator library with attention to locations (bsd3, library, parsing, text)2017-07-29MikhailVorozhtsov
aeson-filthy1450.0Several newtypes and combinators for dealing with less-than-cleanly JSON input. (bsd3, json, library, text, web)2019-12-08AlecHeller
antiquoter780.0Combinator library for quasi- and anti-quoting. (bsd3, library, template-haskell)2013-04-14LarsCorbijn
MonadCatchIO-transformers-foreign (deprecated)470.0Polymorphic combinators for working with foreign functions (bsd3, control, deprecated, library)2010-05-29AntoineLatter
f-algebra-gen820.0Generate a special f-algebra combinator from any data type. (data, library, mit)2019-07-19bolt12
dph-lifted-copy970.0Data Parallel Haskell lifted array combinators. (deprecated version) (bsd3, data-structures, library)2012-10-25BenLippmeier
valid1080.0Type isomorphic to `Either` with `Applicative` instance which combines errors (bsd3, library, unclassified)2019-08-22MatthewFarkasDyck
yst10610.0Builds a static website from templates and data in YAML or CSV files. (program, text)2019-11-26JohnMacFarlane
MonadCatchIO-mtl-foreign (deprecated)650.0Polymorphic combinators for working with foreign functions (bsd3, control, deprecated, library)2010-05-29AntoineLatter
type-combinators-quote730.0Quasiquoters for the 'type-combinators' package. (bsd3, data, library)2016-01-26KyleCarter
lucid9582.5Clear to write, read and edit DSL for HTML (bsd3, library, web)2019-11-03ChrisDone, phadej
couchdb-enumerator2380.0Couch DB client library using http-enumerator and aeson (bsd3, database, library, web)2012-03-13JohnLenz
sec320.0Semantic Editor Combinators. (bsd3, combinators, data, library)2010-03-30SteffenSiering
syntax1540.0Reversible parsing and pretty-printing. (data, library, mit)2014-12-12pawel834
HTTP29222.0A library for client-side HTTP (bsd3, library, network)2019-06-17BjornBringert, BryanOSullivan, DonaldStewart, DuncanCoutts, GaneshSittampalam, JohanTibell, SigbjornFinne
data-emoticons870.0Combinator emoticons: data-aviary in the flavor of emoticons (bsd3, combinators, library)2017-04-23lbq
quickcheck-property-comb990.0Combinators for Quickcheck Property construction and diagnostics (library, public-domain, testing)2013-12-26jfeltz
numbering730.0Combinators for creating bijections from some type to the natural numbers. (bsd3, data, library)2012-03-10DanielSchuessler
servant-auth-client5320.0servant-client/servant-auth compatibility (authentication, bsd3, library, servant, web)2019-03-08AlpMestanogullari, phadej, jkarni, mchaver, domenkozar
repa13832.0High performance, regular, shape polymorphic parallel arrays. (bsd3, data-structures, library)2018-10-03BasVanDijk, BenLippmeier, PepeIborra, TrevorMcDonell, vmchale
type-level-natural-number-induction620.0High-level combinators for performing inductive operations. (bsd3, data, library, type-system)2012-07-23GregoryCrosswhite
quiver-csv1160.0Quiver combinators for cellular CSV data processing (bsd3, control, library)2015-08-04patrykz
halves910.0Split or combine data structures to and from halves, quarters, eighths (bsd3, data, library)2018-10-15puffnfresh
time-patterns2540.0Patterns for recurring events (bsd3, data, library, time)2018-07-02jfmueller
Zwaluw460.0Combinators for bidirectional URL routing (bsd3, library, text)2010-11-07MartijnVanSteenbergen
checkers10982.0Check properties on standard classes and data structures. (bsd3, library, testing)2019-09-06ConalElliott
io-streams14462.5Simple, composable, and easy-to-use stream I/O (bsd3, data, io-streams, library, network)2019-01-28DougBeardsley, GregoryCollins
bidirectionalization-combined680.0Prototype Implementation of Combining Syntactic and Semantic Bidirectionalization (ICFP'10) (language, program, public-domain)2010-09-27JoachimBreitner
allocated-processor570.0Functional combinators for monadic actions that require allocation and de-allocation (bsd3, control, library)2010-05-23NoamLewis
parsec-numeric840.0Parsec combinators for parsing Haskell numeric types. (library, parsing)2017-01-07andrewrademacher
moe4710.0html with style (bsd3, library, web)2015-05-03JinjingWang
treersec600.0Structure Editing Combinators (bsd2, gui, library)2015-11-13JasonPriestley
parsec-utils440.0Utility functions and combinators for Text.Parsec (bsd3, library, parsing)2012-11-06RemcoNiemeijer
fclabels21942.25First class accessor labels implemented as lenses. (bsd3, data, lenses, library)2020-01-28AdamBergmark, ErikHesselink, SebastiaanVisser
graph-rewriting-cl (deprecated in favor of graph-rewriting-trs)410.0Interactive graph rewriting system implementing various well-known combinators (application, bsd3, deprecated, graphs, program)2011-02-07JanRochel
wai-request-spec4230.0Declarative request parsing (bsd3, library, network, wai)2016-12-30alleledev
threepenny-editors8710.0Composable algebraic editors (bsd3, library, web)2018-10-07PepeIborra
glue-core3142.0Make better services and clients. (bsd3, library, network)2019-03-17seanparsons
strictly260.0Combinators for strictifying functions (bsd3, control, library)2013-08-14DanBurton
lens-prelude720.0Alternate prelude that exports lens combinators (bsd3, library, web)2015-10-27andrewthad
monad-lgbt630.0Monad transformers for combining local and global state. (bsd2, control, library)2016-07-23MichalGajda
Annotations1810.0Constructing, analyzing and destructing annotated trees (bsd3, generics, library)2016-12-05MartijnVanSteenbergen
servant-streaming-docs700.0Client instances for the 'servant-docs' package. (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
mulang2890.0An intermediate language designed to perform advanced code analysis (language, library, program)2019-01-11flbulgarelli
HCodecs5780.0A library to read, write and manipulate MIDI, WAVE, and SoundFont2 files. (bsd3, codec, library)2020-02-21GeorgeGiorgidze, DonyaQuick, Mokosha
COrdering760.0An algebraic data type similar to Prelude Ordering. (bsd3, data, library)2008-07-23AdrianHey
servant-auth-docs3770.0servant-docs/servant-auth compatibility (authentication, bsd3, library, servant, web)2018-06-18AlpMestanogullari, phadej, jkarni, mchaver, domenkozar
these8532.5An either-or-both data type. (bsd3, data, library, these)2019-07-26JohnWiegley, phadej, cmccann
jason490.0A fast JASONETTE-iOS JSON combinator library for haskell. (bsd3, library, program, value)2016-11-10Lupino
interleave470.0Combinators for supporting interleaving of different behaviours (bsd3, control, library)2011-01-07NeilBrown
derp1500.0Derivative Parsing (bsd3, library, parsing)2012-03-28DavidDarais
plex320.0run a subprocess, combining stdout and stderr (library, mit, system)2018-04-04phlummox
pointless-lenses2450.0Pointless Lenses library (bsd3, generics, library)2012-01-26HugoPacheco
authoring2680.0A library for writing papers (bsd3, library, text)2014-07-07TakayukiMuranushi
MFlow16610.0stateful, RESTful web framework (application-server, bsd3, library, web)2015-09-21AlbertoCorona
unbound-generics5012.0Support for programming with names and binders using GHC Generics (bsd3, language, library)2018-09-18AlekseyKliger
ivor (deprecated in favor of idris)2990.0Theorem proving library based on dependent type theory (bsd3, dependent-types, deprecated, library, theorem-provers)2011-06-16EdwinBrady, GwernBranwen
ADPfusion6320.0Efficient, high-level dynamic programming. (algorithms, bioinformatics, bsd3, data-structures, formal-languages, library)2019-10-01ChristianHoener
monad-parallel4020.0Parallel execution of monadic computations (bsd3, control, library, monads)2018-02-25MarioBlazevic
sdl2-compositor3120.0image compositing with sdl2 - declarative style (gpl, graphics, library)2017-06-12seppeljordan
functional-arrow630.0Combinators that allow for a more functional/monadic style of Arrow programming (bsd3, combinators, library)2010-09-26HenningThielemann
polysoup4880.0Online XML parsing with polyparse and tagsoup (bsd3, library, xml)2016-10-26JakubWaszczuk
derp-lib360.0combinators based on parsing with derivatives (derp) package (bsd3, library, text)2011-11-11KiYungAhn
microlens14312.5A tiny lens library with no dependencies (bsd3, data, lenses, library)2019-07-05Artyom
named-sop1360.0Dependently-typed sums and products, tagged by field name (data, library, mit)2020-02-20sjsch
unbound6770.0Generic support for programming with names and binders (bsd3, compilers-interpreters, generics, language, library)2018-10-15BrentYorgey, sweirich
ess500.0The type-level S combinator in Haskell. (data, library, mit)2015-04-25MichaelOChurch
haphviz3410.0Graphviz code generation with Haskell (library, mit, text)2016-12-02Norfair
redHandlers290.0Monadic HTTP request handlers combinators to build a standalone web apps. (library, web)2009-05-15SergioUrinovsky
pipes-async1140.0A higher-level interface to using concurrency with pipes (bsd3, control, library)2018-07-23JohnWiegley
querystring-pickle2530.0Picklers for de/serialising Generic data types to and from query strings (data, library, network, web)2014-06-23BrendanHay
pipes-cellular440.0Pipes-based combinators for cellular data processing (bsd3, control, library, pipes)2015-07-07patrykz
control-monad-exception8970.0Explicitly typed, checked exceptions with stack traces (control, failure, library, mit, monads)2015-03-12PepeIborra
HUnit-approx1470.0Approximate equality for floating point numbers with HUnit (bsd3, library, testing)2017-10-31RichardEisenberg
graph-rewriting-layout3090.0Force-directed node placement intended for incremental graph drawing (bsd3, graphics, graphs, library)2017-05-23JanRochel
lens-action3050.0Monadic Getters and Folds (bsd3, data, generics, lenses, library)2019-09-13EdwardKmett, EricMertens, ryanglscott
TrieMap7980.0Automatic type inference of generalized tries with Template Haskell. (algorithms, bsd3, library)2013-04-18LouisWasserman
servant-auth-swagger2830.0servant-swagger/servant-auth compatibility (authentication, bsd3, library, servant, web)2018-06-18AlpMestanogullari, phadej, jkarni, mchaver, domenkozar
STMonadTrans5670.0A monad transformer version of the ST monad (bsd3, library, monads)2019-07-06JosefSvenningsson
monad-par7772.25A library for parallel programming based on a monad (bsd3, control, library, monads, parallelism)2019-11-04RyanNewton, SimonMarlow
proof-combinators340.0Proof Combinators used in Liquid Haskell for Theorem Proving (library, mit, theorem-proving)2018-03-28nikivazou
quiver-interleave1180.0Interleave values from multiple Quivers (control, library, mit)2016-11-26IvanMiljenovic
gitlib8032.0API library for working with Git repositories (ffi, library, mit)2018-05-31JohnWiegley
dunai4830.0Generalised reactive framework supporting classic, arrowized and monadic FRP. (bsd3, frp, library, reactivity)2020-01-25IvanPerez, keera_studios_ci, ChristinaZeller, keera_studios_ci_dunai
line-bot-sdk3911.5Haskell SDK for LINE Messaging API (bsd3, library, network, program, web)2020-02-05moleike
grids2060.0 (bsd3, data-structures, library)2019-03-10ChrisPenner
regex-tdfa-utf8180.0This combines regex-tdfa with utf8-string to allow searching over UTF8 encoded lazy bytestrings. (bsd3, library, text)2009-03-22ChrisKuklewicz
wai-predicates4960.0WAI request predicates (library, web)2017-08-06ToralfWittner
semialign2640.0Align and Zip type-classes from the common Semialign ancestor. (bsd3, data, library, these)2019-10-21phadej
pointless-rewrite1080.0Pointless Rewrite library (bsd3, generics, library)2012-01-26HugoPacheco
termination-combinators430.0Termination combinators for forcing non-terminating algorithms to terminate (bsd3, language, library)2011-09-19MaxBolingbroke
mtl-prelude2630.0Reexports of most definitions from "mtl" and "transformers" (library, mit, prelude)2016-05-24NikitaVolkov
hoist-error1920.0Some convenience facilities for hoisting errors into a monad (control, library, mit)2018-06-15JonSterling, schalmers, qfpl
monad-memo4482.0Memoization monad transformer (bsd3, control, library, monad)2018-08-31EduardSergeev
waitfree1980.0A wrapping library for waitfree computation. (concurrency, library, mit, system)2011-06-07YoichiHirai
concatenative1300.0A library for postfix control flow. (bsd3, control, library)2010-07-02SamAnklesaria
rematch1900.0A simple api for matchers (control, library, mit)2013-05-19TomCrayford
acme-php1500.0The flexibility of Haskell and the safety of PHP (acme, bsd3, library)2016-04-20JoeQuinn
kangaroo940.0Binary parsing with random access. (bsd3, library, parsing)2010-02-23StephenTetley
records2760.0A flexible record system (bsd3, data, library, records)2012-01-15WolfgangJeltsch
islink490.0Check if an HTML element is a link (bsd3, html, library, xml)2014-10-07MariosTitas
invertible-syntax960.0Invertible syntax descriptions for both parsing and pretty printing. (bsd3, library, text)2011-09-21TillmannRendel
murder2750.0MUtually Recursive Definitions Explicitly Represented (development, library)2013-11-12MarcosViera
microlens-process2872.0Micro-optics for the process library (bsd3, library, system)2019-09-28topos
fields410.0First-class record field combinators with infix record field syntax. (bsd3, data, library)2010-08-11JussiKnuuttila
DSH11350.0Database Supported Haskell (bsd3, database, library, program)2015-06-03GeorgeGiorgidze, JeroenWeijers, AlexUlrich, AlexUlrich2
friday4430.0A functional image processing library for Haskell. (graphics, lgpl, library)2016-12-17RaphaelJavaux, ThomasDuBuisson
deepseq-generics3180.0GHC.Generics-based Control.DeepSeq.rnf implementation (bsd3, control, library)2016-01-03HerbertValerioRiedel
log-effect-syslog690.0Syslog functions for log-effect (bsd3, control, effect, library, logging, syslog)2019-03-02sickmind
binary-search2530.0Binary and exponential searches (algorithms, bsd3, library)2016-01-22RossPaterson, TakayukiMuranushi
verifiable-expressions1170.0An intermediate language for Hoare logic style verification. (apache, language, library)2019-08-17mdanish, madgen
elerea7082.0A minimalistic FRP library (bsd3, frp, library, reactivity)2016-06-19GergelyPatai
compdata9060.0Compositional Data Types (bsd3, generics, library)2018-09-24PatrickBahr
graphs6120.0A simple monadic graph library (algorithms, bsd3, data-structures, graphs, library)2018-02-24EdwardKmett, ryanglscott
streamly7392.5Beautiful Streaming, Concurrent and Reactive Composition (bsd3, concurrency, control, library, reactivity, streaming)2020-02-20harendra, pranaysashank
data-accessor8500.0Utilities for accessing and manipulating fields of records (bsd3, data, library)2019-05-23HenningThielemann, LukePalmer
TV3320.0Tangible Values -- composable interfaces (bsd3, interfaces, library)2013-08-14ConalElliott
libffi-dynamic720.0LibFFI interface with dynamic bidirectional type-driven binding generation (foreign, library)2019-05-29JamesCook
servant-streaming-server730.0Server instances for the 'servant-streaming' package. (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
rmonad3660.0Restricted monad library (bsd3, control, library)2013-12-23GaneshSittampalam
servant-streaming-client820.0Client instances for the 'servant-streaming' package. (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
hurdle950.0Extract function names from Windows DLLs. (bsd3, program, system)2010-02-24StephenTetley
tardis982.0Bidirectional state monad transformer (bsd3, control, library)2016-04-25DanBurton
libssh23350.0FFI bindings to libssh2 SSH2 client library (http://libssh2.org/) (bsd3, library, network)2018-11-22IlyaPortnov
funcons-values1580.0Library providing values and operations on values in a fixed universe. (compilers-interpreters, library, mit)2019-03-02ltvanbinsbergen
declarative3040.0DIY Markov Chains. (library, math, mit)2018-03-14JaredTobin
type-eq3160.0Type equality evidence you can carry around (bsd3, library, type-system)2015-02-10AdamBergmark, GaborLehel
xml-picklers3200.0XML picklers based on xml-types, ported from hexpat-pickle (bsd3, library, xml)2015-04-01PhilippBalzarek
compilation840.0Haskell functionality for quickly assembling simple compilers. (compilers-interpreters, gpl, language, library)2013-08-20AndreiLapets
local-search1530.0Generalised local search within Haskell, for applications in combinatorial optimisation. (control, library, local-search, optimisation)2013-07-18RichardSenington
yaya1210.0Total recursion schemes. (agpl, library, recursion)2019-11-08sellout
text-manipulate2360.0Case conversion, word boundary manipulation, and textual subjugation. (data, library, text)2015-04-17BrendanHay
uvector3300.0Fast unboxed arrays with a flexible interface (bsd3, data, library)2010-02-15BryanOSullivan, DonaldStewart
aivika16282.0A multi-method simulation library (bsd3, library, simulation)2018-12-21DavidSorokin
nest640.0 (bsd3, library, unclassified)2018-05-03MarkHibberd, lambda_foo
pretty-compact1430.0Pretty-printing library (library, text)2017-08-19JeanPhilippeBernardy
bf-cata470.0 (development, library)2010-10-16ArieMiddelkoop
lens-core2630.0Lenses, Folds and Traversals (bsd2, data, generics, lenses, library)2020-01-23MatthewFarkasDyck
onama1120.0HTML-parsing primitives for Parsec. (bsd3, library, text)2017-02-09williamyaoh
type-functions1850.0Emulation of type-level functions (bsd3, library, type-system)2016-07-21WolfgangJeltsch
arith-encode2040.0A practical arithmetic encoding (aka Godel numbering) library. (bsd3, data, library, serialization, test, testing)2020-02-09emc2, Bodigrim
iteratee-mtl (deprecated in favor of iteratee)1350.0Iteratee-based I/O (bsd3, data, deprecated, library, system)2010-10-27JohnLato
archiver3080.0Archive supplied URLs in WebCite & Internet Archive (bsd3, documentation, library, network, program)2014-01-03GwernBranwen
overhang662.25Hang loose with your lambdas! (combinators, functions, library, mit, utility)2018-02-02jship
testpack (deprecated)3410.0Test Utililty Pack for HUnit and QuickCheck (unmaintained) (deprecated, library, testing)2014-10-27JohnGoerzen, PeterSimons
pathtype5090.0Type-safe replacement for System.FilePath etc (bsd3, library, system)2018-02-17BenMoseley, HenningThielemann
funcons-tools2880.0A modular interpreter for executing funcons (compilers-interpreters, library, mit, program)2019-03-02ltvanbinsbergen
levmar4540.0An implementation of the Levenberg-Marquardt algorithm (bsd3, library, math, numerical)2018-05-07BasVanDijk, RoelVanDijk
gemstone1270.0A simple library of helpers for SDL+GL games. (game, library)2013-02-09CorbinSimpson
stable-memo2460.0Memoization based on argument identity (data, library, mit)2015-07-12JakeMcArthur
netwire-vinylglfw-examples510.0Netwire/GLFW/VinylGL input handling demo (game, mit, program)2016-10-22RandKleisli
morphisms750.0It's all about functions (control, data, library, mit)2019-01-04iokasimovmt
eventloop7880.0A 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)2019-05-01sebaslafleur, LeonSchoorl
pipes-extra770.0Various basic utilities for Pipes. (bsd3, control, enumerator, library)2012-06-09PaoloCapriotti
animate-sdl2910.0sdl2 + animate auxiliary library (bsd3, game, library)2018-05-20jxv
ghci-pretty770.0colored pretty-printing within ghci (development, library, mit)2014-11-13larsk
mapalgebra2010.0Efficient, polymorphic Map Algebra. (bsd3, geography, library)2020-02-02fosskers
obdd3110.0Ordered Reduced Binary Decision Diagrams (library, logic)2018-05-20JohannesWaldmann
wraxml2850.0Lazy wrapper to HaXML, HXT, TagSoup via custom XML tree structure (library, xml)2016-07-27HenningThielemann
constraint-manip520.0Some conviencience type functions for manipulating constraints. (control, library, mit)2017-10-16clinton
reactive-banana-bunch780.0Extend reactive-banana to multiple events per time point (bsd3, frp, library)2018-09-01HenningThielemann
hexpat-pickle1570.0XML picklers based on hexpat, source-code-similar to those of the HXT package (bsd3, library, xml)2012-04-27StephenBlackheath
twidge5340.0Unix Command-Line Twitter and Identica Client (network, program)2014-06-21JohnGoerzen
master-plan1300.0The project management tool for hackers (library, mit, program, tools)2017-08-18rodrigosetti
non-empty3680.0List-like structures with static restrictions on the number of elements (bsd3, data, library)2019-05-23HenningThielemann
first-class-patterns2842.0First class patterns and pattern matching, using type families (bsd3, data, library, pattern)2019-10-01BrentYorgey, ReinerPope, shersh, vrom911
gloss-game1280.0Gloss wrapper that simplifies writing games (bsd3, game, graphics, library)2014-08-03ManuelChakravarty
reflex-animation2030.0Continuous animations support for reflex (bsd3, frp, library)2015-10-20saulzar
lio6742.0Labeled IO Information Flow Control Library (library, mit, security)2019-09-12AmitLevy, DavidMazieres, DeianStefan
dumb-cas1410.0A computer “algebra” system that knows nothing about algebra, at the core. (gpl, library, math)2019-02-12leftaroundabout
process-iterio400.0IterIO Process Library (bsd3, library, system)2012-11-05GregFitzgerald
hs-pkg-config1280.0Create pkg-config configuration files (bsd3, data, development, library)2014-12-24PeterTrsko
iterIO1030.0Iteratee-based IO with pipe operators (bsd3, data, enumerator, library, system)2012-04-19AmitLevy, DavidMazieres, DanielBGiffin
argon22030.0Memory-hard password hash and proof-of-work function (bsd3, cryptography, library)2018-04-07HerbertValerioRiedel, JoeyHess, OliverCharles
yampa-gloss650.0A GLOSS backend for Yampa (graphics, library, mit)2019-02-24IvanPerez
map-reduce-folds870.0foldl wrappers for map-reduce (bsd3, control, library, program)2020-01-09adamCS
bindings-levmar4690.0Low level bindings to the C levmar (Levenberg-Marquardt) library (ffi, library, numerical)2018-05-07BasVanDijk, RoelVanDijk
yet-another-logger2960.0Yet Another Logger (apache, library, logging, program, system)2018-10-05larsk
zoom-cache7450.0A streamable, seekable, zoomable cache file format (bsd3, development, library, program)2012-12-07ConradParker
sneathlane-haste430.0A compositional web UI library, which draws to a Canvas element (bsd2, gui, library)2015-11-13JasonPriestley
terrahs2000.0A Haskell GIS Programming Environment (gis-programs, library)2013-07-07SergioCosta
keera-hails-reactivevalues2821.5Haskell on Rails - Reactive Values (bsd3, development, library)2017-05-01IvanPerez, keera_studios_ci
sessiontypes-distributed690.0Session types distributed (control, gpl, library)2018-01-13ferdinandvw
GuiHaskell580.0A graphical REPL and development environment for Haskell (bsd3, development, program)2008-03-06NeilMitchell
urldisp-happstack410.0Simple, declarative, expressive URL routing -- on happstack. (bsd3, language, library)2009-07-25SterlingClover
comfort-array2412.0Arrays where the index type is a function of the shape type (bsd3, data-structures, library)2019-05-23HenningThielemann
Tainted1440.0Tainted type, and associated operations (bsd3, control, data, library, monads, trans)2015-05-27RossMeikleham
gtk2hs-rpn1500.0Adds a module to gtk2hs allowing layouts to be defined using reverse polish notation. (gui, library)2011-09-23MauricioAntunes
set-monad850.0Set monad (bsd3, data, library, monad)2018-10-11GeorgeGiorgidze
Paraiso4580.0a code generator for partial differential equations solvers. (bsd3, language, library)2015-12-03TakayukiMuranushi
transf2100.0Text transformer and interpreter. (bsd3, compilers-interpreters, library, program, text)2014-08-19HansHoglund
interval360.0Intervals with adherences. (data-structures, gpl, library)2016-08-21julm
unique-logic-tf3090.0Solve simple simultaneous equations (bsd3, library, logic-programming)2019-01-22HenningThielemann
yesod-test-json640.0Utility functions for testing JSON web services written in Yesod (bsd3, library, web)2012-08-17SamAnklesaria
pointedalternative330.0Alternative done right (bsd3, library)2016-08-25Gurkenglas
nvim-hs-ghcid1390.0Neovim plugin that runs ghcid to update the quickfix list (apache, editor, library, program)2019-05-27saep
loops1080.0Fast imperative-style loops (bsd3, control, library)2014-06-13ThomasTuegel
PortFusion3070.0high-performance distributed reverse / forward proxy & tunneling for TCP (gpl, network, program, system)2012-08-19CetinSert
mtlx1860.0Monad transformer library with type indexes, providing 'free' copies. (bsd3, control, library)2012-10-15MarkSnyder
graph-generators1332.0Functions for generating structured or random FGL graphs (algorithms, apache, graphs, library, program)2018-06-08ulikoehler
crypto-enigma2942.0An Enigma machine simulator with display. (bsd3, cryptography, education, library, program)2019-10-09Orome
harpy2780.0Runtime code generation for x86 machine code (bsd3, code-generation, library)2015-05-26DirkKleeblatt, MartinGrabmueller
minilens2282.0A minimalistic lens library, providing only the simplest, most basic lens functionality. (data, gpl, lens, library)2016-05-31RaminHonary
PrimitiveArray-Pretty600.0Pretty-printing for primitive arrays (bsd3, data, library)2017-03-03ChristianHoener
hashflare240.0A library for working with HashFlare.io contracts and hashrates (bsd2, data, library)2017-01-20nbrk
grafana720.0API for creating grafana dashboards represented as json (bsd3, graphics, library, tooling)2019-09-12chessai
category-printf1010.0Highbrow approach to type-safe printf format specifications. (bsd3, library, text)2016-05-08CaleGibbard
dynamic-object1760.0Object-oriented programming with duck typing and singleton classes. (bsd3, data, library)2013-01-15TakayukiMuranushi
gencheck700.0A testing framework inspired by QuickCheck and SmallCheck (bsd3, library, testing)2012-06-19JacquesCarette
monad-task750.0A monad transformer that turns event processing into co-routine programming. (bsd3, control, library)2018-01-04PaulLiu
brotli-streams530.0IO-Streams interface for Brotli (RFC7932) compression (bsd3, codec, compression, io-streams, library)2019-04-20HerbertValerioRiedel
wumpus-core10370.0Pure Haskell PostScript and SVG generation. (bsd3, graphics, library)2012-05-01StephenTetley
probable1452.0Easy and reasonably efficient probabilistic programming and random generation (bsd3, library, math, statistics)2018-02-11AlpMestanogullari
exists560.0Existential datatypes holding evidence of constraints (bsd3, constraints, library)2012-05-15GaborLehel
wumpus-basic7020.0Basic objects and system code built on Wumpus-Core. (bsd3, graphics, library)2012-05-01StephenTetley
acme-zalgo1472.25A somewhat flexible Zalgo̐ te̳͜x̥̖̉̓͞t̍̌̔ ̀̃t̴̢̞̜͓̝r̶̬̆̂̒͟á̧̡͎͔̯̰̕n̹̾̓ͬͦ̍͘ṡ̢͓͉ͮ͆l̠̖̹̗̳̖̽̌ͤ͞a͚̭͙̹̲ͭͩt͈͐o̢̭͇͍̟͐ͬ̾ͪ͜r͇.̸̅ͭ̐̀̊ͨ͛ (acme, library, mit)2018-02-25AntonEkblad
broadcast-chan2510.0Closable, fair, single-wakeup channel type that avoids 0 reader space leaks. (bsd3, library, system)2019-11-29MerijnVerstraaten
hsnoise570.0A coherent 3d noise library. (bsd3, library, noise)2011-05-05ColinHill
chunks640.0Simple template library with static safety (library, text)2007-04-18MatthewSackman
keera-hails-reactive-wx530.0Haskell on Rails - Reactive Fields for WX widgets (bsd3, development, library)2015-06-03IvanPerez, keera_studios_ci
bff1910.0Bidirectionalization for Free! (POPL'09) (data, library, public-domain)2011-03-22DanielSeidel, JanisVoigtlaender, JoachimBreitner
adaptive-tuple850.0Self-optimizing tuple types (bsd3, data, library)2010-03-16JohnLato
rados-haskell1332.0librados haskell bindings (bsd3, library, system)2014-08-22ChristianMarie
TeX-my-math1440.0Render general Haskell math to LaTeX. Or: math typesetting with high signal-to-noise–ratio. (gpl, library, math, program)2019-07-11leftaroundabout
count280.0Bijective mappings between values and possibly infinite prefixes of [0..] (bsd3, data, library)2014-06-10Maxdamantus
references4130.0Selectors for reading and updating data. (bsd3, control, library)2017-11-28lazac
pipes-core (deprecated in favor of pipes)650.0Compositional pipelines (bsd3, control, deprecated, enumerator, library)2012-04-09PaoloCapriotti
brotli482.0Brotli (RFC7932) compression and decompression (codec, compression, gpl, library)2019-04-20HerbertValerioRiedel
template-hsml1390.0Haskell's Simple Markup Language (bsd3, library, template, templating, web)2012-08-30PetrPilar
semialign-extras360.0Extra functions for working with Semialigns (bsd3, data, library)2019-11-15qfpl, jack
kinds1580.0Emulation of subkinds and subkind polymorphism (bsd3, library, type-system)2012-01-15WolfgangJeltsch
data-filter220.0Utilities for filtering (bsd2, data, library)2018-05-17boonami
proplang390.0A library for functional GUI development (bsd3, library, user-interfaces)2007-08-15NeilMitchell
tower (deprecated in favor of numhask)250.0A numeric tower (bsd3, deprecated, library, mathematics)2017-02-21tonyday567
metaheuristics490.0Generalised local search within Haskell, for applications in combinatorial optimisation. (control, library, local-search, optimisation)2019-10-04richardjamessenington
stt880.0A monad transformer version of the ST monad (control, library, mit)2016-11-06mckeankylej
dzen-utils630.0Utilities for creating inputs for dzen. (library, system)2012-05-31FelipeLessa, javran, ianclement
unbound-kind-generics470.0Support for programming with names and binders using kind-generics (bsd3, language, library)2019-09-10AlejandroSerrano
memo-ptr480.0Pointer equality memoization (control, library, mit)2015-05-31edofic
dynamic-pp770.0A pretty-print library that employs a dynamic programming algorithm for optimal rendering. (bsd3, library, text)2015-07-19emc2
error-message1140.0Composable error messages. (bsd3, development, error-handling, library)2010-11-15GregoryCrosswhite
yuiGrid460.0Grids defined by layout hints and implemented on top of Yahoo grids. (library, web)2009-05-15SergioUrinovsky
seclib2970.0A simple library for static information-flow security in Haskell (bsd3, library, security)2014-12-15AlejandroRusso
Yampa-core480.0Library for programming hybrid systems. (bsd3, frp, library, reactivity)2015-06-25NikolayOrlyuk
workflow-extra820.0Utilities (e.g. Googling the clipboard contents) for the `workflow` pacakge (bsd3, library, program, todo)2017-05-04sboo
web-page730.0Monoidally construct web pages (bsd3, library, web)2014-09-28ErtugrulSoeylemez, esz
HPlot1070.0A minimal monadic PLplot interface for Haskell (bsd3, foreign, graphics, library, program)2009-08-04YakovZaytsev
encode-string390.0Safe string conversion and encoding (data, library, mit, string, text)2017-03-15minad
dpor (deprecated in favor of dejafu)830.0A generic implementation of dynamic partial-order reduction (DPOR) for testing arbitrary models of concurrency. (deprecated, library, mit, testing)2016-06-06barrucadu
binary-derive790.0Automatic deriving of Binary using GHC.Generics (data, gpl, library)2011-11-05JaredHance
curl-aeson540.0Communicate with HTTP service using JSON (bsd3, json, library, network, web)2014-08-24JoelLehtonen
narc1230.0Query SQL databases using Nested Relational Calculus embedded in Haskell. (bsd3, database, library)2011-08-09EzraCooper
brotli-conduit280.0Conduit interface for Brotli (RFC7932) compression. (bsd3, codec, compression, conduit, library)2019-04-20HerbertValerioRiedel
pipes-brotli310.0Brotli (RFC7932) compressors and decompressors for the Pipes package (bsd3, codec, compression, library, pipes)2019-04-20HerbertValerioRiedel
Nutri290.0A little library to calculate nutrition values of food items. (library, public-domain, utils)2013-11-27frosch03
AERN-Net (deprecated in favor of aern2-mp, aern2-real)1250.0Compositional lazy dataflow networks for exact real number computation (bsd3, deprecated, distributed-computing, library, math)2009-07-29MichalKonecny
typedflow360.0Typed frontend to TensorFlow and higher-order deep learning (deep-learning, lgpl, library)2017-10-26JeanPhilippeBernardy
type-digits1130.0Arbitrary-base type-level digits (bsd3, library, type-system)2013-07-31NicolasFrisby
wahsp370.0A haskell binding of the Web Audio API ala blank-canvas (bsd3, library, web)2016-09-18nshaheed
aivika-gpss1790.0GPSS-like DSL for Aivika (bsd3, library, simulation)2018-03-17DavidSorokin
semi-iso2010.0Weakened partial isomorphisms, reversible computations. (control, data, library, mit)2014-12-12pawel834
streaming-brotli480.0Streaming interface for Brotli (RFC7932) compression (bsd3, codec, compression, library, streaming)2019-04-22HerbertValerioRiedel
Prelude980.0A Prelude module replacement (bsd3, library, prelude)2018-08-29HerbertValerioRiedel
app-lens1020.0applicative (functional) bidirectional programming beyond composition chains (bsd3, data, lenses, library)2016-09-25kztk
open-pandoc (deprecated in favor of pandoc)660.0Conversion between markup formats (deprecated, text)2010-04-14PeterSimons
yall1190.0Lenses with a southern twang (bsd3, data, library)2012-09-21BrandonSimmons
rpm260.0Cozy little project to question unruly rpm packages. (bsd3, library, system)2010-11-01EricStolten
MC-Fold-DP670.0Folding algorithm based on nucleotide cyclic motifs. (bioinformatics, gpl, library, program)2012-11-12ChristianHoener
equeue330.0Application level triggered, and edge triggered event multiqueues. (bsd3, concurrency, library)2019-01-01KevinCotrone, davean
dunai-core500.0Generalised reactive framework supporting classic, arrowized and monadic FRP. (Core library fork.) (bsd3, frp, library, reactivity)2018-10-21turion
network-uri-flag330.0Pseudo-package encapsulating flag(network-uri) Cabal boilerplate (bsd3, library, network)2016-08-27HerbertValerioRiedel
function-instances-algebra270.0Instances of the Algebra.* classes for functions (bsd3, library, math)2012-03-25TobiasBrandt
SNet300.0Declarative coördination language for streaming networks. (language, lgpl, library)2012-09-24MerijnVerstraaten
tasty-integrate190.0automated integration of QuickCheck properties into tasty suites (bsd3, program, testing)2014-02-02jfeltz
unique-logic1600.0Solve simple simultaneous equations (bsd3, library, logic-programming)2018-02-17HenningThielemann
tree-traversals660.0Functions and newtype wrappers for traversing Trees (data, library)2019-12-11NoahEasterly
porcupine-core860.0Express portable, composable and reusable data tasks and pipelines (arrows, combinators, control, data, json, library, mit, numerical, pipes, program, streaming)2019-10-09YvesPares
json-tokens890.0Tokenize JSON (bsd3, data, library)2019-09-30andrewthad
fpnla750.0A library for NLA operations (bsd3, library, math)2014-02-04mblanco
primitive-simd482.0SIMD data types and functions (bsd3, data, library)2016-02-01JonasScholl
data-dispersal930.0Space-efficient and privacy-preserving data dispersal algorithms. (cryptography, data, lgpl, library)2014-10-05PeterRobinson
perdure1170.0Robust persistence for acyclic immutable data (database, library, program)2012-09-26PatrickPremont
fuzzy-parse660.0Tools for processing unstructured text data (library, mit, parsing, text)2020-01-03voidlizard
schedule880.0Pure deterministic scheduled computations (control, delay, gpl, library, schedule, time, timeout)2019-12-20infinity0

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