Package search

Name
DLs
Rating
Description
Tags
Last U/L
Maintainer
JSON-Combinator (deprecated in favor of lens)670.0A combinator library on top of a generalised JSON type (bsd3, combinators, deprecated, json, library)2011-04-03TonyMorris
combinator-interactive220.0SKI Combinator interpreter (bsd3, language, library, program)2013-09-07FumiakiKinoshita
guess-combinator120.0Generate simple combinators given their type (bsd3, development, library)2012-05-16EtienneLaurin
data-combinator-gen240.0Generate a special combinator from any data type. (data, library, mit)2019-05-26bolt12
JSON-Combinator-Examples (deprecated in favor of lens)40.0Example uses of the JSON-Combinator library. (bsd3, combinators, deprecated, library)2010-12-20TonyMorris
megaparsec23432.75Monadic parser combinators (bsd2, library, parsing)2021-09-25HerbertValerioRiedel, TikhonJelvis, mrkkrp
parser-combinators10540.0Lightweight package providing commonly useful parser combinators (bsd3, library, parsing)2021-02-06HerbertValerioRiedel, mrkkrp
parsec15752.75Monadic parser combinators (bsd2, bsd3, library, parsing)2021-11-20AntoineLatter, HerbertValerioRiedel, phadej
exact-combinatorics4080.0Efficient exact computation of combinatoric functions. (bsd3, library, math, statistics)2021-11-03WrenThornton, WrenRomano
trifecta16452.5A modern parser combinator library with convenient diagnostics (bsd3, diagnostics, library, logging, parsing, pretty-printer, text)2021-11-16EdwardKmett, EricMertens, quchen, ryanglscott
polyparse9240.0A variety of alternative parser combinator libraries. (library, parsing, text)2019-08-22MalcolmWallace, phadej
attoparsec48702.75Fast combinator parsing for bytestrings and text (bsd3, library, parsing, text)2021-10-30BasVanDijk, BenGamari, BryanOSullivan
parsley4882.25A fast parser combinator library backed by Typed Template Haskell (bsd3, library, parsing)2021-11-24j_mie6
parsley-core7822.25A fast parser combinator library backed by Typed Template Haskell (bsd3, library, parsing)2021-11-24j_mie6
HaskellForMaths1590.0Combinatorics, group theory, commutative algebra, non-commutative algebra (bsd3, library, math)2018-12-15DavidAmos
fast-combinatorics482.0Fast combinatorics. (bsd3, library, numerics)2018-01-02
bookhound1221.75Simple Parser Combinators & Parsers for usual data formats (library, parsers)2021-11-18albertprz
gll1050.0GLL parser with simple combinator interface (bsd3, compilers, library)2020-05-03ltvanbinsbergen
parsers7072.25Parsing combinators (bsd3, library, parsing, text)2019-05-02EdwardKmett, EricMertens, ryanglscott
grammatical-parsers850.0parsers that combine into grammars (bsd3, library, parsing, program, text)2021-07-11MarioBlazevic
inchworm1380.0Simple parser combinators for lexical analysis. (library, mit, parsing)2019-01-02BenLippmeier
IndentParser (deprecated)180.0Combinators for parsing indentation based syntatic structures (deprecated, library, parsing)2007-10-19PiyushKurur
indents670.0indentation sensitive parser-combinators for parsec (bsd3, library, parsing, text)2019-10-02JasperVanDerJeugt, SamAnklesaria
definitive-parser160.0A parser combinator library for the Definitive framework (library, parsers)2014-11-11MarcCoiffier
parsec3430.0Monadic parser combinators (bsd3, library, parsing)2015-02-16ChristianMaeder
simple-parser360.0Simple parser combinators (bsd3, library, parsing)2021-07-21ejconlon
parsix380.0Parser combinators with slicing, error recovery, and syntax highlighting (bsd3, library, parsing)2020-03-01OlleFredriksson
uu-parsinglib2140.0Fast, online, error-correcting, monadic, applicative, merging, permuting, interleaving, idiomatic parser combinators. (library, mit, parsercombinators, parsercombinators-parsing-text, parsing, parsing-text, text, text.parsercombinators, text.parsercombinators-parsing-text)2016-04-12DoaitseSwierstra
parsec1360.0Portable monadic parser combinators (bsd3, library, parsing)2021-06-22ChristianMaeder
ponder100.0PEG parser combinator (library, mit, parsing)2014-03-06matt
combinatorics (deprecated in favor of exact-combinatorics)80.0Efficient computation of common combinatoric functions. (bsd3, deprecated, library, math, statistics)2012-01-29WrenThornton
uu-tc200.0Haskell 98 parser combinators for INFOB3TC at Utrecht University (bsd3, library, parsing, text)2015-11-11TrevorMcDonell, joaopizani
ebnf-bff150.0Parser combinators & EBNF, BFFs! (ebnf, library, metalanguage, mit, parsing, program, text)2015-09-20Lokidottir
fastparser492.0A fast, but bare bones, bytestring parser combinators library. (bsd3, library, parsing)2020-08-21SimonMarechal
yoda230.0Parser combinators for young padawans (bsd3, library, text)2018-11-05NicolasWu
parcom-lib530.0A simple parser-combinator library, a bit like Parsec but without the frills (bsd3, library, text)2015-07-08TobiasDammers
substring-parser170.0Match / replace substrings with a parser combinators. (apache, library, parsing, text)2018-07-22igrep
scanner1120.0Fast non-backtracking incremental combinator parsing for bytestrings (bsd3, library, parsing)2019-09-18YurasShumovich
parsec-pratt90.0Pratt Parser combinator for Parsec (library, mit, program, text)2016-08-02jh3141
applicative-parsec90.0An applicative parser combinator library (gpl, language, library)2015-04-09KarlVoelker
parco-parsec (deprecated in favor of parser-combinators)80.0Generalised parser combinators - Parsec interface (bsd3, deprecated, library, parsing)2013-11-27TroelsHenriksen
parsec290.0Monadic parser combinators (bsd3, library, parsing)2015-11-17AntoineLatter
blaze-markup16630.0A blazingly fast markup combinator library for Haskell (bsd3, library, text)2021-03-04DeepakJois, JasperVanDerJeugt
parco (deprecated in favor of parser-combinators)30.0Generalised parser combinators (bsd3, deprecated, library, parsing)2013-11-27TroelsHenriksen
permute (deprecated in favor of parser-combinators)90.0Generalised permutation parser combinator (bsd3, deprecated, library, parsing)2011-09-22TroelsHenriksen
PArrows140.0Arrow parser combinators similar to Parsec (bsd3, library, parsing)2009-01-24GwernBranwen
optparse-applicative21323.0Utilities and combinators for parsing command line options (bsd3, cli, library, options, parsing, system)2020-11-21PaoloCapriotti, huw
servant11743.0A family of combinators for defining webservices APIs (bsd3, library, servant, web)2021-06-23AlpMestanogullari, DavidJohnson, SoenkeHahn, ChristianMarie, phadej, MatthiasFischmann, jkarni, maksbotan, arianvp, fisx
parco-attoparsec (deprecated in favor of parser-combinators)80.0Generalised parser combinators - Attoparsec interface (bsd3, deprecated, library, parsing)2013-11-27TroelsHenriksen
symantic-parser120.0Parser combinators statically optimized and staged via typed meta-programming (agpl, library, parsing)2021-08-31julm
fast-arithmetic10052.0Fast functions on integers. (algorithms, ats, bsd3, combinatorics, ffi, library, math, number-theory, numerics)2021-11-17vmchale
blaze-html12152.25A blazingly fast HTML combinator library for Haskell (bsd3, library, text)2019-10-02JasperVanDerJeugt, SimonMeier
incremental-parser1980.0Generic parser library capable of providing partial results from partial input. (gpl, library, parsing)2021-03-07MarioBlazevic
split10972.25Combinator library for splitting lists. (bsd3, library, list)2020-02-22BrentYorgey
parser-combinators-tests160.0Test suite of parser-combinators (bsd3, parsing)2021-02-06mrkkrp
hspec-expectations8770.0Catchy combinators for HUnit (library, mit, testing)2016-10-16SimonHengel, SoenkeHahn, parsonsmatt
either7432.0Combinators for working with sums (bsd3, control, library, monads)2019-05-02EdwardKmett, ryanglscott, GeorgeWilson
parsimony (deprecated)110.0Monadic parser combinators derived from Parsec (bsd3, deprecated, library, parsing)2012-02-06IavorDiatchki
servant-server10092.75A family of combinators for defining webservices APIs and serving them (bsd3, library, program, servant, web)2021-06-23AlpMestanogullari, DavidJohnson, SoenkeHahn, ChristianMarie, phadej, MatthiasFischmann, jkarni, maksbotan, arianvp, fisx
quack90.0Convenience parser combinators for URI query strings (bsd3, library, web)2016-08-30athanclark
xml-enumerator-combinators40.0Parser combinators for xml-enumerator and compatible XML parsers. (bsd3, enumerator, library, xml)2011-04-06AristidBreitkreuz
retry8652.5Retry combinators for monadic actions that may fail (bsd3, control, library)2021-07-06MichaelXavier, OzgunAtaman
aeson-combinators510.0Aeson combinators for dead simple JSON decoding (bsd3, json, library, text, web)2021-03-13MarekFajkus
formatting15232.25Combinator-based type-safe formatting (like printf() or FORMAT) (bsd3, library, text)2021-06-29ChrisDone, AlexChapman
fungll-combinators90.0GLL parser with simple combinator interface (bsd3, compilers, library)2019-03-29ltvanbinsbergen
paripari340.0Parser combinators with fast-path and slower fallback for error reporting (library, mit, program, text)2020-06-17minad
sexp-grammar900.0Invertible grammar combinators for S-expressions (bsd3, language, library)2021-10-10EugeneSmolanka, SergeyVinokurov
cassette100.0A combinator library for simultaneously defining parsers and pretty printers. (bsd3, library, parsing, text)2012-03-19MathieuBoespflug
uulib922.0Haskell Utrecht Tools Library (bsd3, library, parsing)2019-02-14ArieMiddelkoop, AtzeDijkstra, DoaitseSwierstra, JeroenBransen, PhilippHausmann
show-combinators4880.0Combinators to write Show instances (library, mit, text)2020-03-22lyxia
monad-par-extras5290.0Combinators and extra features for Par monads (bsd3, control, library, monads, parallelism)2013-07-12RyanNewton
composition-prelude7932.0Higher-order function combinators (bsd3, control, data, library)2020-11-10vmchale
uu-interleaved230.0An interleaving combinator for use with applicative style implementations. (applicative, control, library, mit, parsing, text)2018-08-06DoaitseSwierstra
hashable60631.5A class for types that can be converted to a hash value (bsd3, data, library)2021-11-20BryanOSullivan, HerbertValerioRiedel, JohanTibell, MilanStraka, phadej
penntreebank-megaparsec60.0Parser combinators for trees in the Penn Treebank format (bsd3, library, natural-language-processing, parsing)2020-05-14twotrees12
picoparsec282.0Fast combinator parsing for bytestrings and text (bsd3, library, parsing, text)2015-08-13MarioBlazevic
data-hash2570.0Combinators for building fast hashing functions. (bsd3, data, library)2015-05-20DanielGorin
functor-combinators990.0Tools for functor combinator-based program design (bsd3, data, library)2021-09-30jle
servant-auth2780.0Authentication combinators for servant (authentication, bsd3, library, servant, web)2020-10-05AlpMestanogullari, DavidJohnson, phadej, MatthiasFischmann, jkarni, mchaver, domenkozar, maksbotan, arianvp
blaze-svg2632.0SVG combinator library (bsd3, graphics, library)2017-03-13BrentYorgey, DeepakJois
bytestringparser-temporary90.0Combinator parsing with Data.ByteString.Lazy (bsd3, library, parsing, text)2009-09-15JasonDusek
ParsecTools230.0Parsec combinators for more complex objects. (gpl, library, parsing)2010-09-22ChristianHoener
html1600.0HTML combinator library (bsd3, library, web)2008-10-11DonaldStewart
language-pig240.0Pig parser in haskell. (language, library, mit)2013-12-16elisehuard
tagsoup-megaparsec132.0A Tag token parser and Tag specific parsing combinators (bsd3, library, xml)2016-08-03kseo
invertible-grammar480.0Invertible parsing combinators framework (bsd3, language, library)2021-10-10EugeneSmolanka
tasty33042.5Modern and extensible testing framework (library, mit, testing)2021-11-20EdwardKmett, OliverCharles, RomanCheplyaka, bergey
type-errors-pretty1602.0Combinators for writing pretty type errors easily (library, mpl, type-errors, types)2021-08-02shersh, vrom911
config-parser630.0Parse config files using parsec and generate parse errors on unhandled keys (library, mit, text)2018-01-21BenHamlin
sax90.0Monadic streaming XML parser (bsd3, library, sax, text)2018-04-13dredozubov
aeson-with500.0withXField combinators for aeson (aeson, data, library, mit)2020-08-09locallycompact
parsec-tagsoup100.0Parsec parsers for Tagsoup tag streams (library, public-domain, xml)2011-12-30PepeIborra
linear19232.5Linear Algebra (algebra, bsd3, library, math)2021-11-16AnthonyCowley, EdwardKmett, EricMertens, ryanglscott
bytestringreadp130.0A ReadP style parser library for ByteString (bsd3, library, text)2007-12-13GracjanPolak
XSaiga372.0An implementation of a polynomial-time top-down parser suitable for NLP (attribute-grammars, bsd3, library, memoization, natural-language-processing, parser-combinators, parsing, program, text)2020-10-07InBetweenNames
combinatorial380.0Count, enumerate, rank and unrank combinatorial objects (bsd3, library, math, statistics)2018-08-31HenningThielemann
binary-parsers1270.0Extends binary with parsec/attoparsec style parsing combinators. (bsd3, data, library)2019-06-26winterland
xhtml1090.0An XHTML combinator library (bsd3, library, pretty-printer, web, xml)2018-03-09BenGamari, BjornBringert, ChrisDornan, HerbertValerioRiedel, IanLynagh
between570.0Function combinator "between" and derived combinators (bsd3, data, library)2016-01-09PeterTrsko
lucid14992.5Clear to write, read and edit DSL for HTML (bsd3, library, web)2021-11-09ChrisDone
argparser340.0Command line parsing framework for console applications (bsd3, console, library)2014-11-27sbergot
parsec-parsers (deprecated in favor of parsers)120.0Parsing instances for Parsec (bsd3, deprecated, library, parsing, text)2013-11-05DagOdenhall, EdwardKmett
tagsoup-parsec310.0Tokenizes Tag, so [ Tag ] can be used as parser input. (bsd3, library, xml-)2011-11-29JohnnyMorrice, OzgunAtaman
QuickCheck23452.75Automatic testing of Haskell programs (bsd3, library, testing)2020-11-14DonaldStewart, KoenClaessen, NickSmallbone, SimonMarlow
frisby250.0Linear time composable parser for PEG grammars (bsd3, library, text)2020-03-31BenGamari, ChrisDone
xml-types7160.0Basic types for representing XML (library, mit, text, xml)2020-07-13StephenWeber
phaser340.0Incremental multiple pass parser library. (bsd3, library, text)2018-11-20quick_dudley
JsonGrammar900.0Combinators for bidirectional JSON parsing (bsd3, json, language, library)2016-10-07MartijnVanSteenbergen
digit1182.0A data-type representing digits 0-9 and other combinations (bsd3, data, library)2020-10-30TonyMorris, qfpl
semialign16910.0Align and Zip type-classes from the common Semialign ancestor. (bsd3, data, library, these)2021-10-31phadej
ad30342.5Automatic Differentiation (bsd3, library, math)2021-11-07EdwardKmett, EricMertens, ryanglscott
data-memocombinators982.0Combinators for building memo tables. (bsd3, data, library)2013-12-14DmitryMalikov, LukePalmer, ThomasDuBuisson
binary-ieee754590.0Backport ieee754 float double combinators to older binary (bsd3, data, library)2016-10-24winterland
composition1230.0Combinators for unorthodox function composition (bsd3, data, library)2021-04-04DanBurton
parallel-io1500.0Combinators for executing IO actions in parallel on a thread pool. (bsd3, concurrency, library)2021-06-03MaxBolingbroke
foldl13302.5Composable, streaming, and efficient left folds (bsd3, control, library)2021-07-07GabrielGonzalez
kure670.0Combinators for Strategic Programming (bsd3, language, library)2021-04-04AndyGill, NeilSculthorpe
simple-cmd-args1020.0Simple command args parsing and execution (bsd3, library, system)2021-06-29JensPetersen
base10202.75Basic libraries (bsd3, library, prelude)2021-10-29AustinSeipp, BenGamari, HerbertValerioRiedel, IanLynagh, PaoloCapriotti, wz1000
these19042.5An either-or-both data type. (bsd3, data, library, these)2020-07-14JohnWiegley, phadej, cmccann
hspec-expectations-pretty-diff450.0Catchy combinators for HUnit (library, mit, testing)2019-10-16myfreeweb
from-sum602.0Combinators for working with Maybe and Either (bsd3, control, library)2020-01-25cdepillabout
lens54253.0Lenses, Folds and Traversals (bsd2, data, generics, lenses, library)2021-11-16EdwardKmett, EricMertens, JohnWiegley, ryanglscott
FPretty460.0Efficient simple pretty printing combinators (bsd3, library, text.prettyprint)2015-11-16OlafChitil
Yampa1562.5Elegant Functional Reactive Programming Language for Hybrid Systems (bsd3, frp, library, reactivity)2021-10-08GeorgeGiorgidze, IvanPerez, keera_studios_ci
parsnip50.0A fast, minimal parser (graphics, library)2021-03-24EdwardKmett
functor-combo930.0Functor combinators with tries & zippers (bsd3, data, library)2015-05-04ConalElliott
luthor100.0Tools for lexing and utilizing lexemes that integrate with Parsec. (bsd3, language, library, text)2015-11-25ZankokuOkuno
io-streams10792.5Simple, composable, and easy-to-use stream I/O (bsd3, data, io-streams, library, network)2021-05-10DougBeardsley, GregoryCollins
srcloc2560.0Data types for managing source code locations. (bsd3, data, library)2021-04-29GeoffreyMainland
yaml-combinators780.0YAML parsing combinators for improved validation and error reporting (library, mit, text)2020-09-06RomanCheplyaka
haskelldb600.0A library of combinators for generating and executing SQL statements. (bsd3, database, library)2014-09-29BjornBringert, JustinBailey
describe1080.0Combinators for describing binary data structures (bsd3, data, library)2020-02-08riuga
scc250.0Streaming component combinators (combinators, concurrency, control, library, program)2021-02-27MarioBlazevic
SimpleH (deprecated in favor of definitive-base)300.0A light, clean and powerful Haskell utility library (deprecated, library, prelude)2013-11-28MarcCoiffier
hexpat-streamparser350.0 (bsd3, library, unclassified)2021-04-06KristofBastiaensen
capability502.0Extensional capabilities and deriving combinators (bsd3, control, library)2021-07-21aherrmann
cv-combinators540.0Functional Combinators for Computer Vision (ai, gpl, graphics, library, program)2015-08-12NoamLewis
servant-snap762.0A family of combinators for defining webservices APIs and serving them (bsd3, library, program, web)2020-09-07imalsogreg
NumberTheory110.0A library for number theoretic computations, written in Haskell. (gpl, library, math)2016-02-17cfredric
lens-simple550.0simplified import of elementary lens-family combinators (bsd3, lenses-----, library)2016-06-23MichaelThompson
logging-effect-extra-handler110.0Handy logging handler combinators (library, mit, other, program)2018-08-06jship
extensible2830.0Extensible, efficient, optics-friendly data types and effects (bsd3, data, library, monads, records)2021-10-19FumiakiKinoshita
decidable450.0Combinators for manipulating dependently-typed predicates. (bsd3, dependent-types, library)2020-02-03jle
phonetic-languages-phonetics-basics360.0A library for working with generalized phonetic languages usage. (game, language, library, math, mit, phonetic-languages, phonetics, program, writing-systems)2021-09-04OleksandrZhabenko
permutation570.0A library for permutations and combinations. (bsd3, data-structures, library, math)2015-01-20PatrickPerry, spacekitteh
monad-parallel1620.0Parallel execution of monadic computations (bsd3, control, library, monads)2021-07-31MarioBlazevic
yst750.0Builds a static website from templates and data in YAML or CSV files. (gpl, program, text)2021-08-13JohnMacFarlane
fadno-xml480.0XML/XSD combinators/schemas/codegen (bsd2, library, music, xml)2020-12-26spopejoy
indentation670.0Indentation sensitive parsing combinators for Parsec and Trifecta (bsd3, library, parsing)2018-10-06MichaelAdams, OmerAgacan, AlekseyKliger
pointless-fun300.0Some common point-free combinators. (bsd3, combinators, composition, library, utils)2021-10-18WrenThornton, WrenRomano
pappy110.0Packrat parsing; linear-time parsers for grammars in TDPL. (bsd3, program, text)2012-10-21ChrisDone
orgmode-parse970.0A collection of Attoparsec combinators for parsing org-mode flavored documents. (bsd3, data, library)2018-10-31ParnellSpringmeyer
amazonka-iam-policy300.0Amazon IAM Policy Document DSL and Combinators. (aws, cloud, library, mpl, network)2018-08-14BrendanHay
string-combinators530.0Polymorphic functions to build and combine stringlike values (bsd3, data, library)2014-06-13BasVanDijk
composition-extra770.0Combinators for unorthodox structure composition (bsd3, data, library)2015-09-17athanclark
iteratee2310.0Iteratee-based I/O (bsd3, data, library, system)2014-05-19JohnLato
servant-github-webhook150.0Servant combinators to facilitate writing GitHub webhooks. (library, mit, web)2019-08-21tsani
aeson-filthy320.0Several newtypes and combinators for dealing with less-than-cleanly JSON input. (bsd3, json, library, text, web)2019-12-08AlecHeller
conduit-audio370.0Combinators to efficiently slice and dice audio streams (bsd3, library, sound)2017-09-02mtolly
linkcore220.0Combines multiple GHC Core modules into a single module (bsd3, language, program)2010-05-25TimChevalier
STMonadTrans6500.0A monad transformer version of the ST monad (bsd3, library, monads)2021-08-21AndreasAbel, JosefSvenningsson
HTTP12182.0A library for client-side HTTP (bsd3, library, network)2021-03-20BjornBringert, BryanOSullivan, DonaldStewart, DuncanCoutts, GaneshSittampalam, JohanTibell, SigbjornFinne
data-aviary440.0Combinator birds. (bsd3, combinators, library)2013-04-24StephenTetley
servant-matrix-param360.0Matrix parameter combinator for servant (library, mit, web)2016-11-03SoenkeHahn, jkarni
antiquoter180.0Combinator library for quasi- and anti-quoting. (bsd3, library, template-haskell)2013-04-14LarsCorbijn
couchdb-conduit1710.0Couch DB client library using http-conduit and aeson (bsd3, conduit, database, library)2012-11-02AlexanderDorofeev
grammar-combinators370.0A parsing library of context-free grammar combinators. (library, parsing)2013-01-02DominiqueDevriese
compstrat190.0Strategy combinators for compositional data types (bsd3, generics, language, library)2015-03-24JamesKoppel
graph-rewriting-ski880.0Two evalutors of the SKI combinator calculus as interactive graph rewrite systems (application, bsd3, compilers-interpreters, program)2017-05-23JanRochel
fused-effects-lens642.0Monadic lens combinators for fused-effects. (bsd3, control, library)2020-07-10patrick_thomson, robrix
indentation-trifecta190.0Indentation sensitive parsing combinators for Trifecta (bsd3, library, parsing)2018-10-06AlekseyKliger
selections340.0Combinators for operating with selections over an underlying functor (bsd3, data-structures, functors, library)2020-10-21ChrisPenner
streamly3592.5Dataflow programming and declarative concurrency (array, bsd3, concurrency, dataflow, filesystem, library, list, logic, network, non-determinism, parsing, pipes, reactivity, streaming, streamly, time, unicode)2021-06-27harendra, pranaysashank, adithyaov
mcmc-samplers132.0Combinators for MCMC sampling (bsd3, library, machine-learning, math, numeric, statistics)2014-11-10pravnar, z
ribbit542.0Type-level Relational DB combinators. (database, library, mit)2020-04-22rickowens
mvc-updates80.0Concurrent and combinable updates (bsd3, concurrency, control, library)2014-09-23GabrielGonzalez
shade290.0A control structure used to combine heterogenous types with delayed effects. (bsd3, control, library)2017-05-20fredefox
rio-prettyprint1260.0Pretty-printing for RIO (bsd3, development, library)2020-08-05MichaelSnoyman, borsboom, fpcomplete
monad-par6642.25A library for parallel programming based on a monad (bsd3, control, library, monads, parallelism)2019-11-04RyanNewton, SimonMarlow
holmes350.0Tools and combinators for solving constraint problems. (data, library, mit)2021-01-04i_am_tom
shakebook1270.0Shake-based technical documentation generator; HTML & PDF (library, mit, web)2020-11-05locallycompact
Shpadoinkle-lens150.0Lens combinators for Shpadoinkle applications. (bsd3, library, web)2021-06-02fresheyeball
test-shouldbe (deprecated in favor of hspec-expectations)250.0Catchy combinators for HUnit (deprecated, library, mit, testing)2015-04-04
lens-prelude130.0Alternate prelude that exports lens combinators (bsd3, library, web)2015-10-27andrewthad
scotty-haxl90.0Combine scotty and haxl (bsd3, concurrency, library, scotty, web)2020-09-02Lupino
tax140.0Types and combinators for taxes (agpl, finance, library)2018-08-23frasertweedale
elm-hybrid150.0Combine Elm with Haskell for data based applications (bsd3, library, web)2016-07-04matsrietdijk
chalkboard260.0Combinators for building and processing 2D images. (bsd3, graphics, library)2009-12-02AndyGill
sv330.0Encode and decode separated values (CSV, PSV, ...) (bsd3, csv, library, text, web)2020-04-26qfpl, GeorgeWilson
vector-split290.0Combinator library for splitting vectors. (data, data-structures, library, mit)2017-01-31fho
jason120.0A fast JASONETTE-iOS JSON combinator library for haskell. (bsd3, library, program, value)2016-11-10Lupino
microlens12662.5A tiny lens library with no dependencies (bsd3, data, lenses, library)2020-11-17Artyom
servant-auth-server2730.0servant-server/servant-auth compatibility (authentication, bsd3, library, servant, web)2020-10-06AlpMestanogullari, DavidJohnson, phadej, MatthiasFischmann, jkarni, mchaver, domenkozar, maksbotan, arianvp
xilinx-lava950.0The Lava system for Xilinx FPGA design with layout combinators. (bsd3, hardware, library, program)2014-08-21SatnamSingh
caseof140.0Combinators for casing on constructors (bsd3, development, library)2018-03-07ChrisDone
async-combinators (deprecated)150.0Async combinators (concurrency, deprecated, library, mpl)2018-07-23serokell
dph-lifted-vseg260.0Data Parallel Haskell lifted array combinators. (bsd3, data-structures, library)2012-10-25BenLippmeier
pipes-fluid350.0Reactively combines Producers so that a value is yielded as soon as possible. (bsd3, control, frp, library, pipes)2018-06-01louispan
cflp950.0Constraint Functional-Logic Programming in Haskell (bsd3, control, library)2009-06-04SebastianFischer
symantic-base180.0Basic symantics combinators for Embedded Domain-Specific Languages (EDSL) (agpl, data-structures, library)2021-10-28julm
servant-namedargs180.0Combinators for servant providing named parameters (bsd3, library, web)2019-03-22CullinPoresky
moe590.0html with style (bsd3, library, web)2015-05-03JinjingWang
HUnit-approx370.0Approximate equality for floating point numbers with HUnit (bsd3, library, testing)2017-10-31RichardEisenberg
async-extra170.0Useful concurrent combinators (library, mit, web)2017-05-28AlexanderThiemann
halves150.0Split or combine data structures to and from halves, quarters, eighths (bsd3, data, library)2018-10-15puffnfresh
control-bool230.0Useful combinators for boolean expressions (bsd3, control, library)2013-12-08FumiakiKinoshita
rose-trie250.0Trees with polymorphic paths to nodes, combining properties of Rose Trees and Tries. (data, gpl, library)2017-03-27RaminHonary
indentation-core220.0Indentation sensitive parsing combinators core library (bsd3, library, parsing)2018-10-06AlekseyKliger
validate-input280.0Input validation combinator library (library, mit, web)2021-02-07AlexanderThiemann
line-bot-sdk441.5Haskell SDK for LINE Messaging API (bsd3, library, network, web)2021-08-25moleike
text-lips90.0Monadic parsing combinator library with attention to locations (bsd3, library, parsing, text)2017-07-29MikhailVorozhtsov
altcomposition170.0Alternative combinators for unorthodox function composition (bsd3, data, library)2016-07-26jcristovao
array-memoize150.0Memoization combinators using arrays for finite sub-domains of functions (bsd3, library, syntax)2014-04-04DominicOrchard
checkers2852.0Check properties on standard classes and data structures. (bsd3, library, testing)2020-06-18ConalElliott, sjakobi
bidirectionalization-combined60.0Prototype Implementation of Combining Syntactic and Semantic Bidirectionalization (ICFP'10) (language, program, public-domain)2010-09-27JoachimBreitner
bytestringparser190.0Combinator parsing with Data.ByteString.Lazy (bsd3, library, parsing, text)2008-01-27BryanOSullivan
plumbers220.0Pointless plumbing combinators (acme, bsd3, library)2018-01-11MichaelSloan
MonadCatchIO-mtl-foreign (deprecated)70.0Polymorphic combinators for working with foreign functions (bsd3, control, deprecated, library)2010-05-29AntoineLatter
servant-ede140.0Combinators for rendering EDE templates in servant web applications (bsd3, library, program, web)2016-09-16AlpMestanogullari
functor-monadic220.0Monad-style combinators for functors. (apache, data, library)2015-05-17jtapolczai, jtapolczai2
redHandlers80.0Monadic HTTP request handlers combinators to build a standalone web apps. (library, web)2009-05-15SergioUrinovsky
Zwaluw60.0Combinators for bidirectional URL routing (bsd3, library, text)2010-11-07MartijnVanSteenbergen
caching (deprecated)80.0Cache combinators. (bsd3, data, deprecated, library)2020-09-05davean
monad-lgbt150.0Monad transformers for combining local and global state. (bsd2, control, library)2016-07-23MichalGajda
monad-memo2802.0Memoization monad transformer (bsd3, control, library, monad)2020-09-21EduardSergeev
function-combine130.0Combining functions (bsd3, control, library)2011-09-23IainAlexander
glue-core762.0Make better services and clients. (bsd3, library, network)2019-03-17seanparsons
quiver-bytestring130.0Quiver combinators for bytestring streaming (bsd3, control, library)2015-09-13patrykz
rediscaching-haxl100.0Combine redis caching and haxl. (bsd3, cache, database, library)2020-09-02Lupino
interleave100.0Combinators for supporting interleaving of different behaviours (bsd3, control, library)2011-01-07NeilBrown
servant-auth-client1780.0servant-client/servant-auth compatibility (authentication, bsd3, library, servant, web)2020-10-06AlpMestanogullari, DavidJohnson, phadej, MatthiasFischmann, jkarni, mchaver, domenkozar, maksbotan, arianvp
versioning-servant140.0Servant combinators for the versioning library. (apache, data, library)2018-11-08lortabac
xhtml-combinators230.0Fast and easy to use XHTML combinators. (bsd3, library, text, web)2011-06-07AlasdairArmstrong
lrucaching-haxl90.0Combine lrucaching and haxl. (bsd3, concurrency, data, library, lrucache)2020-09-02Lupino
graph-rewriting-cl (deprecated in favor of graph-rewriting-trs)100.0Interactive graph rewriting system implementing various well-known combinators (application, bsd3, deprecated, graphs, program)2011-02-07JanRochel
treersec40.0Structure Editing Combinators (bsd2, gui, library)2015-11-13JasonPriestley
MonadCatchIO-transformers-foreign (deprecated)40.0Polymorphic combinators for working with foreign functions (bsd3, control, deprecated, library)2010-05-29AntoineLatter
COrdering120.0An algebraic data type similar to Prelude Ordering. (bsd3, data, library)2008-07-23AdrianHey
indentation-parsec210.0Indentation sensitive parsing combinators for Parsec (bsd3, library, parsing)2018-10-06AlekseyKliger
ADPfusion1160.0Efficient, high-level dynamic programming. (algorithms, bioinformatics, bsd3, data-structures, formal-languages, library)2019-10-01ChristianHoener
lambdacube-bullet (deprecated)80.0Example for combining LambdaCube and Bullet (bsd3, deprecated, graphics, library, physics)2011-06-23CsabaHruska
authoring400.0A library for writing papers (bsd3, library, text)2014-07-07TakayukiMuranushi
text-manipulate2820.0Case conversion, word boundary manipulation, and textual subjugation. (data, library, mpl, text)2020-11-28BrendanHay
kure-your-boilerplate100.0Generator for Boilerplate KURE Combinators (bsd3, language, library)2009-01-27AndyGill
irc350.0A small library for parsing IRC messages. (bsd3, data, library, network)2014-12-16TrevorElliott
sec50.0Semantic Editor Combinators. (bsd3, combinators, data, library)2010-03-30SteffenSiering
deepseq-generics2450.0GHC.Generics-based Control.DeepSeq.rnf implementation (bsd3, control, library)2016-01-03HerbertValerioRiedel
type-combinators-quote50.0Quasiquoters for the 'type-combinators' package. (bsd3, data, library)2016-01-26KyleCarter
lens-action2020.0Monadic Getters and Folds (bsd3, data, generics, lenses, library)2021-11-16EdwardKmett, EricMertens, ryanglscott
dph-lifted-copy210.0Data Parallel Haskell lifted array combinators. (deprecated version) (bsd3, data-structures, library)2012-10-25BenLippmeier
servant-auth-swagger750.0servant-swagger/servant-auth compatibility (authentication, bsd3, library, servant, web)2020-10-06AlpMestanogullari, DavidJohnson, phadej, MatthiasFischmann, jkarni, mchaver, domenkozar, maksbotan, arianvp
quiver-cell180.0Quiver combinators for cellular data processing (bsd3, control, library)2015-08-31patrykz
parsec-utils80.0Utility functions and combinators for Text.Parsec (bsd3, library, parsing)2012-11-06RemcoNiemeijer
binary-generic-combinators120.0Combinators and utilities to make Generic-based deriving of Binary easier and more expressive (bsd3, data, library, parsing)2021-07-190xd34df00d
proof-combinators90.0Proof Combinators used in Liquid Haskell for Theorem Proving (library, mit, theorem-proving)2018-03-28nikivazou
Annotations450.0Constructing, analyzing and destructing annotated trees (bsd3, generics, library)2016-12-05MartijnVanSteenbergen
HCodecs1420.0A library to read, write and manipulate MIDI, WAVE, and SoundFont2 files. (bsd3, codec, library)2020-02-21GeorgeGiorgidze, DonyaQuick, Mokosha
reproject90.0Define and combine "materialized" projections (bsd3, library, web)2017-06-16AlexanderThiemann
ivor (deprecated in favor of idris)250.0Theorem proving library based on dependent type theory (bsd3, dependent-types, deprecated, library, theorem-provers)2011-06-16EdwinBrady, GwernBranwen
strictly90.0Combinators for strictifying functions (bsd3, control, library)2013-08-14DanBurton
servant-zeppelin-server90.0Server library for servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
syntax290.0Reversible parsing and pretty-printing. (data, library, mit)2014-12-12pawel834
numbering70.0Combinators for creating bijections from some type to the natural numbers. (bsd3, data, library)2012-03-10DanielSchuessler
data-emoticons140.0Combinator emoticons: data-aviary in the flavor of emoticons (bsd3, combinators, library)2017-04-23lbq
f-algebra-gen170.0Generate a special f-algebra combinator from any data type. (data, library, mit)2019-07-19bolt12
derp-lib110.0combinators based on parsing with derivatives (derp) package (bsd3, library, text)2011-11-11KiYungAhn
symantic-document80.0Symantics combinators for generating documents. (agpl, gpl, library, text)2021-08-31julm
allocated-processor160.0Functional combinators for monadic actions that require allocation and de-allocation (bsd3, control, library)2010-05-23NoamLewis
treefold130.0Provides folds which try to combine elements in a balanced way. (data, library, mit)2017-10-04oisdk
quiver-csv130.0Quiver combinators for cellular CSV data processing (bsd3, control, library)2015-08-04patrykz
servant-zeppelin240.0Types and definitions of servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
type-combinators-singletons80.0Interop between /type-combinators/ and /singletons/. (bsd3, data, library)2018-01-21jle
derp100.0Derivative Parsing (bsd3, library, parsing)2012-03-28DavidDarais
coercible-subtypes170.0Coercible but only in one direction (bsd3, data, library)2021-09-13viercc
couchdb-enumerator530.0Couch DB client library using http-enumerator and aeson (bsd3, database, library, web)2012-03-13JohnLenz
gitlib1782.0API library for working with Git repositories (ffi, library, mit)2021-03-21JohnWiegley
xml-enumerator (deprecated in favor of xml-conduit)1170.0Pure-Haskell utilities for dealing with XML with the enumerator package. (deprecated) (bsd3, deprecated, enumerator, library, xml)2012-01-02MichaelSnoyman
binary-search1280.0Binary and exponential searches (algorithms, bsd3, library)2021-02-22RossPaterson, TakayukiMuranushi, Jappie
termination-combinators80.0Termination combinators for forcing non-terminating algorithms to terminate (bsd3, language, library)2011-09-19MaxBolingbroke
servant-streaming80.0Servant combinators for the 'streaming' package (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
data-accessor5410.0Utilities for accessing and manipulating fields of records (bsd3, data, library)2019-05-23HenningThielemann, LukePalmer
repa2362.0High performance, regular, shape polymorphic parallel arrays. (bsd3, data-structures, library)2018-10-03BasVanDijk, BenLippmeier, PepeIborra, TrevorMcDonell, vmchale
unbound750.0Generic support for programming with names and binders (bsd3, compilers-interpreters, generics, language, library)2018-10-15BrentYorgey, sweirich
regex-tdfa-utf890.0This combines regex-tdfa with utf8-string to allow searching over UTF8 encoded lazy bytestrings. (bsd3, library, text)2009-03-22ChrisKuklewicz
type-level-natural-number-induction100.0High-level combinators for performing inductive operations. (bsd3, data, library, type-system)2012-07-23GregoryCrosswhite
pipes-cellular90.0Pipes-based combinators for cellular data processing (bsd3, control, library, pipes)2015-07-07patrykz
hoist-error350.0Some convenience facilities for hoisting errors into a monad (control, library, mit)2018-06-15JonSterling, schalmers, qfpl
hath272.0Hath manipulates network blocks in CIDR notation. (agpl, program, utils)2019-03-04MichaelOrlitzky
comfort-array1272.0Arrays where the index type is a function of the shape type (bsd3, data-structures, library)2021-08-07HenningThielemann
TrieMap1380.0Automatic type inference of generalized tries with Template Haskell. (algorithms, bsd3, library)2013-04-18LouisWasserman
control-monad-exception700.0Explicitly typed, checked exceptions with stack traces (control, failure, library, monads)2020-07-06PepeIborra
ess90.0The type-level S combinator in Haskell. (data, library, mit)2015-04-25MichaelOChurch
parsec-numeric60.0Parsec combinators for parsing Haskell numeric types. (library, parsing)2017-01-07andrewrademacher
servant-zeppelin-client80.0Client library for servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
valid (deprecated)90.0Type isomorphic to `Either` with `Applicative` instance which combines errors (bsd3, deprecated, library, unclassified)2019-08-22
plex100.0run a subprocess, combining stdout and stderr (library, mit, system)2018-04-04phlummox
mulang190.0An intermediate language designed to perform advanced code analysis (language, library, program)2019-01-11flbulgarelli
concatenative290.0A library for postfix control flow. (bsd3, control, library)2010-07-02SamAnklesaria
DSH1310.0Database Supported Haskell (bsd3, database, library, program)2015-06-03GeorgeGiorgidze, JeroenWeijers, AlexUlrich, AlexUlrich2
lens-process672.0Optics for system processes (bsd3, library, system)2021-02-03topos
servant-zeppelin-swagger40.0Swagger instances for servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
fclabels3782.25First class accessor labels implemented as lenses. (bsd3, data, lenses, library)2021-05-27AdamBergmark, ErikHesselink, SebastiaanVisser
verifiable-expressions310.0An intermediate language for Hoare logic style verification. (apache, language, library)2021-06-16DominicOrchard, mdanish, madgen, raehik
acme-php320.0The flexibility of Haskell and the safety of PHP (acme, bsd3, library)2016-04-20JoeQuinn
MFlow2220.0stateful, RESTful web framework (application-server, bsd3, library, web)2015-09-21AlbertoCorona
waitfree270.0A wrapping library for waitfree computation. (concurrency, library, mit, system)2011-06-07YoichiHirai
graph-rewriting-layout640.0Force-directed node placement intended for incremental graph drawing (bsd3, graphics, graphs, library)2017-05-23JanRochel
grids320.0 (bsd3, data-structures, library)2019-03-10ChrisPenner
islink120.0Check if an HTML element is a link (bsd3, html, library, xml)2014-10-07MariosTitas
unbound-generics902.0Support for programming with names and binders using GHC Generics (bsd3, language, library)2020-05-11AlekseyKliger
quickcheck-property-comb40.0Combinators for Quickcheck Property construction and diagnostics (library, public-domain, testing)2013-12-26jfeltz
symantic-http90.0Symantic combinators for deriving clients or a server from an HTTP API (gpl, library, protocol)2019-04-12julm
servant-streaming-docs80.0Client instances for the 'servant-docs' package. (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
map-reduce-folds300.0foldl wrappers for map-reduce (bsd3, control, library)2021-09-29adamCS
fields110.0First-class record field combinators with infix record field syntax. (bsd3, data, library)2010-08-11JussiKnuuttila
dynamic-pipeline550.0Library Type Safe implementation of Dynamic Pipeline Paradigm (DPP). (bsd3, data, data-flow, library, parallel, pipes, program, streaming, type-safe)2021-08-01jproyo
functional-arrow90.0Combinators that allow for a more functional/monadic style of Arrow programming (bsd3, combinators, library)2010-09-26HenningThielemann
kangaroo160.0Binary parsing with random access. (bsd3, library, parsing)2010-02-23StephenTetley
tardis352.0Bidirectional state monad transformer (bsd3, control, library)2021-02-23DanBurton
invertible-syntax150.0Invertible syntax descriptions for both parsing and pretty printing. (bsd3, library, text)2011-09-21TillmannRendel
records360.0A flexible record system (bsd3, data, library, records)2012-01-15WolfgangJeltsch
haphviz720.0Graphviz code generation with Haskell (library, mit, text)2016-12-02Norfair
dunai840.0Generalised reactive framework supporting classic, arrowized and monadic FRP. (bsd3, frp, library, reactivity)2021-10-22IvanPerez, keera_studios_ci, keera_studios_ci_dunai
servant-util121.25Servant servers utilities. (library, mpl, program, servant, web)2021-07-26martoon, serokell
servant-auth-docs490.0servant-docs/servant-auth compatibility (authentication, bsd3, library, servant, web)2018-06-18AlpMestanogullari, DavidJohnson, phadej, MatthiasFischmann, jkarni, mchaver, domenkozar, maksbotan, arianvp
declarative730.0DIY Markov Chains. (library, math, mit)2021-02-23JaredTobin
rematch250.0A simple api for matchers (control, library, mit)2013-05-19TomCrayford
pipes-async180.0A higher-level interface to using concurrency with pipes (bsd3, control, library)2018-07-23JohnWiegley
microlens-process522.0Micro-optics for the process library (bsd3, library, system)2020-05-30topos
murder210.0MUtually Recursive Definitions Explicitly Represented (development-, library)2013-11-12MarcosViera
fuzzy-parse150.0Tools for processing unstructured text data (library, mit, parsing, text)2020-07-07voidlizard
elerea1672.0A minimalistic FRP library (bsd3, frp, library, reactivity)2016-06-19GergelyPatai
crypto-enigma1382.0An Enigma machine simulator with display. (bsd3, cryptography, education, library, program)2019-10-09Orome
bearriver680.0FRP Yampa replacement implemented with Monadic Stream Functions. (bsd3, frp, library)2021-10-22IvanPerez, keera_studios_ci, keera_studios_ci_dunai
iteratee-mtl (deprecated in favor of iteratee)170.0Iteratee-based I/O (bsd3, data, deprecated, library, system)2010-10-27JohnLato
TV290.0Tangible Values -- composable interfaces (bsd3, interfaces, library)2013-08-14ConalElliott
libffi-dynamic240.0LibFFI interface with dynamic bidirectional type-driven binding generation (foreign, library)2019-05-29JamesCook
compdata1440.0Compositional Data Types (bsd3, generics, library)2021-01-31PatrickBahr
gemstone310.0A simple library of helpers for SDL+GL games. (game, library)2013-02-09CorbinSimpson
arith-encode (deprecated in favor of cantor-pairing, finitary, smallcheck)540.0A practical arithmetic encoding (aka Godel numbering) library. (bsd3, data, deprecated, library, serialization, test, testing)2020-02-09emc2, Bodigrim
first-class-patterns852.0First class patterns and pattern matching, using type families (bsd3, data, library, pattern)2019-10-01BrentYorgey, ReinerPope, shersh, vrom911
libssh2440.0FFI bindings to libssh2 SSH2 client library (http://libssh2.org/) (bsd3, library, network)2021-05-14IlyaPortnov
polysoup630.0Online XML parsing with polyparse and tagsoup (bsd3, library, xml)2020-03-09JakubWaszczuk
brotli-streams280.0IO-Streams interface for Brotli (RFC7932) compression (bsd3, codec, compression, io-streams, library)2019-04-20HerbertValerioRiedel
overhang132.25Hang loose with your lambdas! (combinators, functions, library, mit, utility)2018-02-02jship
pathtype1260.0Type-safe replacement for System.FilePath etc (bsd3, library, system)2020-06-24BenMoseley, HenningThielemann
archiver680.0Archive supplied URLs in WebCite & Internet Archive (bsd3, documentation, library, network, program)2014-01-03GwernBranwen
querystring-pickle410.0Picklers for de/serialising Generic data types to and from query strings (data, library, network, web)2014-06-23BrendanHay
ghci-pretty230.0colored pretty-printing within ghci (development, library, mit)2014-11-13larsk
onama160.0HTML-parsing primitives for Parsec. (bsd3, library, text)2017-02-09williamyaoh
numhask-prelude (deprecated in favor of numhask)590.0A numeric prelude (bsd3, deprecated, library, mathematics)2020-05-20tonyday567
mtl-prelude460.0Reexports of most definitions from "mtl" and "transformers" (library, mit, prelude)2016-05-24NikitaVolkov
wai-predicates910.0WAI request predicates (library, web)2020-10-31ToralfWittner
lens-tell60.0MonadTell-based lens combinators (bsd3, control, library)2021-09-06lightandlight
aivika1692.0A multi-method simulation library (bsd3, library, simulation)2021-03-31DavidSorokin
animate-sdl2220.0sdl2 + animate auxiliary library (bsd3, game, library)2018-05-20jxv
log-effect-syslog110.0Syslog functions for log-effect (bsd3, control, effect, library, logging, syslog)2019-03-02sickmind
eventloop920.0A 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
hsnoise180.0A coherent 3d noise library. (bsd3, library, noise)2011-05-05ColinHill
gencheck160.0A testing framework inspired by QuickCheck and SmallCheck (bsd3, library, testing)2012-06-19JacquesCarette
GuiHaskell190.0A graphical REPL and development environment for Haskell (bsd3, development, program)2008-03-06NeilMitchell
brotli342.0Brotli (RFC7932) compression and decompression (codec, compression, gpl, library)2019-04-20HerbertValerioRiedel
testpack (deprecated)480.0Test Utililty Pack for HUnit and QuickCheck (unmaintained) (deprecated, library, testing)2014-10-27JohnGoerzen, PeterSimons
servant-exceptions340.0Extensible exceptions for servant APIs (bsd3, library, web)2020-11-25ch1bo
bf-cata120.0 (development, library)2010-10-16ArieMiddelkoop
hslua-examples70.0Examples of how to combine Haskell and Lua. (foreign, mit, program)2021-10-21tarleb
graphs660.0A simple monadic graph library (algorithms, bsd3, data-structures, graphs, library)2018-02-24EdwardKmett, ryanglscott
hurdle180.0Extract function names from Windows DLLs. (bsd3, program, system)2010-02-24StephenTetley
pipes-extra190.0Various basic utilities for Pipes. (bsd3, control, enumerator, library)2012-06-09PaoloCapriotti
non-empty1320.0List-like structures with static restrictions on the number of elements (bsd3, data, library)2021-03-14HenningThielemann
threepenny-editors1190.0Composable algebraic editors (bsd3, library, web)2018-10-07PepeIborra
netwire-vinylglfw-examples40.0Netwire/GLFW/VinylGL input handling demo (game, mit, program)2016-10-22RandKleisli
local-search250.0Generalised local search within Haskell, for applications in combinatorial optimisation. (control, library, local-search, optimisation)2013-07-18RichardSenington
xml-picklers380.0XML picklers based on xml-types, ported from hexpat-pickle (bsd3, library, xml)2015-04-01PhilippBalzarek
compilation170.0Haskell functionality for quickly assembling simple compilers. (compilers-interpreters, gpl, language, library)2013-08-20AndreiLapets
levmar490.0An implementation of the Levenberg-Marquardt algorithm (bsd3, library, math, numerical)2018-05-07BasVanDijk, RoelVanDijk
dumb-cas390.0A computer “algebra” system that knows nothing about algebra, at the core. (gpl, library, math)2021-01-11leftaroundabout
pointless-rewrite150.0Pointless Rewrite library (bsd3, generics, library)2012-01-26HugoPacheco
named-sop250.0Dependently-typed sums and products, tagged by field name (data, library, mit)2020-02-20sjsch
friday782.0A functional image processing library for Haskell. (graphics, lgpl, library)2016-12-17RaphaelJavaux, ThomasDuBuisson
morphisms120.0It's all about functions (control, data, library, mit)2019-01-04iokasimovmt
streamly-lz450.0Streamly combinators for LZ4 compression (apache, codec, compression, library, streamly)2021-09-21harendra
yaya440.0Total recursion schemes. (agpl, library, recursion)2020-06-01sellout
wraxml280.0Lazy wrapper to HaXML, HXT, TagSoup via custom XML tree structure (gpl, library, xml)2021-03-16HenningThielemann
nest80.0 (bsd3, library, unclassified)2018-05-03MarkHibberd, lambda_foo
uvector330.0Fast unboxed arrays with a flexible interface (bsd3, data, library)2010-02-15BryanOSullivan, DonaldStewart
grafana150.0API for creating grafana dashboards represented as json (bsd3, graphics, library, tooling)2019-09-12chessai
gloss-game210.0Gloss wrapper that simplifies writing games (bsd3, game, graphics, library)2014-08-03ManuelChakravarty
wai-request-spec460.0Declarative request parsing (bsd3, library, network, wai)2016-12-30alleledev
sdl2-compositor300.0image compositing with sdl2 - declarative style (gpl, graphics, library)2017-06-12seppeljordan
iterIO100.0Iteratee-based IO with pipe operators (bsd3, data, enumerator, library, system)2012-04-19AmitLevy, DavidMazieres, DanielBGiffin
smash-lens130.0Optics for the `smash` library (bsd3, data, library)2020-09-17topos
obdd290.0Ordered Reduced Binary Decision Diagrams (library, logic)2018-05-20JohannesWaldmann
hexpat-pickle390.0XML picklers based on hexpat, source-code-similar to those of the HXT package (bsd3, library, xml)2012-04-27StephenBlackheath
funcons-values290.0Library providing values and operations on values in a fixed universe. (compilers-interpreters, library, mit)2021-06-26ltvanbinsbergen
hs-pkg-config180.0Create pkg-config configuration files (bsd3, data, development, library)2014-12-24PeterTrsko
Shpadoinkle-router280.0A single page application rounter for Shpadoinkle based on Servant. (bsd3, library, web)2021-06-02fresheyeball
rmonad160.0Restricted monad library (bsd3, control, library)2013-12-23GaneshSittampalam
stable-memo410.0Memoization based on argument identity (data, library, mit)2015-07-12JakeMcArthur
mapalgebra280.0Efficient, polymorphic Map Algebra. (bsd3, geography, library)2020-02-02fosskers
broadcast-chan630.0Closable, fair, single-wakeup channel type that avoids 0 reader space leaks. (bsd3, library, system)2020-05-29MerijnVerstraaten
hashflare90.0A library for working with HashFlare.io contracts and hashrates (bsd2, data, library)2017-01-20nbrk
Tainted240.0Tainted type, and associated operations (bsd3, control, data, library, monads, trans)2015-05-27RossMeikleham
time-patterns320.0Patterns for recurring events (bsd3, data, library, time)2018-07-02jfmueller
pretty-compact400.0Pretty-printing library (library, text)2017-08-19JeanPhilippeBernardy
argon2250.0Memory-hard password hash and proof-of-work function (bsd3, cryptography, library)2018-04-07HerbertValerioRiedel, JoeyHess, OliverCharles
constraint-manip160.0Some conviencience type functions for manipulating constraints. (control, library, mit)2017-10-16clinton
keera-hails-reactive-wx90.0Haskell on Rails - Reactive Fields for WX widgets (bsd3, development, library)2020-08-13IvanPerez, keera_studios_ci
tower (deprecated in favor of numhask)80.0A numeric tower (bsd3, deprecated, library, mathematics)2017-02-21tonyday567
PrimitiveArray-Pretty70.0Pretty-printing for primitive arrays (bsd3, data, library)2017-03-03ChristianHoener
pointless-lenses390.0Pointless Lenses library (bsd3, generics, library)2012-01-26HugoPacheco
TeX-my-math400.0Render general Haskell math to LaTeX. Or: math typesetting with high signal-to-noise–ratio. (gpl, library, math, program)2021-05-18leftaroundabout
smash-optics90.0Optics for the `smash` library using `optics-core` (bsd3, data, library)2020-09-17topos
Yampa-core110.0Library for programming hybrid systems. (bsd3, frp, library, reactivity)2015-06-25NikolayOrlyuk
yuiGrid90.0Grids defined by layout hints and implemented on top of Yahoo grids. (library, web)2009-05-15SergioUrinovsky
harpy480.0Runtime code generation for x86 machine code (bsd3, code-generation, library)2015-05-26DirkKleeblatt, MartinGrabmueller
interval60.0Intervals with adherences. (data-structures, gpl, library)2016-08-21julm
yet-another-logger780.0Yet Another Logger (apache, library, logging, program, system)2020-04-07larsk, fosskers
exists70.0Existential datatypes holding evidence of constraints (bsd3, constraints, library)2012-05-15GaborLehel
PortFusion500.0high-performance distributed reverse / forward proxy & tunneling for TCP (gpl, network, program, system)2012-08-19CetinSert
fused-effects-optics160.0Bridge between the optics and fused-effects ecosystems. (bsd3, control, library)2021-04-07patrick_thomson
bindings-levmar620.0Low level bindings to the C levmar (Levenberg-Marquardt) library (ffi, library, numerical)2018-05-07BasVanDijk, RoelVanDijk
chunks110.0Simple template library with static safety (library, text)2007-04-18MatthewSackman
birds-of-paradise320.0Birds of Paradise (bsd3, language, library)2021-06-18KatsutoshiItoh
acme-zalgo242.25A somewhat flexible Zalgo̐ te̳͜x̥̖̉̓͞t̍̌̔ ̀̃t̴̢̞̜͓̝r̶̬̆̂̒͟á̧̡͎͔̯̰̕n̹̾̓ͬͦ̍͘ṡ̢͓͉ͮ͆l̠̖̹̗̳̖̽̌ͤ͞a͚̭͙̹̲ͭͩt͈͐o̢̭͇͍̟͐ͬ̾ͪ͜r͇.̸̅ͭ̐̀̊ͨ͛ (acme, library, mit)2018-02-25AntonEkblad
bff190.0Bidirectionalization for Free! (POPL'09) (data, library, public-domain)2011-03-22DanielSeidel, JanisVoigtlaender, JoachimBreitner
sneathlane-haste130.0A compositional web UI library, which draws to a Canvas element (bsd2, gui, library)2015-11-13JasonPriestley
minilens322.0A minimalistic lens library, providing only the simplest, most basic lens functionality. (data, gpl, lens, library)2016-05-31RaminHonary
urldisp-happstack80.0Simple, declarative, expressive URL routing -- on happstack. (bsd3, language, library)2009-07-25SterlingClover
dzen-utils170.0Utilities for creating inputs for dzen. (library, system)2012-05-31FelipeLessa, javran, ianclement
process-iterio80.0IterIO Process Library (bsd3, library, system)2012-11-05GregFitzgerald
Paraiso700.0a code generator for partial differential equations solvers. (bsd3, language, library)2015-12-03TakayukiMuranushi
terrahs300.0A Haskell GIS Programming Environment (gis-programs, library)2013-07-07SergioCosta
lio832.0Labeled IO Information Flow Control Library (library, mit, security)2020-09-23AmitLevy, DavidMazieres, DeianStefan
pipes-core (deprecated in favor of pipes)150.0Compositional pipelines (bsd3, control, deprecated, enumerator, library)2012-04-09PaoloCapriotti
sessiontypes-distributed100.0Session types distributed (control, gpl, library)2018-01-13ferdinandvw
mealy180.0Mealy machines for processing time-series and ordered data. (bsd3, folding, library, project)2021-09-07tonyday567
yampa-gloss140.0A GLOSS backend for Yampa (graphics, library, mit)2019-02-24IvanPerez
category-printf180.0Highbrow approach to type-safe printf format specifications. (bsd3, library, text)2016-05-08CaleGibbard
mtlx70.0Monad transformer library with type indexes, providing 'free' copies. (bsd3, control, library)2012-10-15MarkSnyder
gtk2hs-rpn330.0Adds a module to gtk2hs allowing layouts to be defined using reverse polish notation. (gui, library)2011-09-23MauricioAntunes
ad-delcont132.25Reverse-mode automatic differentiation with delimited continuations (bsd3, library, machine-learning, math, numeric, optimisation, optimization)2021-07-20ocramz
adaptive-tuple190.0Self-optimizing tuple types (bsd3, data, library)2010-03-16JohnLato
count110.0Bijective mappings between values and possibly infinite prefixes of [0..] (bsd3, data, library)2014-06-10Maxdamantus
data-filter100.0Utilities for filtering (bsd2, data, library)2018-05-17boonami
dynamic-pp130.0A pretty-print library that employs a dynamic programming algorithm for optimal rendering. (bsd3, library, text)2015-07-19emc2
keera-hails-reactivevalues81.5Haskell on Rails - Reactive Values (bsd3, development, library)2020-08-13IvanPerez, keera_studios_ci
memo-ptr80.0Pointer equality memoization (control, library, mit)2015-05-31edofic
yesod-test-json100.0Utility functions for testing JSON web services written in Yesod (bsd3, library, web)2012-08-17SamAnklesaria
pointedalternative80.0Alternative done right (bsd3, library)2016-08-25Gurkenglas
dynamic-object280.0Object-oriented programming with duck typing and singleton classes. (bsd3, data, library)2013-01-15TakayukiMuranushi
servant-docs-simple320.0Generate endpoints overview for Servant API (library, mit, utility)2021-09-21HolmuskTechTeam
master-plan200.0The project management tool for hackers (library, mit, program, tools)2017-08-18rodrigosetti
AERN-Net (deprecated in favor of aern2-mp, aern2-real)210.0Compositional lazy dataflow networks for exact real number computation (bsd3, deprecated, distributed-computing, library, math)2009-07-29MichalKonecny
transf180.0Text transformer and interpreter. (bsd3, compilers-interpreters, library, program, text)2014-08-19HansHoglund
proplang100.0A library for functional GUI development (bsd3, library, user-interfaces)2007-08-15NeilMitchell
loops250.0Fast imperative-style loops (bsd3, control, library)2014-06-13ThomasTuegel
curl-aeson190.0Communicate with HTTP service using JSON (bsd3, json, library, network, web)2014-08-24JoelLehtonen
set-monad180.0Set monad (bsd3, data, library, monad)2018-10-11GeorgeGiorgidze
wumpus-core1320.0Pure Haskell PostScript and SVG generation. (bsd3, graphics, library)2012-05-01StephenTetley
quiver-interleave150.0Interleave values from multiple Quivers (control, library, mit)2016-11-26IvanMiljenovic
servant-streaming-client50.0Client instances for the 'servant-streaming' package. (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
servant-streaming-server80.0Server instances for the 'servant-streaming' package. (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
group-theory322.25The theory of groups (algebra, bsd3, groups, library, math, permutations)2021-05-18ReedMullanix, topos
metaheuristics90.0Generalised local search within Haskell, for applications in combinatorial optimisation. (control, library, local-search, optimisation)2019-10-04richardjamessenington
servant-event-stream120.0Servant support for Server-Sent events (bsd3, library, servant, web)2021-04-21bflyblue
zoom-cache990.0A streamable, seekable, zoomable cache file format (bsd3, development, library, program)2012-12-07ConradParker
graph-generators302.0Functions for generating structured or random FGL graphs (algorithms, apache, graphs, library, program)2018-06-08ulikoehler
dpor (deprecated in favor of dejafu)160.0A generic implementation of dynamic partial-order reduction (DPOR) for testing arbitrary models of concurrency. (deprecated, library, mit, testing)2016-06-06barrucadu
unbound-kind-generics50.0Support for programming with names and binders using kind-generics (bsd3, language, library)2019-09-10AlejandroSerrano
type-eq480.0Type equality evidence you can carry around (bsd3, library, type-system)2015-02-10AdamBergmark, GaborLehel
aivika-gpss370.0GPSS-like DSL for Aivika (bsd3, library, simulation)2021-03-31DavidSorokin
kinds270.0Emulation of subkinds and subkind polymorphism (bsd3, library, type-system)2012-01-15WolfgangJeltsch
chakra740.0A REST Web Api server template for building (micro)services. (library, mit, program, web)2021-11-07cackharot
funcons-tools520.0A modular interpreter for executing funcons (compilers-interpreters, library, mit, program)2021-06-26ltvanbinsbergen
binary-derive160.0Automatic deriving of Binary using GHC.Generics (data, gpl, library)2011-11-05JaredHance
keera-hails-mvc-environment-gtk110.0Haskell on Gtk rails - Gtk-based global environment for MVC applications (bsd3, development, library)2020-08-13IvanPerez, keera_studios_ci
probable212.0Easy and reasonably efficient probabilistic programming and random generation (bsd3, library, math, statistics)2018-02-11AlpMestanogullari
symantic-xml60.0Library for reading, validating and writing XML. (gpl, library, text, xml)2020-08-17julm
semialign-extras80.0Extra functions for working with Semialigns (bsd3, data, library)2019-11-15qfpl, jack
goal-core140.0Common, non-geometric tools for use with Goal (bsd3, library, math, program)2021-08-31alex404
monad-task90.0A monad transformer that turns event processing into co-routine programming. (bsd3, control, library)2018-01-04PaulLiu
brotli-conduit110.0Conduit interface for Brotli (RFC7932) compression. (bsd3, codec, compression, conduit, library)2019-04-20HerbertValerioRiedel
dunai-core60.0Generalised reactive framework supporting classic, arrowized and monadic FRP. (Core library fork.) (bsd3, frp, library, reactivity)2018-10-21turion
app-lens190.0applicative (functional) bidirectional programming beyond composition chains (bsd3, data, lenses, library)2016-09-25kztk
streaming-brotli90.0Streaming interface for Brotli (RFC7932) compression (bsd3, codec, compression, library, streaming)2019-04-22HerbertValerioRiedel
vitrea90.0Profunctor optics via the profunctor representation theorem. (gpl, lenses, library)2020-03-30mroman42
Nutri60.0A little library to calculate nutrition values of food items. (library, public-domain, utils)2013-11-27frosch03
error-message70.0Composable error messages. (bsd3, development, error-handling, library)2010-11-15GregoryCrosswhite
wumpus-basic920.0Basic objects and system code built on Wumpus-Core. (bsd3, graphics, library)2012-05-01StephenTetley
Prelude270.0A Prelude module replacement (bsd3, library, prelude)2018-08-29HerbertValerioRiedel
typedflow90.0Typed frontend to TensorFlow and higher-order deep learning (deep-learning, lgpl, library)2017-10-26JeanPhilippeBernardy
HPlot110.0A minimal monadic PLplot interface for Haskell (bsd3, foreign, graphics, library, program)2009-08-04YakovZaytsev
type-functions310.0Emulation of type-level functions (bsd3, library, type-system)2016-07-21WolfgangJeltsch
unsatisfiable90.0Unsatisfiable type class (bsd3, library, plugin)2021-05-28phadej
stt100.0A monad transformer version of the ST monad (control, library, mit)2016-11-06mckeankylej
reactive-banana-bunch90.0Extend reactive-banana to multiple events per time point (bsd3, frp, library)2018-09-01HenningThielemann
wahsp60.0A haskell binding of the Web Audio API ala blank-canvas (bsd3, library, web)2016-09-18nshaheed
seclib262.0A simple library for static information-flow security in Haskell (bsd3, library, security)2021-01-25AlejandroRusso
references690.0Selectors for reading and updating data. (bsd3, control, library)2017-11-28lazac
web-page70.0Monoidally construct web pages (bsd3, library, web)2014-09-28ErtugrulSoeylemez, esz
encode-string100.0Safe string conversion and encoding (data, library, mit, string, text)2017-03-15minad
reflex-animation280.0Continuous animations support for reflex (bsd3, frp, library)2015-10-20saulzar
network-uri-flag90.0Pseudo-package encapsulating flag(network-uri) Cabal boilerplate (bsd3, library, network)2016-08-27HerbertValerioRiedel
rpm50.0Cozy little project to question unruly rpm packages. (bsd3, library, system)2010-11-01EricStolten
MC-Fold-DP180.0Folding algorithm based on nucleotide cyclic motifs. (bioinformatics, gpl, library, program)2012-11-12ChristianHoener
semi-iso290.0Weakened partial isomorphisms, reversible computations. (control, data, library, mit)2014-12-12pawel834
function-instances-algebra60.0Instances of the Algebra.* classes for functions (bsd3, library, math)2012-03-25TobiasBrandt
pipes-brotli80.0Brotli (RFC7932) compressors and decompressors for the Pipes package (bsd3, codec, compression, library, pipes)2019-04-20HerbertValerioRiedel
tree-traversals130.0Functions and newtype wrappers for traversing Trees (data, library)2019-12-11NoahEasterly
unique-logic210.0Solve simple simultaneous equations (bsd3, library, logic-programming)2018-02-17HenningThielemann
SNet70.0Declarative coördination language for streaming networks. (language, lgpl, library)2012-09-24MerijnVerstraaten
template-hsml150.0Haskell's Simple Markup Language (bsd3, library, template, templating, web)2012-08-30PetrPilar
json-tokens120.0Tokenize JSON (bsd3, data, library)2019-09-30andrewthad
unique-logic-tf440.0Solve simple simultaneous equations (bsd3, library, logic-programming)2019-01-22HenningThielemann
servant-gdp50.0Use Servant and GDP together to create expressive web API types (bsd3, lib, library)2021-06-16mtonnberg
narc40.0Query SQL databases using Nested Relational Calculus embedded in Haskell. (bsd3, database, library)2011-08-09EzraCooper
workflow-extra90.0Utilities (e.g. Googling the clipboard contents) for the `workflow` pacakge (bsd3, library, program, todo)2017-05-04sboo
perdure280.0Robust persistence for acyclic immutable data (database, library, program)2012-09-26PatrickPremont
open-pandoc (deprecated in favor of pandoc)130.0Conversion between markup formats (deprecated, text)2010-04-14PeterSimons
hout100.0Non-interactive proof assistant monad for first-order logic. (bsd3, library, logic, type-system)2020-04-11ivanbakel
tasty-integrate90.0automated integration of QuickCheck properties into tasty suites (bsd3, program, testing)2014-02-02jfeltz
network-packet-linux110.0Types for working with Linux packet sockets (bsd3, library, network)2021-03-20rolsdorph
twidge420.0Unix Command-Line Twitter and Identica Client (network, program)2014-06-21JohnGoerzen
linear-smc60.0Build SMC morphisms using linear types (control, lgpl, library)2021-06-30JeanPhilippeBernardy
nvim-hs-ghcid200.0Neovim plugin that runs ghcid to update the quickfix list (apache, editor, library, program)2019-05-27saep
fpnla100.0A library for NLA operations (bsd3, library, math)2014-02-04mblanco
yall90.0Lenses with a southern twang (bsd3, data, library)2012-09-21BrandonSimmons
rados-haskell202.0librados haskell bindings (bsd3, library, system)2014-08-22ChristianMarie
equeue60.0Application level triggered, and edge triggered event multiqueues. (bsd3, concurrency, library)2019-01-01KevinCotrone, davean
data-dispersal140.0Space-efficient and privacy-preserving data dispersal algorithms. (cryptography, data, lgpl, library)2014-10-05PeterRobinson
schedule140.0Pure deterministic scheduled computations (control, delay, gpl, library, schedule, time, timeout)2020-04-03infinity0
primitive-simd92.0SIMD data types and functions (bsd3, data, library)2016-02-01JonasScholl
porcupine-core92.0Express portable, composable and reusable data tasks and pipelines (arrows, combinators, control, data, json, library, mit, numerical, pipes, program, streaming)2019-10-09YvesPares
type-digits240.0Arbitrary-base type-level digits (bsd3, library, type-system)2013-07-31NicolasFrisby
freer-indexed100.0Freer indexed monad for type-level resource-aware effectual operations. (bsd3, effects, library)2020-07-07epoberezkin
static140.0Type-safe and interoperable static values and closures (closure, control, gpl, library, static)2020-05-29infinity0

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