Package search

Name
DLs
Rating
Description
Tags
Last U/L
Maintainer
JSON-Combinator (deprecated in favor of lens)300.0A combinator library on top of a generalised JSON type (bsd3, combinators, deprecated, json, library)2011-04-03TonyMorris
combinator-interactive70.0SKI Combinator interpreter (bsd3, language, library, program)2013-09-07FumiakiKinoshita
data-combinator-gen120.0Generate a special combinator from any data type. (data, library, mit)2019-05-26bolt12
guess-combinator70.0Generate simple combinators given their type (bsd3, development, library)2012-05-16EtienneLaurin
JSON-Combinator-Examples (deprecated in favor of lens)50.0Example uses of the JSON-Combinator library. (bsd3, combinators, deprecated, library)2010-12-20TonyMorris
parser-combinators8980.0Lightweight package providing commonly useful parser combinators (bsd3, library, parsing)2019-11-08HerbertValerioRiedel, mrkkrp
fast-combinatorics212.0Fast combinatorics. (bsd3, library, numerics)2018-01-02
parsec11762.75Monadic parser combinators (bsd3, library, parsing)2019-08-10AntoineLatter, HerbertValerioRiedel
megaparsec15112.75Monadic parser combinators (bsd2, library, parsing)2020-09-04HerbertValerioRiedel, TikhonJelvis, mrkkrp
HaskellForMaths760.0Combinatorics, group theory, commutative algebra, non-commutative algebra (bsd3, library, math)2018-12-15DavidAmos
polyparse6760.0A variety of alternative parser combinator libraries. (library, parsing, text)2019-08-22MalcolmWallace, phadej
grammatical-parsers310.0parsers that combine into grammars (bsd3, library, parsing, program, text)2019-10-20MarioBlazevic
uu-parsinglib610.0Fast, 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
exact-combinatorics180.0Efficient exact computation of combinatoric functions. (bsd3, library, math, statistics)2019-04-13WrenThornton, WrenRomano
parsec3260.0Monadic parser combinators (bsd3, library, parsing)2015-02-16ChristianMaeder
trifecta3112.25A modern parser combinator library with convenient diagnostics (bsd3, diagnostics, library, logging, parsing, pretty-printer, text)2019-09-07EdwardKmett, EricMertens, quchen, ryanglscott
inchworm200.0Simple parser combinators for lexical analysis. (library, mit, parsing)2019-01-02BenLippmeier
IndentParser (deprecated)70.0Combinators for parsing indentation based syntatic structures (deprecated, library, parsing)2007-10-19PiyushKurur
substring-parser50.0Match / replace substrings with a parser combinators. (apache, library, parsing, text)2018-07-22igrep
gll460.0GLL parser with simple combinator interface (bsd3, compilers, library)2020-05-03ltvanbinsbergen
parsec1480.0Portable monadic parser combinators (bsd3, library, parsing)2020-04-30ChristianMaeder
parsix210.0Parser combinators with slicing, error recovery, and syntax highlighting (bsd3, library, parsing)2020-03-01OlleFredriksson
parcom-lib230.0A simple parser-combinator library, a bit like Parsec but without the frills (bsd3, library, text)2015-07-08TobiasDammers
definitive-parser60.0A parser combinator library for the Definitive framework (library, parsers)2014-11-11MarcCoiffier
indents650.0indentation sensitive parser-combinators for parsec (bsd3, library, parsing, text)2019-10-02JasperVanDerJeugt, SamAnklesaria
attoparsec19212.75Fast combinator parsing for bytestrings and text (bsd3, library, parsing, text)2020-03-27BasVanDijk, BenGamari, BryanOSullivan
yoda570.0Parser combinators for young padawans (bsd3, library, text)2018-11-05NicolasWu
parsers7142.25Parsing combinators (bsd3, library, parsing, text)2019-05-02EdwardKmett, EricMertens, ryanglscott
combinatorics (deprecated in favor of exact-combinatorics)20.0Efficient computation of common combinatoric functions. (bsd3, deprecated, library, math, statistics)2012-01-29WrenThornton
parsimony (deprecated)100.0Monadic parser combinators derived from Parsec (bsd3, deprecated, library, parsing)2012-02-06IavorDiatchki
permute (deprecated in favor of parser-combinators)20.0Generalised permutation parser combinator (bsd3, deprecated, library, parsing)2011-09-22TroelsHenriksen
parco (deprecated in favor of parser-combinators)40.0Generalised parser combinators (bsd3, deprecated, library, parsing)2013-11-27TroelsHenriksen
parsec260.0Monadic parser combinators (bsd3, library, parsing)2015-11-17AntoineLatter
uu-tc70.0Haskell 98 parser combinators for INFOB3TC at Utrecht University (bsd3, library, parsing, text)2015-11-11TrevorMcDonell, joaopizani
ebnf-bff60.0Parser combinators & EBNF, BFFs! (ebnf, library, metalanguage, mit, parsing, program, text)2015-09-20Lokidottir
fungll-combinators30.0GLL parser with simple combinator interface (bsd3, compilers, library)2019-03-29ltvanbinsbergen
uulib672.0Haskell Utrecht Tools Library (bsd3, library, parsing)2019-02-14ArieMiddelkoop, AtzeDijkstra, DoaitseSwierstra, JeroenBransen, PhilippHausmann
fast-arithmetic1432.0Fast functions on integers. (algorithms, ats, bsd3, combinatorics, ffi, library, math, number-theory, numerics)2020-03-03vmchale
applicative-parsec20.0An applicative parser combinator library (gpl, language, library)2015-04-09KarlVoelker
parsec-pratt20.0Pratt Parser combinator for Parsec (library, mit, program, text)2016-08-02jh3141
PArrows60.0Arrow parser combinators similar to Parsec (bsd3, library, parsing)2009-01-24GwernBranwen
xml-enumerator-combinators20.0Parser combinators for xml-enumerator and compatible XML parsers. (bsd3, enumerator, library, xml)2011-04-06AristidBreitkreuz
ponder20.0PEG parser combinator (library, mit, parsing)2014-03-06matt
parco-parsec (deprecated in favor of parser-combinators)20.0Generalised parser combinators - Parsec interface (bsd3, deprecated, library, parsing)2013-11-27TroelsHenriksen
quack60.0Convenience parser combinators for URI query strings (bsd3, library, web)2016-08-30athanclark
cassette40.0A combinator library for simultaneously defining parsers and pretty printers. (bsd3, library, parsing, text)2012-03-19MathieuBoespflug
penntreebank-megaparsec50.0Parser combinators for trees in the Penn Treebank format (bsd3, library, natural-language-processing, parsing)2020-05-14twotrees12
parco-attoparsec (deprecated in favor of parser-combinators)20.0Generalised parser combinators - Attoparsec interface (bsd3, deprecated, library, parsing)2013-11-27TroelsHenriksen
scanner1220.0Fast non-backtracking incremental combinator parsing for bytestrings (bsd3, library, parsing)2019-09-18YurasShumovich
uu-interleaved140.0An interleaving combinator for use with applicative style implementations. (applicative, control, library, mit, parsing, text)2018-08-06DoaitseSwierstra
tagsoup-megaparsec22.0A Tag token parser and Tag specific parsing combinators (bsd3, library, xml)2016-08-03kseo
tagsoup-parsec80.0Tokenizes Tag, so [ Tag ] can be used as parser input. (bsd3, library, xml)2011-11-29JohnnyMorrice, OzgunAtaman
bytestringparser-temporary100.0Combinator parsing with Data.ByteString.Lazy (bsd3, library, parsing, text)2009-09-15JasonDusek
picoparsec132.0Fast combinator parsing for bytestrings and text (bsd3, library, parsing, text)2015-08-13MarioBlazevic
language-pig130.0Pig parser in haskell. (language, library, mit)2013-12-16elisehuard
blaze-html14102.25A blazingly fast HTML combinator library for Haskell (bsd3, library, text)2019-10-02JasperVanDerJeugt, SimonMeier
config-parser330.0Parse config files using parsec and generate parse errors on unhandled keys (library, mit, text)2018-01-21BenHamlin
either6982.0Combinators for working with sums (bsd3, control, library, monads)2019-05-02EdwardKmett, ryanglscott, GeorgeWilson
blaze-markup14920.0A blazingly fast markup combinator library for Haskell (bsd3, library, text)2020-06-30DeepakJois, JasperVanDerJeugt
parsec-parsers (deprecated in favor of parsers)130.0Parsing instances for Parsec (bsd3, deprecated, library, parsing, text)2013-11-05DagOdenhall, EdwardKmett
phaser150.0Incremental multiple pass parser library. (bsd3, library, text)2018-11-20quick_dudley
retry6752.5Retry combinators for monadic actions that may fail (bsd3, control, library)2020-04-24MichaelXavier, OzgunAtaman
incremental-parser840.0Generic parser library capable of providing partial results from partial input. (gpl, library, parsing)2020-07-18MarioBlazevic
ParsecTools40.0Parsec combinators for more complex objects. (gpl, library, parsing)2010-09-22ChristianHoener
split11852.25Combinator library for splitting lists. (bsd3, library, list)2020-02-22BrentYorgey
aeson-combinators1660.0Aeson combinators for dead simple JSON decoding (bsd3, json, library, text, web)2020-10-24MarekFajkus
hspec-expectations7310.0Catchy combinators for HUnit (library, mit, testing)2016-10-16SimonHengel, SoenkeHahn
bytestringreadp40.0A ReadP style parser library for ByteString (bsd3, library, text)2007-12-13GracjanPolak
optparse-applicative18803.0Utilities and combinators for parsing command line options (bsd3, cli, library, options, parsing, system)2020-08-13PaoloCapriotti, huw
parser-combinators-tests100.0Test suite of parser-combinators (bsd3, parsing)2019-11-08mrkkrp
fastparser182.0A fast, but bare bones, bytestring parser combinators library. (bsd3, library, parsing)2020-08-21SimonMarechal
functor-combinators410.0Tools for functor combinator-based program design (bsd3, data, library)2020-08-27jle
formatting25232.25Combinator-based type-safe formatting (like printf() or FORMAT) (bsd3, library, text)2020-10-14ChrisDone, AlexChapman
frisby160.0Linear time composable parser for PEG grammars (bsd3, library, text)2020-03-31BenGamari, ChrisDone
functor-combo390.0Functor combinators with tries & zippers (bsd3, data, library)2015-05-04ConalElliott
composition-prelude2112.0Higher-order function combinators (bsd3, control, data, library)2020-05-28vmchale
kure530.0Combinators for Strategic Programming (bsd3, language, library)2015-09-15AndyGill, NeilSculthorpe
blaze-svg1012.0SVG combinator library (bsd3, graphics, library)2017-03-13BrentYorgey, DeepakJois
permutation330.0A library for permutations and combinations. (bsd3, data-structures, library, math)2015-01-20PatrickPerry, spacekitteh
servant6993.0A family of combinators for defining webservices APIs (bsd3, library, servant, web)2020-07-31AlpMestanogullari, DavidJohnson, SoenkeHahn, ChristianMarie, phadej, MatthiasFischmann, jkarni, arianvp, fisx
parsec-tagsoup30.0Parsec parsers for Tagsoup tag streams (library, public-domain, xml)2011-12-30PepeIborra
describe100.0Combinators for describing binary data structures (bsd3, data, library)2020-02-08riuga
scc210.0Streaming component combinators (combinators, concurrency, control, library, program)2016-06-19MarioBlazevic
sax30.0Monadic streaming XML parser (bsd3, library, sax, text)2018-04-13dredozubov
orgmode-parse630.0A collection of Attoparsec combinators for parsing org-mode flavored documents. (bsd3, data, library)2018-10-31ParnellSpringmeyer
xhtml1370.0An XHTML combinator library (bsd3, library, pretty-printer, web, xml)2018-03-09BenGamari, BjornBringert, ChrisDornan, HerbertValerioRiedel, IanLynagh
parallel-io860.0Combinators for executing IO actions in parallel on a thread pool. (bsd3, concurrency, library)2012-12-24MaxBolingbroke
digit942.0A data-type representing digits 0-9 and other combinations (bsd3, data, library)2019-11-20TonyMorris, qfpl
combinatorial160.0Count, enumerate, rank and unrank combinatorial objects (bsd3, library, math, statistics)2018-08-31HenningThielemann
JsonGrammar310.0Combinators for bidirectional JSON parsing (bsd3, json, language, library)2016-10-07MartijnVanSteenbergen
graph-rewriting-ski370.0Two evalutors of the SKI combinator calculus as interactive graph rewrite systems (application, bsd3, compilers-interpreters, program)2017-05-23JanRochel
argparser330.0Command line parsing framework for console applications (bsd3, console, library)2014-11-27sbergot
servant-server5792.75A family of combinators for defining webservices APIs and serving them (bsd3, library, program, servant, web)2020-07-31AlpMestanogullari, DavidJohnson, SoenkeHahn, ChristianMarie, phadej, MatthiasFischmann, jkarni, arianvp, fisx
data-memocombinators462.0Combinators for building memo tables. (bsd3, data, library)2013-12-14DmitryMalikov, LukePalmer, ThomasDuBuisson
paripari250.0Parser combinators with fast-path and slower fallback for error reporting (library, mit, program, text)2020-06-17minad
html2420.0HTML combinator library (bsd3, library, web)2008-10-11DonaldStewart
data-hash2310.0Combinators for building fast hashing functions. (bsd3, data, library)2015-05-20DanielGorin
xilinx-lava340.0The Lava system for Xilinx FPGA design with layout combinators. (bsd3, hardware, library, program)2014-08-21SatnamSingh
string-combinators130.0Polymorphic functions to build and combine stringlike values (bsd3, data, library)2014-06-13BasVanDijk
composition850.0Combinators for unorthodox function composition (bsd3, data, library)2015-12-31DanBurton
between170.0Function combinator "between" and derived combinators (bsd3, data, library)2016-01-09PeterTrsko
hspec-expectations-pretty-diff260.0Catchy combinators for HUnit (library, mit, testing)2019-10-16myfreeweb
cv-combinators250.0Functional Combinators for Computer Vision (ai, gpl, graphics, library, program)2015-08-12NoamLewis
servant-github-webhook200.0Servant combinators to facilitate writing GitHub webhooks. (library, mit, web)2019-08-21tsani
indentation280.0Indentation sensitive parsing combinators for Parsec and Trifecta (bsd3, library, parsing)2018-10-06MichaelAdams, OmerAgacan, AlekseyKliger
ribbit342.0Type-level Relational DB combinators. (database, library, mit)2020-04-22taphu
couchdb-conduit790.0Couch DB client library using http-conduit and aeson (bsd3, conduit, database, library)2012-11-02AlexanderDorofeev
linear31192.5Linear Algebra (algebra, bsd3, library, math)2020-10-03AnthonyCowley, EdwardKmett, EricMertens, ryanglscott
simple-cmd-args560.0Simple command args parsing and execution (bsd3, library, system)2020-03-25JensPetersen
data-aviary150.0Combinator birds. (bsd3, combinators, library)2013-04-24StephenTetley
monad-par-extras3480.0Combinators and extra features for Par monads (bsd3, control, library, monads, parallelism)2013-07-12RyanNewton
servant-matrix-param80.0Matrix parameter combinator for servant (library, mit, web)2016-11-03SoenkeHahn, jkarni
luthor70.0Tools for lexing and utilizing lexemes that integrate with Parsec. (bsd3, language, library, text)2015-11-25ZankokuOkuno
haskelldb260.0A library of combinators for generating and executing SQL statements. (bsd3, database, library)2014-09-29BjornBringert, JustinBailey
logging-effect-extra-handler170.0Handy logging handler combinators (library, mit, other, program)2018-08-06jship
show-combinators3990.0Combinators to write Show instances (library, mit, text)2020-03-22lyxia
lens-simple580.0simplified import of elementary lens-family combinators (bsd3, lenses, library)2016-06-23MichaelThompson
decidable280.0Combinators for manipulating dependently-typed predicates. (bsd3, dependent-types, library)2020-02-03jle
sv240.0Encode and decode separated values (CSV, PSV, ...) (bsd3, csv, library, text, web)2020-04-26qfpl, GeorgeWilson
from-sum442.0Combinators for working with Maybe and Either (bsd3, control, library)2020-01-25cdepillabout
pappy80.0Packrat parsing; linear-time parsers for grammars in TDPL. (bsd3, program, text)2012-10-21ChrisDone
grammar-combinators200.0A parsing library of context-free grammar combinators. (library, parsing)2013-01-02DominiqueDevriese
pointless-fun120.0Some common point-free combinators. (bsd3, combinators, composition, library, utils)2015-05-30WrenThornton
binary-parsers300.0Extends binary with parsec/attoparsec style parsing combinators. (bsd3, data, library)2019-06-26winterland
NumberTheory70.0A library for number theoretic computations, written in Haskell. (gpl, library, math)2016-02-17cfredric
test-shouldbe (deprecated in favor of hspec-expectations)50.0Catchy combinators for HUnit (deprecated, library, mit, testing)2015-04-04
dph-lifted-vseg120.0Data Parallel Haskell lifted array combinators. (bsd3, data-structures, library)2012-10-25BenLippmeier
aeson-with230.0withXField combinators for aeson (bsd3, data, library, mit)2020-08-09locallycompact
holmes60.0Tools and combinators for solving constraint problems. (data, library, mit)2020-04-03i_am_tom
mvc-updates130.0Concurrent and combinable updates (bsd3, concurrency, control, library)2014-09-23GabrielGonzalez
validate-input50.0Input validation combinator library (library, mit, web)2015-11-04AlexanderThiemann
pipes-fluid200.0Reactively combines Producers so that a value is yielded as soon as possible. (bsd3, control, frp, library, pipes)2018-06-01louispan
iteratee1380.0Iteratee-based I/O (bsd3, data, library, system)2014-05-19JohnLato
QuickCheck25552.75Automatic testing of Haskell programs (bsd3, library, testing)2020-07-05DonaldStewart, KoenClaessen, NickSmallbone, SimonMarlow
servant-ede50.0Combinators for rendering EDE templates in servant web applications (bsd3, library, program, web)2016-09-16AlpMestanogullari
plumbers110.0Pointless plumbing combinators (acme, bsd3, library)2018-01-11MichaelSloan
shade140.0A control structure used to combine heterogenous types with delayed effects. (bsd3, control, library)2017-05-20fredefox
fadno-xml130.0XML/XSD combinators/schemas/codegen (bsd2, library, music, xml)2020-01-19spopejoy
FPretty1270.0Efficient simple pretty printing combinators (bsd3, library, text.prettyprint)2015-11-16OlafChitil
linkcore100.0Combines multiple GHC Core modules into a single module (bsd3, language, program)2010-05-25TimChevalier
xml-types7450.0Basic types for representing XML (library, mit, text, xml)2020-07-13StephenWeber
async-extra80.0Useful concurrent combinators (library, mit, web)2017-05-28AlexanderThiemann
SimpleH (deprecated in favor of definitive-base)120.0A light, clean and powerful Haskell utility library (deprecated, library, prelude)2013-11-28MarcCoiffier
bytestringparser80.0Combinator parsing with Data.ByteString.Lazy (bsd3, library, parsing, text)2008-01-27BryanOSullivan
elm-hybrid120.0Combine Elm with Haskell for data based applications (bsd3, library, web)2016-07-04matsrietdijk
xhtml-combinators50.0Fast and easy to use XHTML combinators. (bsd3, library, text, web)2011-06-07AlasdairArmstrong
hashable21961.75A class for types that can be converted to a hash value (bsd3, data, library)2019-05-10BryanOSullivan, HerbertValerioRiedel, JohanTibell, MilanStraka
shakebook350.0Shake-based technical documentation generator; HTML & PDF (library, mit, program, web)2020-08-02locallycompact
amazonka-iam-policy140.0Amazon IAM Policy Document DSL and Combinators. (aws, cloud, library, mpl, network)2018-08-14BrendanHay
xml-enumerator (deprecated in favor of xml-conduit)330.0Pure-Haskell utilities for dealing with XML with the enumerator package. (deprecated) (bsd3, deprecated, enumerator, library, xml)2012-01-02MichaelSnoyman
indentation-trifecta100.0Indentation sensitive parsing combinators for Trifecta (bsd3, library, parsing)2018-10-06AlekseyKliger
capability212.0Extensional capabilities and deriving combinators (bsd3, control, library)2020-03-19aherrmann
conduit-audio160.0Combinators to efficiently slice and dice audio streams (bsd3, library, sound)2017-09-02mtolly
mcmc-samplers72.0Combinators for MCMC sampling (bsd3, library, machine-learning, math, numeric, statistics)2014-11-10pravnar, z
type-errors-pretty1552.0Combinators for writing pretty type errors easily (library, mpl, type-errors, types)2020-04-18shersh, vrom911
smash50.0Combinators for Maybe types (bsd3, data, library)2020-04-07topos
cflp460.0Constraint Functional-Logic Programming in Haskell (bsd3, control, library)2009-06-04SebastianFischer
base2162.75Basic libraries (bsd3, library, prelude)2020-05-04AustinSeipp, HerbertValerioRiedel, IanLynagh, PaoloCapriotti
chalkboard110.0Combinators for building and processing 2D images. (bsd3, graphics, library)2009-12-02AndyGill
control-bool120.0Useful combinators for boolean expressions (bsd3, control, library)2013-12-08FumiakiKinoshita
functor-monadic90.0Monad-style combinators for functors. (apache, data, library)2015-05-17jtapolczai, jtapolczai2
servant-auth2780.0Authentication combinators for servant (authentication, bsd3, library, servant, web)2020-10-05AlpMestanogullari, DavidJohnson, phadej, MatthiasFischmann, jkarni, mchaver, domenkozar, arianvp
indentation-core200.0Indentation sensitive parsing combinators core library (bsd3, library, parsing)2018-10-06AlekseyKliger
tax60.0Types and combinators for taxes (agpl, finance, library)2018-08-23frasertweedale
array-memoize280.0Memoization combinators using arrays for finite sub-domains of functions (bsd3, library, syntax)2014-04-04DominicOrchard
servant-namedargs50.0Combinators for servant providing named parameters (bsd3, library, web)2019-03-22CullinPoresky
function-combine60.0Combining functions (bsd3, control, library)2011-09-23IainAlexander
composition-extra350.0Combinators for unorthodox structure composition (bsd3, data, library)2015-09-17athanclark
f-algebra-gen70.0Generate a special f-algebra combinator from any data type. (data, library, mit)2019-07-19bolt12
quiver-cell80.0Quiver combinators for cellular data processing (bsd3, control, library)2015-08-31patrykz
indentation-parsec180.0Indentation sensitive parsing combinators for Parsec (bsd3, library, parsing)2018-10-06AlekseyKliger
Yampa1692.5Elegant Functional Reactive Programming Language for Hybrid Systems (bsd3, frp, library, reactivity)2019-10-15GeorgeGiorgidze, IvanPerez, keera_studios_ci
caseof90.0Combinators for casing on constructors (bsd3, development, library)2018-03-07ChrisDone
sexp-grammar950.0Invertible grammar combinators for S-expressions (bsd3, language, library)2020-08-11EugeneSmolanka, SergeyVinokurov
quiver-bytestring170.0Quiver combinators for bytestring streaming (bsd3, control, library)2015-09-13patrykz
vector-split130.0Combinator library for splitting vectors. (data, data-structures, library, mit)2017-01-31fho
servant-streaming30.0Servant combinators for the 'streaming' package (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
versioning-servant40.0Servant combinators for the versioning library. (apache, data, library)2018-11-08lortabac
servant-zeppelin40.0Types and definitions of servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
compstrat100.0Strategy combinators for compositional data types (bsd3, generics, language, library)2015-03-24JamesKoppel
servant-zeppelin-client30.0Client library for servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
dph-lifted-copy80.0Data Parallel Haskell lifted array combinators. (deprecated version) (bsd3, data-structures, library)2012-10-25BenLippmeier
rose-trie90.0Trees with polymorphic paths to nodes, combining properties of Rose Trees and Tries. (data, gpl, library)2017-03-27RaminHonary
async-combinators (deprecated)60.0Async combinators (concurrency, deprecated, library, mpl)2018-07-23serokell
lambdacube-bullet (deprecated)60.0Example for combining LambdaCube and Bullet (bsd3, deprecated, graphics, library, physics)2011-06-23CsabaHruska
antiquoter50.0Combinator library for quasi- and anti-quoting. (bsd3, library, template-haskell)2013-04-14LarsCorbijn
invertible-grammar1150.0Invertible parsing combinators framework (bsd3, language, library)2020-08-10EugeneSmolanka
data-emoticons50.0Combinator emoticons: data-aviary in the flavor of emoticons (bsd3, combinators, library)2017-04-23lbq
XSaiga1522.0An implementation of a polynomial-time top-down parser suitable for NLP (attribute-grammars, bsd3, library, memoization, natural-language-processing, parser-combinators, parsercombinators, parsing, program, text)2020-10-07InBetweenNames
servant-zeppelin-swagger30.0Swagger instances for servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
aeson-filthy140.0Several newtypes and combinators for dealing with less-than-cleanly JSON input. (bsd3, json, library, text, web)2019-12-08AlecHeller
couchdb-enumerator220.0Couch DB client library using http-enumerator and aeson (bsd3, database, library, web)2012-03-13JohnLenz
kure-your-boilerplate40.0Generator for Boilerplate KURE Combinators (bsd3, language, library)2009-01-27AndyGill
altcomposition90.0Alternative combinators for unorthodox function composition (bsd3, data, library)2016-07-26jcristovao
syntax90.0Reversible parsing and pretty-printing. (data, library, mit)2014-12-12pawel834
type-combinators-singletons50.0Interop between /type-combinators/ and /singletons/. (bsd3, data, library)2018-01-21jle
parsec-utils40.0Utility functions and combinators for Text.Parsec (bsd3, library, parsing)2012-11-06RemcoNiemeijer
servant-zeppelin-server40.0Server library for servant-zeppelin combinators. (bsd3, library, web)2017-06-05martyall
srcloc1140.0Data types for managing source code locations. (bsd3, data, library)2018-03-30GeoffreyMainland
hath452.0Hath manipulates network blocks in CIDR notation. (agpl, program, utils)2019-03-04MichaelOrlitzky
lucid3512.5Clear to write, read and edit DSL for HTML (bsd3, library, web)2019-11-03ChrisDone, phadej
quiver-csv100.0Quiver combinators for cellular CSV data processing (bsd3, control, library)2015-08-04patrykz
repa1852.0High performance, regular, shape polymorphic parallel arrays. (bsd3, data-structures, library)2018-10-03BasVanDijk, BenLippmeier, PepeIborra, TrevorMcDonell, vmchale
reproject40.0Define and combine "materialized" projections (bsd3, library, web)2017-06-16AlexanderThiemann
text-lips20.0Monadic parsing combinator library with attention to locations (bsd3, library, parsing, text)2017-07-29MikhailVorozhtsov
moe350.0html with style (bsd3, library, web)2015-05-03JinjingWang
foldl18232.5Composable, streaming, and efficient left folds (bsd3, control, library)2020-09-28GabrielGonzalez
symantic-http30.0Symantic combinators for deriving clients or a server from an HTTP API (gpl, library, protocol)2019-04-12julm
quickcheck-property-comb60.0Combinators for Quickcheck Property construction and diagnostics (library, public-domain, testing)2013-12-26jfeltz
tasty16722.5Modern and extensible testing framework (library, mit, testing)2020-10-25EdwardKmett, OliverCharles, RomanCheplyaka, bergey
numbering70.0Combinators for creating bijections from some type to the natural numbers. (bsd3, data, library)2012-03-10DanielSchuessler
type-combinators-quote30.0Quasiquoters for the 'type-combinators' package. (bsd3, data, library)2016-01-26KyleCarter
type-level-natural-number-induction50.0High-level combinators for performing inductive operations. (bsd3, data, library, type-system)2012-07-23GregoryCrosswhite
treefold70.0Provides folds which try to combine elements in a balanced way. (data, library, mit)2017-10-04oisdk
binary-ieee754190.0Backport ieee754 float double combinators to older binary (bsd3, data, library)2016-10-24winterland
glue-core352.0Make better services and clients. (bsd3, library, network)2019-03-17seanparsons
bidirectionalization-combined50.0Prototype Implementation of Combining Syntactic and Semantic Bidirectionalization (ICFP'10) (language, program, public-domain)2010-09-27JoachimBreitner
sec40.0Semantic Editor Combinators. (bsd3, combinators, data, library)2010-03-30SteffenSiering
halves80.0Split or combine data structures to and from halves, quarters, eighths (bsd3, data, library)2018-10-15puffnfresh
irc520.0A small library for parsing IRC messages. (bsd3, data, library, network)2014-12-16TrevorElliott
derp140.0Derivative Parsing (bsd3, library, parsing)2012-03-28DavidDarais
parsec-numeric50.0Parsec combinators for parsing Haskell numeric types. (library, parsing)2017-01-07andrewrademacher
lens-prelude50.0Alternate prelude that exports lens combinators (bsd3, library, web)2015-10-27andrewthad
these12382.5An either-or-both data type. (bsd3, data, library, these)2020-07-14JohnWiegley, phadej, cmccann
plex40.0run a subprocess, combining stdout and stderr (library, mit, system)2018-04-04phlummox
graph-rewriting-layout260.0Force-directed node placement intended for incremental graph drawing (bsd3, graphics, graphs, library)2017-05-23JanRochel
threepenny-editors350.0Composable algebraic editors (bsd3, library, web)2018-10-07PepeIborra
treersec40.0Structure Editing Combinators (bsd2, gui, library)2015-11-13JasonPriestley
Zwaluw40.0Combinators for bidirectional URL routing (bsd3, library, text)2010-11-07MartijnVanSteenbergen
pointless-lenses210.0Pointless Lenses library (bsd3, generics, library)2012-01-26HugoPacheco
jason50.0A fast JASONETTE-iOS JSON combinator library for haskell. (bsd3, library, program, value)2016-11-10Lupino
numhask-prelude (deprecated in favor of numhask)350.0A numeric prelude (bsd3, deprecated, library, mathematics)2020-05-20tonyday567
unbound300.0Generic support for programming with names and binders (bsd3, compilers-interpreters, generics, language, library)2018-10-15BrentYorgey, sweirich
valid (deprecated)30.0Type isomorphic to `Either` with `Applicative` instance which combines errors (bsd3, deprecated, library, unclassified)2019-08-22
yst550.0Builds a static website from templates and data in YAML or CSV files. (program, text)2019-11-26JohnMacFarlane
strictly20.0Combinators for strictifying functions (bsd3, control, library)2013-08-14DanBurton
authoring160.0A library for writing papers (bsd3, library, text)2014-07-07TakayukiMuranushi
MonadCatchIO-transformers-foreign (deprecated)30.0Polymorphic combinators for working with foreign functions (bsd3, control, deprecated, library)2010-05-29AntoineLatter
gitlib812.0API library for working with Git repositories (ffi, library, mit)2018-05-31JohnWiegley
ivor (deprecated in favor of idris)220.0Theorem proving library based on dependent type theory (bsd3, dependent-types, deprecated, library, theorem-provers)2011-06-16EdwinBrady, GwernBranwen
COrdering80.0An algebraic data type similar to Prelude Ordering. (bsd3, data, library)2008-07-23AdrianHey
querystring-pickle230.0Picklers for de/serialising Generic data types to and from query strings (data, library, network, web)2014-06-23BrendanHay
monad-lgbt50.0Monad transformers for combining local and global state. (bsd2, control, library)2016-07-23MichalGajda
MonadCatchIO-mtl-foreign (deprecated)40.0Polymorphic combinators for working with foreign functions (bsd3, control, deprecated, library)2010-05-29AntoineLatter
ADPfusion460.0Efficient, high-level dynamic programming. (algorithms, bioinformatics, bsd3, data-structures, formal-languages, library)2019-10-01ChristianHoener
monad-parallel800.0Parallel execution of monadic computations (bsd3, control, library, monads)2018-02-25MarioBlazevic
lens-action500.0Monadic Getters and Folds (bsd3, data, generics, lenses, library)2019-09-13EdwardKmett, EricMertens, ryanglscott
allocated-processor80.0Functional combinators for monadic actions that require allocation and de-allocation (bsd3, control, library)2010-05-23NoamLewis
lens39413.0Lenses, Folds and Traversals (bsd2, data, generics, lenses, library)2020-04-15EdwardKmett, EricMertens, JohnWiegley, ryanglscott
derp-lib30.0combinators based on parsing with derivatives (derp) package (bsd3, library, text)2011-11-11KiYungAhn
time-patterns140.0Patterns for recurring events (bsd3, data, library, time)2018-07-02jfmueller
wai-predicates200.0WAI request predicates (library, web)2017-08-06ToralfWittner
pipes-cellular60.0Pipes-based combinators for cellular data processing (bsd3, control, library, pipes)2015-07-07patrykz
functional-arrow50.0Combinators that allow for a more functional/monadic style of Arrow programming (bsd3, combinators, library)2010-09-26HenningThielemann
ess40.0The type-level S combinator in Haskell. (data, library, mit)2015-04-25MichaelOChurch
proof-combinators20.0Proof Combinators used in Liquid Haskell for Theorem Proving (library, mit, theorem-proving)2018-03-28nikivazou
wai-request-spec130.0Declarative request parsing (bsd3, library, network, wai)2016-12-30alleledev
waitfree110.0A wrapping library for waitfree computation. (concurrency, library, mit, system)2011-06-07YoichiHirai
servant-streaming-docs30.0Client instances for the 'servant-docs' package. (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
fused-effects-lens102.0Monadic lens combinators for fused-effects. (bsd3, control, library)2020-07-10patrick_thomson, robrix
TrieMap570.0Automatic type inference of generalized tries with Template Haskell. (algorithms, bsd3, library)2013-04-18LouisWasserman
mulang180.0An intermediate language designed to perform advanced code analysis (language, library, program)2019-01-11flbulgarelli
grids160.0 (bsd3, data-structures, library)2019-03-10ChrisPenner
pointless-rewrite70.0Pointless Rewrite library (bsd3, generics, library)2012-01-26HugoPacheco
interleave40.0Combinators for supporting interleaving of different behaviours (bsd3, control, library)2011-01-07NeilBrown
checkers1812.0Check properties on standard classes and data structures. (bsd3, library, testing)2020-06-18ConalElliott, sjakobi
graph-rewriting-cl (deprecated in favor of graph-rewriting-trs)50.0Interactive graph rewriting system implementing various well-known combinators (application, bsd3, deprecated, graphs, program)2011-02-07JanRochel
Annotations180.0Constructing, analyzing and destructing annotated trees (bsd3, generics, library)2016-12-05MartijnVanSteenbergen
HTTP14122.0A library for client-side HTTP (bsd3, library, network)2020-09-12BjornBringert, BryanOSullivan, DonaldStewart, DuncanCoutts, GaneshSittampalam, JohanTibell, SigbjornFinne
HCodecs1060.0A library to read, write and manipulate MIDI, WAVE, and SoundFont2 files. (bsd3, codec, library)2020-02-21GeorgeGiorgidze, DonyaQuick, Mokosha
redHandlers20.0Monadic HTTP request handlers combinators to build a standalone web apps. (library, web)2009-05-15SergioUrinovsky
termination-combinators10.0Termination combinators for forcing non-terminating algorithms to terminate (bsd3, language, library)2011-09-19MaxBolingbroke
hoist-error220.0Some convenience facilities for hoisting errors into a monad (control, library, mit)2018-06-15JonSterling, schalmers, qfpl
DSH1090.0Database Supported Haskell (bsd3, database, library, program)2015-06-03GeorgeGiorgidze, JeroenWeijers, AlexUlrich, AlexUlrich2
murder210.0MUtually Recursive Definitions Explicitly Represented (development, library)2013-11-12MarcosViera
unbound-generics342.0Support for programming with names and binders using GHC Generics (bsd3, language, library)2020-05-11AlekseyKliger
regex-tdfa-utf820.0This combines regex-tdfa with utf8-string to allow searching over UTF8 encoded lazy bytestrings. (bsd3, library, text)2009-03-22ChrisKuklewicz
invertible-syntax70.0Invertible syntax descriptions for both parsing and pretty printing. (bsd3, library, text)2011-09-21TillmannRendel
rematch180.0A simple api for matchers (control, library, mit)2013-05-19TomCrayford
MFlow1230.0stateful, RESTful web framework (application-server, bsd3, library, web)2015-09-21AlbertoCorona
records230.0A flexible record system (bsd3, data, library, records)2012-01-15WolfgangJeltsch
monad-par5142.25A library for parallel programming based on a monad (bsd3, control, library, monads, parallelism)2019-11-04RyanNewton, SimonMarlow
kangaroo90.0Binary parsing with random access. (bsd3, library, parsing)2010-02-23StephenTetley
STMonadTrans2290.0A monad transformer version of the ST monad (bsd3, library, monads)2019-07-06JosefSvenningsson
acme-php140.0The flexibility of Haskell and the safety of PHP (acme, bsd3, library)2016-04-20JoeQuinn
haphviz310.0Graphviz code generation with Haskell (library, mit, text)2016-12-02Norfair
pipes-async110.0A higher-level interface to using concurrency with pipes (bsd3, control, library)2018-07-23JohnWiegley
polysoup340.0Online XML parsing with polyparse and tagsoup (bsd3, library, xml)2020-03-09JakubWaszczuk
io-streams8992.5Simple, composable, and easy-to-use stream I/O (bsd3, data, io-streams, library, network)2020-09-07DougBeardsley, GregoryCollins
fields50.0First-class record field combinators with infix record field syntax. (bsd3, data, library)2010-08-11JussiKnuuttila
rmonad250.0Restricted monad library (bsd3, control, library)2013-12-23GaneshSittampalam
named-sop20.0Dependently-typed sums and products, tagged by field name (data, library, mit)2020-02-20sjsch
HUnit-approx130.0Approximate equality for floating point numbers with HUnit (bsd3, library, testing)2017-10-31RichardEisenberg
quiver-interleave140.0Interleave values from multiple Quivers (control, library, mit)2016-11-26IvanMiljenovic
hurdle100.0Extract function names from Windows DLLs. (bsd3, program, system)2010-02-24StephenTetley
TV270.0Tangible Values -- composable interfaces (bsd3, interfaces, library)2013-08-14ConalElliott
microlens10512.5A tiny lens library with no dependencies (bsd3, data, lenses, library)2019-07-05Artyom
fclabels3542.25First class accessor labels implemented as lenses. (bsd3, data, lenses, library)2020-05-22AdamBergmark, ErikHesselink, SebastiaanVisser
xml-picklers270.0XML picklers based on xml-types, ported from hexpat-pickle (bsd3, library, xml)2015-04-01PhilippBalzarek
islink50.0Check if an HTML element is a link (bsd3, html, library, xml)2014-10-07MariosTitas
yaya210.0Total recursion schemes. (agpl, library, recursion)2020-06-01sellout
uvector120.0Fast unboxed arrays with a flexible interface (bsd3, data, library)2010-02-15BryanOSullivan, DonaldStewart
dunai750.0Generalised reactive framework supporting classic, arrowized and monadic FRP. (bsd3, frp, library, reactivity)2020-04-18IvanPerez, keera_studios_ci, keera_studios_ci_dunai
line-bot-sdk191.5Haskell SDK for LINE Messaging API (bsd3, library, network, program, web)2020-02-05moleike
sdl2-compositor160.0image compositing with sdl2 - declarative style (gpl, graphics, library)2017-06-12seppeljordan
rio-prettyprint1470.0Pretty-printing for RIO (bsd3, development, library)2020-08-05MichaelSnoyman, borsboom, fpcomplete
semialign3530.0Align and Zip type-classes from the common Semialign ancestor. (bsd3, data, library, these)2020-07-14phadej
concatenative420.0A library for postfix control flow. (bsd3, control, library)2010-07-02SamAnklesaria
compilation90.0Haskell functionality for quickly assembling simple compilers. (compilers-interpreters, gpl, language, library)2013-08-20AndreiLapets
microlens-process202.0Micro-optics for the process library (bsd3, library, system)2020-05-30topos
testpack (deprecated)150.0Test Utililty Pack for HUnit and QuickCheck (unmaintained) (deprecated, library, testing)2014-10-27JohnGoerzen, PeterSimons
mtl-prelude410.0Reexports of most definitions from "mtl" and "transformers" (library, mit, prelude)2016-05-24NikitaVolkov
aivika2792.0A multi-method simulation library (bsd3, library, simulation)2018-12-21DavidSorokin
eventloop600.0A 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
log-effect-syslog80.0Syslog functions for log-effect (bsd3, control, effect, library, logging, syslog)2019-03-02sickmind
local-search140.0Generalised local search within Haskell, for applications in combinatorial optimisation. (control, library, local-search, optimisation)2013-07-18RichardSenington
obdd1480.0Ordered Reduced Binary Decision Diagrams (library, logic)2018-05-20JohannesWaldmann
lens-process292.0Optics for system processes (bsd3, library, system)2020-05-30topos
overhang112.25Hang loose with your lambdas! (combinators, functions, library, mit, utility)2018-02-02jship
stable-memo140.0Memoization based on argument identity (data, library, mit)2015-07-12JakeMcArthur
gemstone130.0A simple library of helpers for SDL+GL games. (game, library)2013-02-09CorbinSimpson
archiver260.0Archive supplied URLs in WebCite & Internet Archive (bsd3, documentation, library, network, program)2014-01-03GwernBranwen
declarative280.0DIY Markov Chains. (library, math, mit)2020-05-22JaredTobin
deepseq-generics1890.0GHC.Generics-based Control.DeepSeq.rnf implementation (bsd3, control, library)2016-01-03HerbertValerioRiedel
type-functions70.0Emulation of type-level functions (bsd3, library, type-system)2016-07-21WolfgangJeltsch
morphisms70.0It's all about functions (control, data, library, mit)2019-01-04iokasimovmt
binary-search1510.0Binary and exponential searches (algorithms, bsd3, library)2016-01-22RossPaterson, TakayukiMuranushi
text-manipulate2480.0Case conversion, word boundary manipulation, and textual subjugation. (data, library, text)2015-04-17BrendanHay
elerea782.0A minimalistic FRP library (bsd3, frp, library, reactivity)2016-06-19GergelyPatai
bearriver270.0FRP Yampa replacement implemented with Monadic Stream Functions. (bsd3, frp, library)2020-04-18IvanPerez, keera_studios_ci, keera_studios_ci_dunai
iteratee-mtl (deprecated in favor of iteratee)110.0Iteratee-based I/O (bsd3, data, deprecated, library, system)2010-10-27JohnLato
servant-snap412.0A family of combinators for defining webservices APIs and serving them (bsd3, library, program, web)2020-09-07imalsogreg
graphs660.0A simple monadic graph library (algorithms, bsd3, data-structures, graphs, library)2018-02-24EdwardKmett, ryanglscott
levmar590.0An implementation of the Levenberg-Marquardt algorithm (bsd3, library, math, numerical)2018-05-07BasVanDijk, RoelVanDijk
nest50.0 (bsd3, library, unclassified)2018-05-03MarkHibberd, lambda_foo
compdata900.0Compositional Data Types (bsd3, generics, library)2018-09-24PatrickBahr
wraxml90.0Lazy wrapper to HaXML, HXT, TagSoup via custom XML tree structure (library, xml)2016-07-27HenningThielemann
verifiable-expressions30.0An intermediate language for Hoare logic style verification. (apache, language, library)2019-08-17mdanish, madgen
data-accessor2690.0Utilities for accessing and manipulating fields of records (bsd3, data, library)2019-05-23HenningThielemann, LukePalmer
ad12282.5Automatic Differentiation (bsd3, library, math)2020-10-13EdwardKmett, EricMertens, ryanglscott
onama90.0HTML-parsing primitives for Parsec. (bsd3, library, text)2017-02-09williamyaoh
pipes-extra70.0Various basic utilities for Pipes. (bsd3, control, enumerator, library)2012-06-09PaoloCapriotti
constraint-manip60.0Some conviencience type functions for manipulating constraints. (control, library, mit)2017-10-16clinton
arith-encode1390.0A practical arithmetic encoding (aka Godel numbering) library. (bsd3, data, library, serialization, test, testing)2020-02-09emc2, Bodigrim
hexpat-pickle170.0XML picklers based on hexpat, source-code-similar to those of the HXT package (bsd3, library, xml)2012-04-27StephenBlackheath
tardis332.0Bidirectional state monad transformer (bsd3, control, library)2016-04-25DanBurton
selections920.0Combinators for operating with selections over an underlying functor (bsd3, data-structures, functors, library)2020-10-21ChrisPenner
libffi-dynamic120.0LibFFI interface with dynamic bidirectional type-driven binding generation (foreign, library)2019-05-29JamesCook
bf-cata70.0 (development, library)2010-10-16ArieMiddelkoop
bindings-levmar360.0Low level bindings to the C levmar (Levenberg-Marquardt) library (ffi, library, numerical)2018-05-07BasVanDijk, RoelVanDijk
servant-streaming-client40.0Client instances for the 'servant-streaming' package. (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
netwire-vinylglfw-examples60.0Netwire/GLFW/VinylGL input handling demo (game, mit, program)2016-10-22RandKleisli
dumb-cas180.0A computer “algebra” system that knows nothing about algebra, at the core. (gpl, library, math)2019-02-12leftaroundabout
animate-sdl270.0sdl2 + animate auxiliary library (bsd3, game, library)2018-05-20jxv
first-class-patterns312.0First class patterns and pattern matching, using type families (bsd3, data, library, pattern)2019-10-01BrentYorgey, ReinerPope, shersh, vrom911
reflex-animation150.0Continuous animations support for reflex (bsd3, frp, library)2015-10-20saulzar
libssh2280.0FFI bindings to libssh2 SSH2 client library (http://libssh2.org/) (bsd3, library, network)2018-11-22IlyaPortnov
twidge200.0Unix Command-Line Twitter and Identica Client (network, program)2014-06-21JohnGoerzen
process-iterio20.0IterIO Process Library (bsd3, library, system)2012-11-05GregFitzgerald
zoom-cache360.0A streamable, seekable, zoomable cache file format (bsd3, development, library, program)2012-12-07ConradParker
graph-generators132.0Functions for generating structured or random FGL graphs (algorithms, apache, graphs, library, program)2018-06-08ulikoehler
yet-another-logger170.0Yet Another Logger (apache, library, logging, program, system)2020-04-07larsk, fosskers
type-eq120.0Type equality evidence you can carry around (bsd3, library, type-system)2015-02-10AdamBergmark, GaborLehel
gloss-game120.0Gloss wrapper that simplifies writing games (bsd3, game, graphics, library)2014-08-03ManuelChakravarty
hs-pkg-config110.0Create pkg-config configuration files (bsd3, data, development, library)2014-12-24PeterTrsko
servant-streaming-server40.0Server instances for the 'servant-streaming' package. (bsd3, library, unclassified)2018-06-30jkarni, domenkozar
terrahs90.0A Haskell GIS Programming Environment (gis-programs, library)2013-07-07SergioCosta
funcons-values120.0Library providing values and operations on values in a fixed universe. (compilers-interpreters, library, mit)2019-03-02ltvanbinsbergen
iterIO100.0Iteratee-based IO with pipe operators (bsd3, data, enumerator, library, system)2012-04-19AmitLevy, DavidMazieres, DanielBGiffin
pointedalternative20.0Alternative done right (bsd3, library)2016-08-25Gurkenglas
extensible1300.0Extensible, efficient, optics-friendly data types and effects (bsd3, data, library, records)2020-09-19FumiakiKinoshita
Paraiso300.0a code generator for partial differential equations solvers. (bsd3, language, library)2015-12-03TakayukiMuranushi
wumpus-core320.0Pure Haskell PostScript and SVG generation. (bsd3, graphics, library)2012-05-01StephenTetley
references370.0Selectors for reading and updating data. (bsd3, control, library)2017-11-28lazac
transf190.0Text transformer and interpreter. (bsd3, compilers-interpreters, library, program, text)2014-08-19HansHoglund
gtk2hs-rpn140.0Adds a module to gtk2hs allowing layouts to be defined using reverse polish notation. (gui, library)2011-09-23MauricioAntunes
acme-zalgo142.25A somewhat flexible Zalgo̐ te̳͜x̥̖̉̓͞t̍̌̔ ̀̃t̴̢̞̜͓̝r̶̬̆̂̒͟á̧̡͎͔̯̰̕n̹̾̓ͬͦ̍͘ṡ̢͓͉ͮ͆l̠̖̹̗̳̖̽̌ͤ͞a͚̭͙̹̲ͭͩt͈͐o̢̭͇͍̟͐ͬ̾ͪ͜r͇.̸̅ͭ̐̀̊ͨ͛ (acme, library, mit)2018-02-25AntonEkblad
harpy240.0Runtime code generation for x86 machine code (bsd3, code-generation, library)2015-05-26DirkKleeblatt, MartinGrabmueller
urldisp-happstack10.0Simple, declarative, expressive URL routing -- on happstack. (bsd3, language, library)2009-07-25SterlingClover
grafana00.0API for creating grafana dashboards represented as json (bsd3, graphics, library, tooling)2019-09-12chessai
mtlx190.0Monad transformer library with type indexes, providing 'free' copies. (bsd3, control, library)2012-10-15MarkSnyder
PortFusion260.0high-performance distributed reverse / forward proxy & tunneling for TCP (gpl, network, program, system)2012-08-19CetinSert
servant-auth-server3740.0servant-server/servant-auth compatibility (authentication, bsd3, library, servant, web)2020-10-06AlpMestanogullari, DavidJohnson, phadej, MatthiasFischmann, jkarni, mchaver, domenkozar, arianvp
wumpus-basic260.0Basic objects and system code built on Wumpus-Core. (bsd3, graphics, library)2012-05-01StephenTetley
funcons-tools170.0A modular interpreter for executing funcons (compilers-interpreters, library, mit, program)2019-03-02ltvanbinsbergen
Tainted110.0Tainted type, and associated operations (bsd3, control, data, library, monads, trans)2015-05-27RossMeikleham
GuiHaskell80.0A graphical REPL and development environment for Haskell (bsd3, development, program)2008-03-06NeilMitchell
yesod-test-json30.0Utility functions for testing JSON web services written in Yesod (bsd3, library, web)2012-08-17SamAnklesaria
sessiontypes-distributed50.0Session types distributed (control, gpl, library)2018-01-13ferdinandvw
category-printf100.0Highbrow approach to type-safe printf format specifications. (bsd3, library, text)2016-05-08CaleGibbard
dynamic-object120.0Object-oriented programming with duck typing and singleton classes. (bsd3, data, library)2013-01-15TakayukiMuranushi
ghci-pretty90.0colored pretty-printing within ghci (development, library, mit)2014-11-13larsk
gencheck50.0A testing framework inspired by QuickCheck and SmallCheck (bsd3, library, testing)2012-06-19JacquesCarette
minilens182.0A minimalistic lens library, providing only the simplest, most basic lens functionality. (data, gpl, lens, library)2016-05-31RaminHonary
exists80.0Existential datatypes holding evidence of constraints (bsd3, constraints, library)2012-05-15GaborLehel
bff150.0Bidirectionalization for Free! (POPL'09) (data, library, public-domain)2011-03-22DanielSeidel, JanisVoigtlaender, JoachimBreitner
chunks40.0Simple template library with static safety (library, text)2007-04-18MatthewSackman
monad-memo2202.0Memoization monad transformer (bsd3, control, library, monad)2020-09-21EduardSergeev
mapalgebra110.0Efficient, polymorphic Map Algebra. (bsd3, geography, library)2020-02-02fosskers
rados-haskell122.0librados haskell bindings (bsd3, library, system)2014-08-22ChristianMarie
non-empty390.0List-like structures with static restrictions on the number of elements (bsd3, data, library)2019-05-23HenningThielemann
pathtype930.0Type-safe replacement for System.FilePath etc (bsd3, library, system)2020-06-24BenMoseley, HenningThielemann
yaml-combinators270.0YAML parsing combinators for improved validation and error reporting (library, mit, text)2020-09-06RomanCheplyaka
interval40.0Intervals with adherences. (data-structures, gpl, library)2016-08-21julm
template-hsml50.0Haskell's Simple Markup Language (bsd3, library, template, templating, web)2012-08-30PetrPilar
metaheuristics30.0Generalised local search within Haskell, for applications in combinatorial optimisation. (control, library, local-search, optimisation)2019-10-04richardjamessenington
pipes-core (deprecated in favor of pipes)60.0Compositional pipelines (bsd3, control, deprecated, enumerator, library)2012-04-09PaoloCapriotti
hsnoise100.0A coherent 3d noise library. (bsd3, library, noise)2011-05-05ColinHill
master-plan530.0The project management tool for hackers (library, mit, program, tools)2017-08-18rodrigosetti
data-filter50.0Utilities for filtering (bsd2, data, library)2018-05-17boonami
servant-auth-client2290.0servant-client/servant-auth compatibility (authentication, bsd3, library, servant, web)2020-10-06AlpMestanogullari, DavidJohnson, phadej, MatthiasFischmann, jkarni, mchaver, domenkozar, arianvp
adaptive-tuple100.0Self-optimizing tuple types (bsd3, data, library)2010-03-16JohnLato
kinds120.0Emulation of subkinds and subkind polymorphism (bsd3, library, type-system)2012-01-15WolfgangJeltsch
count50.0Bijective mappings between values and possibly infinite prefixes of [0..] (bsd3, data, library)2014-06-10Maxdamantus
yampa-gloss50.0A GLOSS backend for Yampa (graphics, library, mit)2019-02-24IvanPerez
PrimitiveArray-Pretty60.0Pretty-printing for primitive arrays (bsd3, data, library)2017-03-03ChristianHoener
workflow-extra40.0Utilities (e.g. Googling the clipboard contents) for the `workflow` pacakge (bsd3, library, program, todo)2017-05-04sboo
sneathlane-haste60.0A compositional web UI library, which draws to a Canvas element (bsd2, gui, library)2015-11-13JasonPriestley
nvim-hs-ghcid100.0Neovim plugin that runs ghcid to update the quickfix list (apache, editor, library, program)2019-05-27saep
error-message90.0Composable error messages. (bsd3, development, error-handling, library)2010-11-15GregoryCrosswhite
set-monad100.0Set monad (bsd3, data, library, monad)2018-10-11GeorgeGiorgidze
argon2300.0Memory-hard password hash and proof-of-work function (bsd3, cryptography, library)2018-04-07HerbertValerioRiedel, JoeyHess, OliverCharles
dzen-utils50.0Utilities for creating inputs for dzen. (library, system)2012-05-31FelipeLessa, javran, ianclement
reactive-banana-bunch80.0Extend reactive-banana to multiple events per time point (bsd3, frp, library)2018-09-01HenningThielemann
seclib110.0A simple library for static information-flow security in Haskell (bsd3, library, security)2014-12-15AlejandroRusso
control-monad-exception730.0Explicitly typed, checked exceptions with stack traces (control, failure, library, mit, monads)2020-07-06PepeIborra
stt50.0A monad transformer version of the ST monad (control, library, mit)2016-11-06mckeankylej
tower (deprecated in favor of numhask)20.0A numeric tower (bsd3, deprecated, library, mathematics)2017-02-21tonyday567
symantic-base40.0Basic symantics for writing Embedded Domain-Specific Languages (EDSL). (data-structures, gpl, library)2020-08-18julm
proplang20.0A library for functional GUI development (bsd3, library, user-interfaces)2007-08-15NeilMitchell
loops150.0Fast imperative-style loops (bsd3, control, library)2014-06-13ThomasTuegel
dynamic-pp60.0A pretty-print library that employs a dynamic programming algorithm for optimal rendering. (bsd3, library, text)2015-07-19emc2
yuiGrid10.0Grids defined by layout hints and implemented on top of Yahoo grids. (library, web)2009-05-15SergioUrinovsky
Yampa-core70.0Library for programming hybrid systems. (bsd3, frp, library, reactivity)2015-06-25NikolayOrlyuk
unbound-kind-generics20.0Support for programming with names and binders using kind-generics (bsd3, language, library)2019-09-10AlejandroSerrano
comfort-array332.0Arrays where the index type is a function of the shape type (bsd3, data-structures, library)2019-05-23HenningThielemann
unique-logic-tf140.0Solve simple simultaneous equations (bsd3, library, logic-programming)2019-01-22HenningThielemann
HPlot70.0A minimal monadic PLplot interface for Haskell (bsd3, foreign, graphics, library, program)2009-08-04YakovZaytsev
binary-derive80.0Automatic deriving of Binary using GHC.Generics (data, gpl, library)2011-11-05JaredHance
narc110.0Query SQL databases using Nested Relational Calculus embedded in Haskell. (bsd3, database, library)2011-08-09EzraCooper
servant-auth-swagger1310.0servant-swagger/servant-auth compatibility (authentication, bsd3, library, servant, web)2020-10-06AlpMestanogullari, DavidJohnson, phadej, MatthiasFischmann, jkarni, mchaver, domenkozar, arianvp
semialign-extras10.0Extra functions for working with Semialigns (bsd3, data, library)2019-11-15qfpl, jack
vitrea00.0Profunctor optics via the profunctor representation theorem. (gpl, lenses, library)2020-03-30mroman42
probable82.0Easy and reasonably efficient probabilistic programming and random generation (bsd3, library, math, statistics)2018-02-11AlpMestanogullari
type-digits70.0Arbitrary-base type-level digits (bsd3, library, type-system)2013-07-31NicolasFrisby
web-page30.0Monoidally construct web pages (bsd3, library, web)2014-09-28ErtugrulSoeylemez, esz
brotli-streams220.0IO-Streams interface for Brotli (RFC7932) compression (bsd3, codec, compression, io-streams, library)2019-04-20HerbertValerioRiedel
memo-ptr40.0Pointer equality memoization (control, library, mit)2015-05-31edofic
curl-aeson50.0Communicate with HTTP service using JSON (bsd3, json, library, network, web)2014-08-24JoelLehtonen
streaming-brotli20.0Streaming interface for Brotli (RFC7932) compression (bsd3, codec, compression, library, streaming)2019-04-22HerbertValerioRiedel
tree-traversals40.0Functions and newtype wrappers for traversing Trees (data, library)2019-12-11NoahEasterly
hashflare30.0A library for working with HashFlare.io contracts and hashrates (bsd2, data, library)2017-01-20nbrk
brotli282.0Brotli (RFC7932) compression and decompression (codec, compression, gpl, library)2019-04-20HerbertValerioRiedel
pipes-brotli40.0Brotli (RFC7932) compressors and decompressors for the Pipes package (bsd3, codec, compression, library, pipes)2019-04-20HerbertValerioRiedel
encode-string40.0Safe string conversion and encoding (data, library, mit, string, text)2017-03-15minad
birds-of-paradise30.0Birds of Paradise (bsd3, language, library)2020-07-12KatsutoshiItoh
semi-iso110.0Weakened partial isomorphisms, reversible computations. (control, data, library, mit)2014-12-12pawel834
yall70.0Lenses with a southern twang (bsd3, data, library)2012-09-21BrandonSimmons
wahsp10.0A haskell binding of the Web Audio API ala blank-canvas (bsd3, library, web)2016-09-18nshaheed
AERN-Net (deprecated in favor of aern2-mp, aern2-real)90.0Compositional lazy dataflow networks for exact real number computation (bsd3, deprecated, distributed-computing, library, math)2009-07-29MichalKonecny
aivika-gpss170.0GPSS-like DSL for Aivika (bsd3, library, simulation)2018-03-17DavidSorokin
monad-task70.0A monad transformer that turns event processing into co-routine programming. (bsd3, control, library)2018-01-04PaulLiu
crypto-enigma812.0An Enigma machine simulator with display. (bsd3, cryptography, education, library, program)2019-10-09Orome
fuzzy-parse30.0Tools for processing unstructured text data (library, mit, parsing, text)2020-07-07voidlizard
hout30.0Non-interactive proof assistant monad for first-order logic. (bsd3, library, logic, type-system)2020-04-11ivanbakel
open-pandoc (deprecated in favor of pandoc)60.0Conversion between markup formats (deprecated, text)2010-04-14PeterSimons
unique-logic70.0Solve simple simultaneous equations (bsd3, library, logic-programming)2018-02-17HenningThielemann
Nutri20.0A little library to calculate nutrition values of food items. (library, public-domain, utils)2013-11-27frosch03
servant-auth-docs1270.0servant-docs/servant-auth compatibility (authentication, bsd3, library, servant, web)2018-06-18AlpMestanogullari, DavidJohnson, phadej, MatthiasFischmann, jkarni, mchaver, domenkozar, arianvp
dpor (deprecated in favor of dejafu)90.0A generic implementation of dynamic partial-order reduction (DPOR) for testing arbitrary models of concurrency. (deprecated, library, mit, testing)2016-06-06barrucadu
rpm30.0Cozy little project to question unruly rpm packages. (bsd3, library, system)2010-11-01EricStolten
porcupine-core62.0Express portable, composable and reusable data tasks and pipelines (arrows, combinators, control, data, json, library, mit, numerical, pipes, program, streaming)2019-10-09YvesPares
app-lens100.0applicative (functional) bidirectional programming beyond composition chains (bsd3, data, lenses, library)2016-09-25kztk
streamly1312.5Beautiful Streaming, Concurrent and Reactive Composition (bsd3, concurrency, control, library, reactivity, streaming)2020-04-23harendra, pranaysashank
Prelude160.0A Prelude module replacement (bsd3, library, prelude)2018-08-29HerbertValerioRiedel
typedflow30.0Typed frontend to TensorFlow and higher-order deep learning (deep-learning, lgpl, library)2017-10-26JeanPhilippeBernardy
schedule20.0Pure deterministic scheduled computations (control, delay, gpl, library, schedule, time, timeout)2020-04-03infinity0
scotty-haxl20.0Combine scotty and haxl (bsd3, concurrency, library, scotty, web)2020-09-02Lupino
lrucaching-haxl40.0Combine lrucaching and haxl. (bsd3, concurrency, data, library, lrucache)2020-09-02Lupino
keera-hails-reactive-wx100.0Haskell on Rails - Reactive Fields for WX widgets (bsd3, development, library)2020-08-13IvanPerez, keera_studios_ci
json-tokens00.0Tokenize JSON (bsd3, data, library)2019-09-30andrewthad
brotli-conduit50.0Conduit interface for Brotli (RFC7932) compression. (bsd3, codec, compression, conduit, library)2019-04-20HerbertValerioRiedel
Shpadoinkle-lens540.0Lens combinators for Shpadoinkle applications. (bsd3, library, web)2020-10-07fresheyeball
caching (deprecated)10.0Cache combinators. (bsd3, data, deprecated, library)2020-09-05davean
rediscaching-haxl20.0Combine redis caching and haxl. (bsd3, cache, database, library)2020-09-02Lupino
fpnla50.0A library for NLA operations (bsd3, library, math)2014-02-04mblanco
SNet20.0Declarative coördination language for streaming networks. (language, lgpl, library)2012-09-24MerijnVerstraaten
dunai-core40.0Generalised reactive framework supporting classic, arrowized and monadic FRP. (Core library fork.) (bsd3, frp, library, reactivity)2018-10-21turion
MC-Fold-DP110.0Folding algorithm based on nucleotide cyclic motifs. (bioinformatics, gpl, library, program)2012-11-12ChristianHoener
function-instances-algebra30.0Instances of the Algebra.* classes for functions (bsd3, library, math)2012-03-25TobiasBrandt
tasty-integrate30.0automated integration of QuickCheck properties into tasty suites (bsd3, program, testing)2014-02-02jfeltz
perdure130.0Robust persistence for acyclic immutable data (database, library, program)2012-09-26PatrickPremont
network-uri-flag40.0Pseudo-package encapsulating flag(network-uri) Cabal boilerplate (bsd3, library, network)2016-08-27HerbertValerioRiedel
primitive-simd42.0SIMD data types and functions (bsd3, data, library)2016-02-01JonasScholl
data-dispersal90.0Space-efficient and privacy-preserving data dispersal algorithms. (cryptography, data, lgpl, library)2014-10-05PeterRobinson
pretty-compact150.0Pretty-printing library (library, text)2017-08-19JeanPhilippeBernardy
equeue10.0Application level triggered, and edge triggered event multiqueues. (bsd3, concurrency, library)2019-01-01KevinCotrone, davean
broadcast-chan1270.0Closable, fair, single-wakeup channel type that avoids 0 reader space leaks. (bsd3, library, system)2020-05-29MerijnVerstraaten
keera-hails-reactivevalues321.5Haskell on Rails - Reactive Values (bsd3, development, library)2020-08-13IvanPerez, keera_studios_ci
smash-lens110.0Optics for the `smash` library (bsd3, data, library)2020-09-17topos
keera-hails-mvc-environment-gtk120.0Haskell on Gtk rails - Gtk-based global environment for MVC applications (bsd3, development, library)2020-08-13IvanPerez, keera_studios_ci
smash-optics20.0Optics for the `smash` library using `optics-core` (bsd3, data, library)2020-09-17topos
friday400.0A functional image processing library for Haskell. (graphics, lgpl, library)2016-12-17RaphaelJavaux, ThomasDuBuisson
servant-docs-simple590.0Generate endpoints overview for Servant API (library, mit, utility)2020-10-10HolmuskTechTeam
Shpadoinkle-router550.0A single page application rounter for Shpadoinkle based on Servant. (bsd3, library, web)2020-10-07fresheyeball
symantic-xml20.0Library for reading, validating and writing XML. (data-structures, gpl, library, text, xml)2020-08-17julm
coercible-subtypes140.0Coercible but only in one direction (bsd3, data, library)2020-04-08viercc
TeX-my-math200.0Render general Haskell math to LaTeX. Or: math typesetting with high signal-to-noise–ratio. (gpl, library, math, program)2020-06-17leftaroundabout
static00.0Type-safe and interoperable static values and closures (closure, control, gpl, library, static)2020-05-29infinity0
map-reduce-folds800.0foldl wrappers for map-reduce (bsd3, control, library)2020-09-27adamCS
lio652.0Labeled IO Information Flow Control Library (library, mit, security)2020-09-23AmitLevy, DavidMazieres, DeianStefan
fused-effects-optics10.0Bridge between the optics and fused-effects ecosystems. (bsd3, control, library)2020-07-10patrick_thomson
freer-indexed40.0Freer indexed monad for type-level resource-aware effectual operations. (bsd3, effects, library)2020-07-07epoberezkin

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