Package search

Name
DLs
Rating
Description
Tags
Last U/L
Maintainer
unpacked-maybe190.0An unpacked maybe data type (bsd3, development, library)2018-05-26chessai
church-maybe240.0Church encoded Maybe (bsd3, data, library)2018-08-01qfpl
unpacked-maybe-numeric250.0maybes of numeric values with fewer indirections (bsd3, data, library)2018-12-24chessai
primitive-maybe420.0Arrays of Maybes (array, bsd3, library)2019-01-08andrewthad, chessai
flat-maybe160.0Strict Maybe without space and indirection overhead (bsd3, data, library)2015-11-11AndrasKovacs
maybe-justify110.0Simple higher order function for Maybe (data, library, public-domain)2015-06-24taksuyu
generic-maybe370.0A generic version of Data.Maybe (bsd3, generics, library)2014-02-13JonathanFischoff
MaybeT350.0MaybeT monad transformer (bsd3, control, library)2008-12-21CaleGibbard, DonaldStewart, EricKidd
MaybeT-transformers180.0MaybeT monad transformer using transformers instead of mtl. (bsd3, control, library)2010-06-28ErikHesselink, SebastiaanVisser
MaybeT-monads-tf (deprecated in favor of monads-tf)210.0MaybeT monad transformer compatible with monads-tf (deprecated) (bsd3, control, deprecated, library)2011-06-22BenMillwood
utility-ht4242.0Various small helper functions for Lists, Maybes, Tuples, Functions (bsd3, data, library, list)2017-06-03HenningThielemann
exceptional1950.0Essentially the Maybe type with error messages. (bsd2, control, library)2015-07-22pharpend
both460.0Like Maybe, but with a different Monoid instance. (data, library, mit)2016-05-26barrucadu
option100.0A strict version of Maybe (data, library, mit)2016-01-02georgerogers42
data-easy310.0Consistent set of utility functions for Maybe, Either, List and Monoids. (bsd3, data, library)2016-07-26jcristovao
acme-cutegirl192.0Maybe gives you a cute girl (acme, gpl, library, program)2014-01-27MateuszKowalczyk
acme-cuteboy150.0Maybe gives you a cute boy (acme, library, program, public-domain)2018-01-25chessai
strict2760.0Strict data types and String IO. (bsd3, data, library, system)2008-03-07DonaldStewart, RomanLeshchinskiy
functor-combo2600.0Functor combinators with tries & zippers (bsd3, data, library)2015-05-04ConalElliott
ffmpeg-light3470.0Minimal bindings to the FFmpeg library. (bsd3, codec, library)2018-08-01AnthonyCowley
catamorphism560.0Exposes a Template Haskell function for generating catamorphisms. (bsd3, development, library)2018-04-15frerich
spoon880.0Catch errors thrown from pure computations. (bsd3, error-handling, library)2013-06-17DanielPeebles, LiyangHu
async-io-either362.0Could be useful (bsd3, error-handling, library)2017-02-21schalmers
partial-semigroup1612.0A partial binary associative operator (algebra, apache, library)2018-11-22chris_martin
zero880.0Semigroups with absorption (bsd3, data, library)2016-05-25DimitriSabadie
oi500.0Library for purely functional lazy interactions with the outer world. (bsd3, data, library, program)2016-03-27NobuoYamashita
STMonadTrans1800.0A monad transformer version of the ST monad (bsd3, library, monads)2017-02-09JosefSvenningsson
Compactable (deprecated in favor of compactable)280.0A generalization for containers that can be stripped of Nothing (bsd3, control, deprecated, library)2017-03-06fresheyeball
prim-spoon140.0Catch errors thrown from pure computations using primops. (bsd3, error-handling, library)2016-05-02lambdamichael
strict-base130.0Strict versions of base data types. (bsd3, data, library, system)2017-03-18minad
possible240.0Three valued Data.Maybe (bsd3, data, library)2015-01-13tolysz
batch-rename620.0Make Linux or MacOS do things like "rename *.mp3 *.mp4" (program, public-domain, system)2016-09-14uppet
truthful180.0Typeclass for truthfulness of values (data, library, public-domain)2015-09-07Shockk
ixmonad (deprecated in favor of effect-monad, type-level-sets)1060.0Embeds effect systems into Haskell using parameteric effect monads (bsd3, control, deprecated, library, monads)2014-05-15DominicOrchard
aeson-decode130.0Easy functions for converting from Aeson.Value (apache, json, library)2018-05-11chris_martin, Monoid_Mary
tasty-expected-failure1242.0Mark tasty tests as failure expected (library, mit, testing)2018-03-12JoachimBreitner
fclabels3182.25First class accessor labels implemented as lenses. (bsd3, data, lenses, library)2018-02-13AdamBergmark, ErikHesselink, SebastiaanVisser
language-spelling260.0Various tools to detect/correct mistakes in words (library, natural-language-processing, public-domain)2013-01-20FrancescoMazzoli
ecstasy360.0A GHC.Generics based entity component system. (bsd3, game, library)2018-05-15isovector
data-pprint600.0Prettyprint and compare Data values (bsd3, library, testing, text)2016-05-24PeterDivianszky, lspitzner, GaborPali, gombocarti
SVGFonts2490.0Fonts from the SVG-Font format (bsd3, graphics, library)2018-05-09BrentYorgey, JanBracker, RyanYates, TillmannVogt, jeffreyrosenbluth, bergey
acme-everything840.0Install everything. (acme, library, public-domain)2018-11-19quchen
dynamic-linker-template260.0Automatically derive dynamic linking methods from a data type. (bsd3, library, system)2016-10-11SylvainHenry
ReadArgs1440.0Simple command line argument parsing (bsd3, command-line, library, program)2016-12-08NoahEasterly
stt200.0A monad transformer version of the ST monad (control, library, mit)2016-11-06mckeankylej
validated-literals690.0Compile-time checking for partial smart-constructors (bsd3, data, library)2019-01-10MerijnVerstraaten
effect-monad242.0Embeds effect systems and program logics into Haskell using graded monads and parameterised monads (bsd3, control, library, monads)2018-01-24DominicOrchard
Limit120.0Wrapper for data that can be unbounded (data, library, mit)2011-12-24NateSoares
sample-frame390.0Handling of samples in an (audio) signal (bsd3, library, sound)2014-03-14HenningThielemann
bool-extras410.0A fold function for Bool (bsd3, data, library)2014-04-04TomLokhorst
acme-cofunctor382.0A Cofunctor is a structure from category theory dual to Functor (acme, bsd3, library)2017-05-13JasperVanDerJeugt
utc200.0A pragmatic time and date library. (data, library, mit, parsing, time)2015-06-17LarsPetersen
fn592.25A functional web framework. (library, web)2017-09-13DanielPatterson, LibbyHoracek
dunai1230.0Generalised reactive framework supporting classic, arrowized and monadic FRP. (bsd3, frp, library, reactivity)2018-11-04IvanPerez, keera_studios_ci, ChristinaZeller, keera_studios_ci_dunai
AC-BuildPlatform230.0Detect which OS you're running on. (bsd3, library, system)2011-06-08AndrewCoppin
OpenCLRaw170.0The OpenCL Standard for heterogenous data-parallel computing (bsd3, graphics, library)2009-08-18JeffersonHeard
binary-typed (deprecated)480.0Type-safe binary serialization (bsd2, data, deprecated, library, serialization)2015-12-19quchen
Cardinality160.0Measure container capacity. Use it to safely change container. (data, library)2010-01-20AndreySisoyev
knead330.0Repa-like array processing using LLVM JIT (bsd3, data-structures, library)2018-10-07HenningThielemann
language-c-inline490.0Inline C & Objective-C code in Haskell for language interoperability (bsd3, foreign, language, library)2017-07-30ManuelChakravarty
adaptive-containers280.0Self optimizing container types (bsd3, data, library)2009-04-11DonaldStewart
strict-base-types730.0Strict variants of the types provided in base. (bsd3, data, library)2018-02-11BasVanDijk, SimonMeier, phadej
Prelude570.0A Prelude module replacement (bsd3, library, prelude)2018-08-29HerbertValerioRiedel
emgm270.0Extensible and Modular Generics for the Masses (bsd3, generics, library)2011-09-21SeanLeather
cassy530.0A high level driver for the Cassandra datastore (bsd3, database, library)2014-09-02OzgunAtaman
ghcjs-websockets (deprecated)260.0Deprecated: use ghcjs-base's native websockets (deprecated, library, mit, web)2015-08-08jle
tbox130.0Transactional variables and data structures with IO hooks (concurrency, data, library)2010-04-02PeterRobinson
henet280.0Bindings and high level interface for to ENet v1.3.9 (ffi, library, mit, network)2013-09-04JohnEricson
dunai-core180.0Generalised reactive framework supporting classic, arrowized and monadic FRP. (Core library fork.) (bsd3, frp, library, reactivity)2018-10-21turion
kangaroo210.0Binary parsing with random access. (bsd3, library, parsing)2010-02-23StephenTetley
definitive-base230.0The base modules of the Definitive framework. (library, prelude)2014-11-11MarcCoiffier
sound-collage600.0Approximate a song from other pieces of sound (bsd3, program, sound)2017-06-12HenningThielemann
PCLT (deprecated)170.0Extension to Show: templating, catalogizing, languages, parameters, etc. (deprecated, library, text)2009-12-12AndreySisoyev

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