Package search

Name
DLs
Rating
Description
Tags
Last U/L
Maintainer
unpacked-maybe130.0An unpacked maybe data type (bsd3, development, library)2018-05-26chessai
church-maybe300.0Church encoded Maybe (bsd3, data, library)2018-08-01qfpl
unpacked-maybe-numeric240.0maybes of numeric values with fewer indirections (bsd3, data, library)2018-12-24chessai
primitive-maybe50.0Arrays of Maybes (array, bsd3, library)2019-01-08andrewthad, chessai
flat-maybe210.0Strict Maybe without space and indirection overhead (bsd3, data, library)2015-11-11AndrasKovacs
maybe-justify160.0Simple higher order function for Maybe (data, library, public-domain)2015-06-24taksuyu
generic-maybe1250.0A generic version of Data.Maybe (bsd3, generics, library)2014-02-13JonathanFischoff
MaybeT790.0MaybeT monad transformer (bsd3, control, library)2008-12-21CaleGibbard, DonaldStewart, EricKidd
MaybeT-transformers390.0MaybeT monad transformer using transformers instead of mtl. (bsd3, control, library)2010-06-28ErikHesselink, SebastiaanVisser
MaybeT-monads-tf (deprecated in favor of monads-tf)520.0MaybeT monad transformer compatible with monads-tf (deprecated) (bsd3, control, deprecated, library)2011-06-22BenMillwood
utility-ht2652.0Various small helper functions for Lists, Maybes, Tuples, Functions (bsd3, data, library, list)2017-06-03HenningThielemann
exceptional1730.0Essentially the Maybe type with error messages. (bsd2, control, library)2015-07-22pharpend
both440.0Like Maybe, but with a different Monoid instance. (data, library, mit)2016-05-26barrucadu
option180.0A strict version of Maybe (data, library, mit)2016-01-02georgerogers42
data-easy720.0Consistent set of utility functions for Maybe, Either, List and Monoids. (bsd3, data, library)2016-07-26jcristovao
acme-cutegirl372.0Maybe gives you a cute girl (acme, gpl, library, program)2014-01-27MateuszKowalczyk
acme-cuteboy320.0Maybe gives you a cute boy (acme, library, program, public-domain)2018-01-25chessai
strict2530.0Strict data types and String IO. (bsd3, data, library, system)2008-03-07DonaldStewart, RomanLeshchinskiy
partial-semigroup872.0A partial binary associative operator (algebra, apache, library)2019-02-14chris_martin
functor-combo2170.0Functor combinators with tries & zippers (bsd3, data, library)2015-05-04ConalElliott
ffmpeg-light5610.0Minimal bindings to the FFmpeg library. (bsd3, codec, library)2018-08-01AnthonyCowley
catamorphism2380.0Exposes a Template Haskell function for generating catamorphisms. (bsd3, development, library)2018-04-15frerich
spoon760.0Catch errors thrown from pure computations. (bsd3, error-handling, library)2013-06-17DanielPeebles, LiyangHu
async-io-either1202.0Could be useful (bsd3, error-handling, library)2017-02-21schalmers
zero180.0Semigroups with absorption (bsd3, data, library)2016-05-25DimitriSabadie
oi1140.0Library for purely functional lazy interactions with the outer world. (bsd3, data, library, program)2016-03-27NobuoYamashita
STMonadTrans3730.0A monad transformer version of the ST monad (bsd3, library, monads)2017-02-09JosefSvenningsson
Compactable (deprecated in favor of compactable)860.0A generalization for containers that can be stripped of Nothing (bsd3, control, deprecated, library)2017-03-06fresheyeball
prim-spoon160.0Catch errors thrown from pure computations using primops. (bsd3, error-handling, library)2016-05-02lambdamichael
SVGFonts6890.0Fonts from the SVG-Font format (bsd3, graphics, library)2019-01-29BrentYorgey, JanBracker, RyanYates, TillmannVogt, jeffreyrosenbluth, bergey
strict-base230.0Strict versions of base data types. (bsd3, data, library, system)2017-03-18minad
batch-rename1290.0Make Linux or MacOS do things like "rename *.mp3 *.mp4" (program, public-domain, system)2016-09-14uppet
truthful200.0Typeclass for truthfulness of values (data, library, public-domain)2015-09-07Shockk
ixmonad (deprecated in favor of effect-monad, type-level-sets)1360.0Embeds effect systems into Haskell using parameteric effect monads (bsd3, control, deprecated, library, monads)2014-05-15DominicOrchard
aeson-decode310.0Easy functions for converting from Aeson.Value (apache, json, library)2018-05-11chris_martin, Monoid_Mary
possible470.0Three valued Data.Maybe (bsd3, data, library)2019-02-17tolysz
tasty-expected-failure1542.0Mark tasty tests as failure expected (library, mit, testing)2018-03-12JoachimBreitner
fclabels11832.25First class accessor labels implemented as lenses. (bsd3, data, lenses, library)2018-02-13AdamBergmark, ErikHesselink, SebastiaanVisser
language-spelling580.0Various tools to detect/correct mistakes in words (library, natural-language-processing, public-domain)2013-01-20FrancescoMazzoli
ecstasy1490.0A GHC.Generics based entity component system. (bsd3, game, library)2018-05-15isovector
data-pprint2340.0Prettyprint and compare Data values (bsd3, library, testing, text)2016-05-24PeterDivianszky, lspitzner, GaborPali, gombocarti
acme-everything1490.0Install everything. (acme, library, public-domain)2018-11-19quchen
dynamic-linker-template880.0Automatically derive dynamic linking methods from a data type. (bsd3, library, system)2016-10-11SylvainHenry
ReadArgs1320.0Simple command line argument parsing (bsd3, command-line, library, program)2016-12-08NoahEasterly
stt210.0A monad transformer version of the ST monad (control, library, mit)2016-11-06mckeankylej
validated-literals250.0Compile-time checking for partial smart-constructors (bsd3, data, library)2019-01-10MerijnVerstraaten
effect-monad1202.0Embeds effect systems and program logics into Haskell using graded monads and parameterised monads (bsd3, control, library, monads)2018-01-24DominicOrchard
Limit280.0Wrapper for data that can be unbounded (data, library, mit)2011-12-24NateSoares
sample-frame440.0Handling of samples in an (audio) signal (bsd3, library, sound)2014-03-14HenningThielemann
bool-extras880.0A fold function for Bool (bsd3, data, library)2014-04-04TomLokhorst
acme-cofunctor442.0A Cofunctor is a structure from category theory dual to Functor (acme, bsd3, library)2017-05-13JasperVanDerJeugt
utc260.0A pragmatic time and date library. (data, library, mit, parsing, time)2015-06-17LarsPetersen
fn2742.25A functional web framework. (library, web)2017-09-13DanielPatterson, LibbyHoracek
dunai1390.0Generalised reactive framework supporting classic, arrowized and monadic FRP. (bsd3, frp, library, reactivity)2018-11-04IvanPerez, keera_studios_ci, ChristinaZeller, keera_studios_ci_dunai
AC-BuildPlatform640.0Detect which OS you're running on. (bsd3, library, system)2011-06-08AndrewCoppin
OpenCLRaw400.0The OpenCL Standard for heterogenous data-parallel computing (bsd3, graphics, library)2009-08-18JeffersonHeard
binary-typed (deprecated)2320.0Type-safe binary serialization (bsd2, data, deprecated, library, serialization)2015-12-19quchen
Cardinality290.0Measure container capacity. Use it to safely change container. (data, library)2010-01-20AndreySisoyev
knead1100.0Repa-like array processing using LLVM JIT (bsd3, data-structures, library)2018-10-07HenningThielemann
language-c-inline2220.0Inline C & Objective-C code in Haskell for language interoperability (bsd3, foreign, language, library)2017-07-30ManuelChakravarty
adaptive-containers780.0Self optimizing container types (bsd3, data, library)2009-04-11DonaldStewart
strict-base-types1560.0Strict variants of the types provided in base. (bsd3, data, library)2018-02-11BasVanDijk, SimonMeier, phadej
Prelude850.0A Prelude module replacement (bsd3, library, prelude)2018-08-29HerbertValerioRiedel
emgm750.0Extensible and Modular Generics for the Masses (bsd3, generics, library)2011-09-21SeanLeather
cassy1390.0A high level driver for the Cassandra datastore (bsd3, database, library)2014-09-02OzgunAtaman
ghcjs-websockets (deprecated)720.0Deprecated: use ghcjs-base's native websockets (deprecated, library, mit, web)2015-08-08jle
tbox340.0Transactional variables and data structures with IO hooks (concurrency, data, library)2010-04-02PeterRobinson
henet790.0Bindings and high level interface for to ENet v1.3.9 (ffi, library, mit, network)2013-09-04JohnEricson
dunai-core340.0Generalised reactive framework supporting classic, arrowized and monadic FRP. (Core library fork.) (bsd3, frp, library, reactivity)2018-10-21turion
kangaroo380.0Binary parsing with random access. (bsd3, library, parsing)2010-02-23StephenTetley
definitive-base600.0The base modules of the Definitive framework. (library, prelude)2014-11-11MarcCoiffier
pipes-ordered-zip280.0merge two ordered Producers into a new Producer (bioinformatics, bsd3, library)2019-03-05stephan_schiffels
sound-collage650.0Approximate a song from other pieces of sound (bsd3, program, sound)2017-06-12HenningThielemann
PCLT (deprecated)250.0Extension 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