Haskell packages
1,000 in Packages and libraries, most used first. Page 2 of 5.
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happstack-server Happstack Server provides an HTTP server and a rich set of functions for routing requests, handling query parameters, generating… - skylighting Skylighting is a syntax highlighting library with support for over one hundred languages.
- crypto-random
- call-stack
- base-unicode-symbols This package defines new symbols for a number of functions, operators and types in the base package.
- time-locale-compat
- time
- fail
- crypto-cipher-types Generic cryptography cipher types
- regex-pcre-builtin
- authenticate
- monad-loops
- test-framework
- http-date
- hourglass Simple time library focusing on simple but powerful and performant API The backbone of the library are the Timeable and Time type classes.
- aeson-pretty A JSON pretty-printing library compatible with aeson as well as a command-line tool to improve readability of streams of JSON data.
- foundation
- pandoc-citeproc The pandoc-citeproc library supports automatic generation of citations and a bibliography in pandoc documents using the Citation Style…
- iproute
- auto-update
- megaparsec This is an industrial-strength monadic parser combinator library.
- hslogger
- uuid
- HsOpenSSL HsOpenSSL is an OpenSSL binding for Haskell. It can generate RSA and DSA keys, read and write PEM files, generate message digests, sign…
- pipes
- postgresql-simple
- cabal2nix Convert Cabal files into Nix build instructions. Users of Nix can install the latest version by running
- doctest doctest is a tool that checks examples and properties in Haddock comments.
- Glob A library for globbing: matching patterns against file paths.
- warp-tls SSLv1 and SSLv2 are obsoleted by IETF. We should use TLS 1.2 (or TLS 1.1 or TLS 1.0 if necessary). HTTP/2 can be negotiated by ALPN.
- system-fileio Consistent filesystem interaction across GHC versions (deprecated package).
- crypto-pubkey
- fay Fay is a proper subset of Haskell which is type-checked with GHC, and compiled to JavaScript.
- hashtables This package provides a couple of different implementations of mutable hash tables in the ST monad, as well as a typeclass abstracting…
- snap This is the top-level package for the official Snap Framework libraries.
- ghc-lib-parser
- hamlet
- zlib-bindings
- stylish-haskell A Haskell code prettifier.
- persistent-postgresql
- haddock-library
- cabal-doctest As of now (end of 2024), there isn't cabal doctest command. Yet, to properly work, doctest needs plenty of configuration.
- crypto-numbers
- constraints GHC 7.4 gave us the ability to talk about ConstraintKinds. They stopped crashing the compiler in GHC 7.6. This package provides a…
- fingertree
- fsnotify Cross platform library for file creation, modification, and deletion notification.
- word8
- ats-pkg A collection of scripts to simplify building ATS projects.
- byteorder
- th-lift
- pretty-show
- parsers This library provides convenient combinators for working with and building parsing combinator libraries. Given a few simple instances, e.g.
- lifted-async This package provides IO operations from async package lifted to any instance of MonadBase or MonadBaseControl.
- stm-chans Additional types of channels for STM.
- xml-types
- math-functions This library contain collection of various utilities for numerical computing.
- unbounded-delays The threadDelay and timeout functions from the base library use the bounded Int type for specifying the delay or timeout period.
- hledger The command-line interface for the hledger accounting system.
- clientsession Achieves security through AES-CTR encryption and Skein-MAC-512-256 authentication.
- haddock This is Haddock, a tool for automatically generating documentation from annotated Haskell source code.
- resource-pool A high-performance striped pooling abstraction for managing flexibly-sized collections of resources such as database connections.
- strict
- cipher-rc4
- haskell-src-meta The translation from haskell-src-exts abstract syntax to template-haskell abstract syntax isn't 100% complete yet.
- microlens
- th-orphans Orphan instances for TH datatypes. In particular, instances for Ord and Lift, as well as a few missing Show / Eq.
- xss-sanitize run untrusted HTML through Text.HTML.SanitizeXSS.sanitizeXSS to prevent XSS attacks.
- bytestring-builder
- vector-binary-instances
- stringsearch
- silently Prevent or capture writing to stdout, stderr, and other handles.
- unix
- acid-state
- sbv Express properties about Haskell programs and automatically prove them using SMT (Satisfiability Modulo Theories) solvers.
- ad Forward-, reverse- and mixed- mode automatic differentiation combinators with a common API.
- diagrams-lib Diagrams is a flexible, extensible EDSL for creating graphics of many types.
- language-javascript Parses Javascript into an Abstract Syntax Tree (AST). Initially intended as frontend to hjsmin.
- hxt
- propellor Propellor ensures that the system it's run in satisfies a list of properties, taking action as necessary when a property is not yet met.
- publicsuffixlist
- terminfo
- io-streams Overview The io-streams library contains simple and easy-to-use primitives for I/O using streams.
- servant
- cairo
- regex-compat One module compat layer over regex-posix to replace Text.Regex. See also for more information.
- classy-prelude
- charset Fast unicode character sets based on complemented PATRICIA tries.
- basement
- http-api-data This package defines typeclasses used for converting Haskell data types to and from HTTP API data. Please see README.md
- Diff Implementation of the standard diff algorithm in Haskell. Time complexity is O(ND) (input length * number of differences).
- OpenGL A Haskell binding for the OpenGL graphics system (GL, version 4.6) and its accompanying utility library (GLU, version 1.3).
- foldl This library provides strict left folds that stream in constant memory, and you can combine folds using Applicative style to derive new…
- llvm-general
- glib
- quickcheck-instances
- hledger-lib This library contains hledger's core functionality. It is used by most hledger* packages so that they support the same command line…
- pointed Pointed and copointed data.
- ListLike Generalized support for list-like structures in Haskell. The ListLike module provides a common interface to the various Haskell types…
- keys This package provides a bunch of ad hoc classes for accessing parts of a container.
- aws Bindings for Amazon Web Services (AWS), with the aim of supporting all AWS services.
- json
- hpack
- amazonka-core
- tasty-hunit
- reducers Semigroups, specialized containers and a general map/reduce framework.
- hostname
- vector-th-unbox A Template Haskell deriver for unboxed vectors, given a pair of coercion functions to and from some existing type with an Unbox instance.
- errors
- mime-mail Hackage documentation generation is not reliable.
- hledger-web A simple web user interface for the hledger accounting system, providing a more modern UI than the command-line or terminal interfaces.
- microlens-th
- cassava cassava is a library for parsing and encoding RFC 4180 compliant comma-separated values (CSV) data, which is a textual line-oriented…
- yesod-test
- path-pieces Hackage documentation generation is not reliable.
- vector-space
- fclabels This package provides first class labels that can act as bidirectional record fields.
- OpenGLRaw OpenGLRaw is a raw Haskell binding for the OpenGL 4.6 graphics system and lots of OpenGL extensions.
- hedis Redis is an open source, advanced key-value store. It is often referred to as a data structure server since keys can contain strings…
- hmatrix
- hint This library defines an Interpreter monad. It allows to load Haskell modules, browse them, type-check and evaluate strings with Haskell…
- servant-server A family of combinators for defining webservices APIs and serving them. You can learn about the basics in the tutorial..
- tasty-quickcheck
- MissingH
- yesod-static
- easy-file Cross-platform File handling for Unix/Mac/Windows
- hinotify This library provides a wrapper to the Linux Kernel's inotify feature, allowing applications to subscribe to notifications when a file is…
- network-info
- email-validate
- fb This package exports bindings to Facebook's APIs (see. Does not have any external dependencies and tries…
- skein
- th-expand-syns
- dhall
- time-compat
- psqueues The psqueues package provides Priority Search Queues in three different flavors.
- gtk2hs-buildtools
- clash-ghc Clash is a functional hardware description language that borrows both its syntax and semantics from the functional programming language…
- graphviz This library provides bindings for the Dot language used by the Graphviz suite of programs for visualising graphs…
- fgl
- heist Heist is a powerful template system that supports both HTML5 and XML.
- idris Idris is a general purpose language with full dependent types. It is compiled, with eager evaluation.
- gitit Gitit is a wiki backed by a git, darcs, or mercurial filestore.
- bytes Sharing code for serialization between binary and cereal.
- ghc-lib-parser-ex
- test-framework-hunit
- MemoTrie
- logict Adapted from the paper Backtracking, Interleaving, and Terminating Monad Transformers by Oleg Kiselyov, Chung-chieh Shan, Daniel P.
- recursion-schemes Many recursive functions share the same structure, e.g. pattern-match on the input and, depending on the data constructor, either recur on…
- hasql Root of the "hasql" ecosystem. This library provides connection management, execution of queries and mapping of parameters and results.
- cabal-debian
- gloss
- certificate
- rattletrap Warning: This package is not maintained anymore. Rattletrap parses and generates Rocket League replays.
- css-text
- HTF The Haskell Test Framework (HTF for short) lets you define and organize unit tests, QuickCheck properties, and black box tests in an easy…
- GLUT A Haskell binding for the OpenGL Utility Toolkit, a window system independent toolkit for writing OpenGL programs.
- gtk
- base
- filepath This package provides functionality for manipulating FilePath values, and is shipped with GHC.
- retry This package exposes combinators that can wrap arbitrary monadic actions.
- dns
- active Active abstraction for animated things with finite start and end times.
- derive Data.Derive is a library and a tool for deriving instances for Haskell programs.
- th-lift-instances Most data types in the haskell platform do not have Lift instances.
- yesod-persistent
- MonadCatchIO-transformers
- monad-par
- hindent Extensible Haskell pretty printer. Both a library and an executable.
- network-conduit
- hOpenPGP
- postgresql-libpq
- X11 A Haskell binding to the X11 graphics library. The binding is a direct translation of the C binding; for documentation of these calls…
- unliftio
- Agda Agda is a dependently typed functional programming language: It has inductive families, which are similar to Haskell's GADTs, but they can…
- monoid-extras
- test-framework-quickcheck2
- deepseq
- xmobar
- relational-query
- haskell-lexer
- madlang Madlang is a text templating language written in Haskell, meant to explore computational creativity and generative literature.
- cabal-rpm This package provides a RPM packaging tool for Haskell Cabal-based packages.
- scotty A Haskell web framework inspired by Ruby's Sinatra, using WAI and Warp.
- blaze-builder-conduit
- ieee754
- appar A simple applicative parser in Parsec style
- haskoin-store-data
- c2hs C->Haskell assists in the development of Haskell bindings to C libraries.
- comonad-transformers This package has been merged into comonad 4.0
- mighttpd2
- safecopy
- hexpat
- skylighting-core Skylighting is a syntax highlighting library. It derives its tokenizers from XML syntax definitions used by KDE's KSyntaxHighlighting…
- persistent-mongoDB
- hjsmin Reduces size of javascript files by stripping out extraneous whitespace and other syntactic elements, without changing the semantics.
- clash-lib Clash is a functional hardware description language that borrows both its syntax and semantics from the functional programming language…
- diagrams-svg This package provides a modular backend for rendering diagrams created with the diagrams EDSL to SVG files.
- concurrent-output Lets multiple threads and external processes concurrently output to the console, without it getting all garbled up.
- hackage-security
- diagrams-core The core modules underlying diagrams, an embedded domain-specific language for compositional, declarative drawing.
- language-c Language C is a Haskell library for the analysis and generation of C code.
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