Haskell - Important Libraries

This page summarizes the projects mentioned and recommended in the original post on reddit.com/r/haskell

Our great sponsors
  • SonarQube - Static code analysis for 29 languages.
  • Scout APM - Less time debugging, more time building
  • SaaSHub - Software Alternatives and Reviews
  • time

    A time library (by haskell)


  • text

    Haskell library for space- and time-efficient operations over Unicode text. (by haskell)


  • SonarQube

    Static code analysis for 29 languages.. Your projects are multi-language. So is SonarQube analysis. Find Bugs, Vulnerabilities, Security Hotspots, and Code Smells so you can release quality code every time. Get started analyzing your projects today for free.

  • network

    Low-level networking interface (by haskell)


  • filepath



  • directory

    Platform-independent library for basic file system operations


  • deepseq

    Deep evaluation of data structures


  • containers

    Assorted concrete container types


  • Scout APM

    Less time debugging, more time building. Scout APM allows you to find and fix performance issues with no hassle. Now with error monitoring and external services monitoring, Scout is a developer's best friend when it comes to application development.

  • bytestring

    An efficient compact, immutable byte string type (both strict and lazy) suitable for binary or 8-bit character data.


  • attoparsec

    A fast Haskell library for parsing ByteStrings


  • post-rfc

    Blog post previews in need of peer review

    State of the Haskell Ecosystem lists libraries for many of its domains.

  • ihp

    🔥 The fastest way to build type safe web apps. IHP is a new batteries-included web framework optimized for longterm productivity and programmer happiness

    And if you want to land a Haskell job, I'd say becoming really proficient with any stack would be more important. E.g. IHP might not be around in five years but you can use it to make web/backend projects even for clients who don't care about Haskell, and if I was hiring a backend engineer I would happily hire someone proficient with IHP even though my actual Haskell stack would be entirely different.

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

Suggest a related project

Related posts