Haskell

Haskell is an advanced purely-functional programming language. An open-source product of more than twenty years of cutting-edge research, it allows rapid development of robust, concise, correct software. With strong support for integration with other languages, built-in concurrency and parallelism, debuggers, profilers, rich libraries and an active community, Haskell makes it easier to produce flexible, maintainable, high-quality software.

Learn Haskell

What is Haskell?
Try Haskell in your browser
Learning resources
Books & tutorials
Library documentation
School of Haskell, hosted by FP Complete

Use Haskell

Join the Community

Official discourse forum
Haskell on Reddit, Stack Overflow
Mailing lists, IRC channels
Wiki (how to contribute)
Communities and Activities Reports
Haskell in industry, research and education.
Planet Haskell https://wiki.haskell.org/wikiupload/7/7c/Rss16.png, The Monad.Reader
Local user groups

2025
- December
  - GHC 9.12.3 is released
  - GHC 9.14.1 is released
- September
  - GHC 9.10.3 is released
- July
  - GHC LTS Releases announced
- May
  - GHC 9.10.2 is released
- March
  - GHC 9.6.7 is released
  - GHC 9.12.2 is released
- January
  - Darcs 2.18.5 is released
2024
- December
  - Stackage: LTS 23 release for ghc-9.8 and Nightly now on ghc-9.10
- November
  - GHC 9.12.1 is released
- October
  - Darcs 2.18.4 is released (changelog)
  - GHC 9.8.3 is released
- July
  - GHC 9.6.6 is released
- May
  - GHC 9.10.1 is released
- February
  - GHC 9.8.2 is released

2023
- November
  - GHC 9.4.8 is released
- October
  - GHC 9.8.1 is released
- September
  - GHC 9.6.3 is released
- August:
  - GHC 9.4.6 is released
- June
  - Stackage LTS 21.0 is released with GHC 9.4.5
  - Stackage Nightly moves to GHC 9.6
- May
  - GHC 9.2.8 is released
  - GHC 9.6.2 is released
- April
  - GHC 9.4.5 is released

Upcoming Events

The 31st ACM SIGPLAN International Conference on Functional Programming (ICFP 2026): 2026-08-24 – 2026-08-29, Indianapolis, Indiana, USA

19th ACM SIGPLAN International Conference on Software Language Engineering (SLE 2026): 2026-07-02 – 2026-07-03, Rennes, France

Haskell Implementors' Workshop 2026: Co-located with ZuriHac 2026 and Haskell Ecosystem Workshop 2026; 2026-06-05, Rapperswil-Jona, Switzerland

Google Summer of Code: Start coding: (Frequently asked questions); 2026-05-25

Google Summer of Code: Community Bonding Period: (Frequently asked questions); 2026-05-01 – 2026-05-24

The Midlands Graduate School 2026 (MGS 2026): 2026-04-13 – 2026-04-17, Nottingham, UK

Google Summer of Code: contributor application deadline: (Frequently asked questions); 2026-03-31

BOB 2026: Conference; “What happens if we simply use what’s best?”; 2026-03-13, Berlin, Germany

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Recent Events

North American Haskell Hackathon in New York (AmeriHac 2026): 2026-02-07 – 2026-02-08, New York City, New York, USA

Trends in Functional Programming (TFP 2026): Co-located with TFPIE 2026; 2026-01-27 – 2026-01-29, University of Southern Denmark in Odense, Denmark

Trends in Functional Programming in Education (TFPIE 2026): Co-located with TFP 2026; 2026-01-26, University of Southern Denmark in Odense, Denmark