Top Haskell GitHub Repositories & Open Source Projects (2026)

A Haskell datastructure for working with locations in trees or forests.

Machine learning library for Haskell

A URL package for Haskell

Morphology for Koine Greek, based on Functional Morphology

Program Expression Graphs for Equality Saturation

This is the turbinado.org website

An automatic prover of termination of logic programs and narrowing

A type-checker for the λΠ-modulo calculus.

A compiler for C-Minus written in Haskell that targets an architecture called TM. I wrote this for a Compilers course. It could stand to be refactored in a few places, but overall I'm pretty proud of it.

Simple thread management

Haskell bindings for TagLib (so you can read and write id3 tags)

Experimental Haskell blog publishing.

A Haskell library for generating new names without threading state.

Barak's Forward Automatic Differentiation

A pure Haskell interface to the Tokyo Tyrant database server via its binary protocol

Modular haskell hirc bot

husky is a command line shell for UNIX-like OS written in haskell.

Haskell leap second table with leap seconds announced at library release time.

UNIX deamon writing utilities for Haskell

A link between Happstack and FastCGI