An optimizing compiler for Haskell, written in Haskell. Includes extensions for concurrency and heap and time profiling. [Open Source, BSD-like]

An interpreter for Haskell which runs on almost any platform. Primarily used for teaching.

A Haskell extension for parallel programming built on top of the Glasgow Haskell compiler (GHC). Parallelism is identified using annotations (generally evaluation strategies), that are defined using only two extra primitives: par and seq.

A compiler and interactive system for Haskell 1.4, unsupported for two years now.

Object-oriented Haskell extension, using a preprocessor, supports a form of inheritance via extended class and instance declarations. Descriptions, documents, source download, links.

Makes Mondrian, light Haskell version to interoperate with other languages in OO environments; runs on .NET (old version for JVM), supports ASP.NET, to embed functional code in webpages with C#. Has version of Glasgow Haskell Compiler using Mondrian f...

A Haskell 98 compiler.

Extension of Hugs98 Haskell interpreter, for interoperation between Haskell and .NET and its framework; can instantiate and use .NET objects in Haskell, and vice versa, call and use Haskell functions from any .NET language.

Object Haskell: Haskell conservatively extended with subtyping, monadic objects.

Polytypic programming language; source files for compiler written in Haskell that compiles PolyP-code to Haskell; library of polytypic functions written in PolyP, some examples, documents, downloads.