Generic Haskell
Generic Haskell   Given a file with definitions of type-indexed functions, kind-indexed kinds, or type-indexed data types, the Generic Haskell compiler generates Haskell code for the instances of these functions on the data types that occur in the input file.
Authors / Maintainers   Dave Clarke, Ralf Hinze, Johan Jeuring, Andres Löh, and Jan de Wit
Haskell Utrecht Tools (HUT)
Haskell Utrecht Tools   A collection of packages including pretty-printing combinators, error-correcting parser combinators and an attribute grammar system.
Authors / Maintainers   Arie Middelkoop, Jeroen Fokker, and Alexey Rodriguez
PolyP: Polytypic programming
Polytypic programming   PolyP extends a functional language (a subset of Haskell) with a construct for writing polytypic functions. A polytypic function is a function that is defined by induction on the structure of user-defined datatypes.
Authors   Johan Jeuring and Patrik Jansson


No longer maintained at Utrecht

ActiveHaskell (archived July 2006)   ActiveHaskell is the collective name for all Haskell components that allow interaction with the COM/ActiveX framework.
Authors   Erik Meijer and Daan Leijen
LRC: The Attribute Grammar System
The attribute grammar system LRC   LRC can be used to generate efficient, incremental higher order attribute grammar evaluators.
Authors   Matthijs Kuiper, João Saraiva and Doaitse Swierstra
Parsec: Parser Combinators
Parsec: Parser Combinators   The combinators are distrubuted as part of the GHC distribution.
Authors   Daan Leijen
Stratego   Stratego is a language for the specification of program transformation systems based on the paradigm of rewriting strategies.
Authors   Eelco Visser
Tiger in Stratego
Tiger in Stratego   An implementation of a compiler for Andrew Appel's Tiger language and other transformations on Tiger programs. The implementation has been developed as a case study in the use of transformation techniques in compilation and is used in teaching program transformation.
Authors   Eelco Visser 
wxHaskell: Haskell GUI Library
wxHaskell: Haskell GUI Library   wxHaskell is a portable and native GUI library for Haskell. The goal of the project is to provide an industrial strength GUI library for Haskell, but without the burden of developing (and maintaining) one ourselves.
Authors   Daan Leijen
XT   XT is a bundle of program transformation tools including Stratego, the SDF Grammar base, and tools for grammar recovery.
Authors   Merijn de Jonge, Eelco Visser, Joost Visser