CGI Library
Helps you build web applications in Haskell.
url: www.cse.ogi.edu/~erik/Personal/cgi.htm
A Compiler Toolkit in Haskell
A set of modules for creating compilers in Haskell. [Open Source, GPL]
url: www.cse.unsw.edu.au/~chak/haskell/ctk/
FranTk
A high level library for building GUIs in Haskell. It provides good support for developing complex dynamic systems, and is built on top of Tcl/Tk. [Open Source, BSD-like]
url: haskell.cs.yale.edu/FranTk/
Fudgets
Graphical User Interface toolkit for Haskell and X Window system. [Free non-commercial use]
url: www.md.chalmers.se/Cs/Research/Functional/Fudgets/
Gtk+Haskell
Bindings for GTK+ for Haskell.
url: www.cse.unsw.edu.au/~chak/haskell/gtk/
Haggis
Multi-threaded, concurrent user interface framework for Haskell, X Window.
url: www.dcs.gla.ac.uk/fp/software/haggis/
HaskellGnome
Haskell Gnome and ORBit effort and bindings
url: www.cse.unsw.edu.au/~chak/haskell/gnome/
HaSQL Project
An ODBC interface to Haskell implemented using Green Card.
url: members.tripod.com/~sproot/hasql.htm
HGL Graphics Library
A portable graphics library for both X11 and Win32. [Open Source, BSD-like]
url: haskell.org/graphics/
HOpenGL
An OpenGL/GLUT binding for Haskell. [Open Source, LGPL]
url: haskell.org/HOpenGL/
Java VM Bridge
A bridge to the Java virtual machine via JNI for Haskell. [Open Source, LGPL]
url: sourceforge.net/projects/jvm-bridge/
MySQL-HS
An interface to the database MySQL for the programming language Haskell. [Open Source, LGPL]
url: www.volker-wysk.de/mysql-hs/
Regular expressions in Haskell
Native Haskell implementation of polymorphic regular expressions. The regexps contains most of the features found in Perl.
url: www.dcs.gla.ac.uk/~meurig/regexp/
TclHaskell
Useful for building graphical user interfaces through the Tcl/Tk. [Open Source, BSD-like]
url: www.dcs.gla.ac.uk/~meurig/TclHaskell/