wxHaskell is a portable and native GUI library for Haskell.  It is built
on top of wxWidgets - a comprehensive C++ library that is portable
across all major GUI platforms; including GTK, Windows, X11, and MacOS
X.  This version works with wxWidgets 2.8 and 2.9.

WWW:	http://haskell.org/haskellwiki/WxHaskell