wxHaskell is a middle-level GUI library.2 Several experimental high-level GUI library approaches are implemented on wxHaskell:
In contrast, the high-level GUI libraries FG and Grapefruit are implemented on the middle-level Gtk2Hs, which is based on GTK2.
All of these high-level libraries are experimental, using advanced mathematics concepts in their approach (see Arrow (computer science)).
Leijen, Daan (September 22, 2004). "WxHaskell: A portable and concise GUI library for haskell". Proceedings of the 2004 ACM SIGPLAN workshop on Haskell. pp. 57–68. doi:10.1145/1017472.1017483. ISBN 1-58113-850-4. 1-58113-850-4 ↩
Haskell wiki: Libraries and tools/GUI libraries https://wiki.haskell.org/Libraries_and_tools/GUI_libraries ↩