Snap (web framework)

Snap is a web development framework written in the Haskell programming language. 
Overview.
The Snap framework comprises:
Snap runs on both Windows and *nix platforms. Snap uses the Iteratee I/O model, As of version 1.0, its i/o is implemented with io-streams.
Usage.
It is used by Silk, JanRain, Racemetric, www.lpaste.net, SooStone Inc, and Group Commerce. Snap is also used as a lightweight, standalone Haskell server. The static site generator Hakyll uses Snap for its preview mode.