Snap is a simple and fast web development framework and server written in
Haskell. For more information or to download the latest version, you can
visit the Snap project website at http://snapframework.com/.

The Snap HTTP server is a high performance web server library written in
Haskell. Together with the snap-core library upon which it depends, it
provides a clean and efficient Haskell programming interface to the HTTP
protocol.

Homepage:
http://hackage.haskell.org/package/snap-server
