Mbot is a project mainly written in Haskell, based on the MIT license.
An IRC bot written in Haskell
An IRC logbot written in haskell. Run it using mbot <server> <port> <nick> <channel> <nickserv_password>
If you don't wish to identify to nickserv, the password parameter is optional. If the port is also 6667, you can leave that off if you are not identifying.