Lambdabot is an irc bot written over several years by those on the #haskell irc channel.

provided plugins:

[irc] lets lambdabot connect to irc.

[localtime] check user's local time.

[log] log irc channels.

[topic] modify channel topics.

this package provides a library for the haskell programming language. see http://www.haskell.org/ for more information on haskell.