Manderlbot is an Erlang written IRC bot and possibly an IRC client.
You can have a look at the SourceForge project management page: Manderlbot Project Page
The latest release is manderlbot-0.5.1
The fun part is in writing new behaviours for the bot. People wanting to contribute can help increasing the standard behaviour library. We are accepting behaviours. So, if you want to have fun with us, do not hesitate starting hacking Manderlbot :-)
Send us your patches at: manderlbot@erlang-fr.org