Vomak
Vomak is a very simple IRC bot with a few basic features. It connects to an IRC server and joins a channel. Then it waits for commands like ?? keyword. This is a built-in help system. Additionally, the bot creates a socket (Unix Domain Socket) where it accepts directly IRC messages and a few special commands, see Socket Communication.
More information and the source code for download can be found at http://www.uvena.de/vomak/.
Note
Vomak is dead. Please don't use it anymore or drop me a mail if you want to continue developing it.