Notebot is a project mainly written in Ruby, it's free.
cinch-based notebook-bot for irc
developed from (old) 1.9.3 trunk, pre 1.9 may not work
for personal reasons this bot is mostly bilingual (english y español).
Notebot This is a ruby bot that keeps community notes. The entire community can search through dictionaries, which are edited by authors, and created/maintained by admins. admins also give author/admin access, and can ban users as necessary.
-- this project needs documentation, both online (here) and in the bot!