Gertrude - #ant.org channel bot
Gertrude is the #ant.org channel bot. She's fifth generation implemented in Cinch; previous incarnations were in RBot, MozBot, infobot, and straight perl.
Gertrude is built on cinch, and adds a number of features like two-factor authentication, mongo database-backed persistent configuration, and dynamic plugin management, plus a lot of Natural Language Processing features.
Gertrude comes with many custom plugins.
I can't imagine anyone wants to install their own gertrude, but if you do you'll need to install [mongo] and its ruby driver, and also the enju parser (which can be run on a different host, as gertrude does).
You'll also need Yubikeys from yubico in order to authenticate with the bot for admin tasks. To add users to the database, use getrude/tools/user.rb. You'll need a Yubico API for each user/yubikey combination you want gertrude to recognise.