Gaeth is OpenSource Jabber/XMPP bot for general usage. Currently it supports:
Google PageRank checking
URL shortening
displaying random stupid quotes about Satan (Polish only)
showing exchange rates from Polish National Bank
showing scores in Lotto lottery
language files (just Perl scripts defining specific variables) - currently PL, EN, CS and RU
...and many more ;)
Whole code is written in Perl.
Gaeth is licensed with
Project page at SourceForge.net