Easily create simple regex powered Jabber bots.

Really simple jabber IM notifications.

Flapjack is highly scalable and distributed monitoring system. It understands the Nagios plugin format, and can easily be scaled from 1 server to 1000.

Twitter-to-Jabber gateway.

Engine for building your own agents, providing you base functionality for loading ontologies, communicating with other agents and parsing FIPA-ACL messages

Simple, distributed client-server communication using Jabber/XMPP.

blabber_mouth was developed by: markbates

A plugin for the Merb framework that allows you to send XMPP/Jabber notifications from Merb applications.

Whistle is a jabber bot that will follow SVN repositories and RSS/Atom feeds and notify you about the new changes

A Logger via xmpp