When I heard about Jabber XML, I thought the name sounded cool so I looked into it. Turns out more than the name is cool. Jabber XML is an instant messaging technology that relies heavily on XML. At its core, Jabber defines an API and abstraction layer based on XML to provide a medium for applications to exchange data. So what does that mean? Well, you can read more about it at the Jabber site:

Jabber http://www.jabber.com/