Source: mobber Project
Story Link: http://freshmeat.net/projects/mobber/?branch_id=67637&release_id=242997

The mobber project has announced its initial release: "Mobber is a mobile communicator based on the Jabber/XMPP protocol for cell phones with GPRS. It is written in Java (MID Profile Version 1.0), and should work on any device that supports Java and sockets."