PSI is a great jabber client with support for almost all native jabberd features. It has been programed in QT meaning it is available for Linux, Windows and OSX. Here is a peep at the change log.
For the extensive list of new features, and exisitng features, please click read more.
Screenshot: PSI Jabber Client:: Screenshots
Download: Windows
Download: MacOS X
Download: Source Code
News source: PSI Jabber Client
This is BETA software!, please use caution when installing it on your system
