A Google Talk client to call your Gmail contacts for free
Multi-protocol instant messaging for everyone
A free Communication program for Windows
Add multiple messaging clients in one simple interface
Instant messaging as free and open as it should be
Access Google Talk and even VoIP on even the simplest phone
Alternative instant messaging
A full version social & communication app for Android, by Daniel Gultsch
Chat client with a built-in whiteboard
AstraChat is a lightweight Jabber (XMPP) stand alone client application that connects directly to your XMPP server without any proxy server in between.
AstraChat is a standalone and lightweight Jabber (XMPP) client application with VOIP calling that connects directly to your XMPP server without any proxies in-between.