Instantbird, the powerful instant messenger based on Mozilla technologies and Pidgin!
nstantbird is a multi-protocol Instant Messaging client. Using it, you can connect to all your different IM accounts.
It uses the Mozilla rendering engine to display IMs, and the Pidgin libpurple to connect to the different networks.
Instantbird is a free and open source software. So you are free to use, distribute and modify it.
Cross Platform
Windows, Mac OS X, Linux
Developer Friendly
Add-ons can be written easily and shared for everyone
Connect on all networks
A single program for chatting on all famous networks!
Download: http://www.instantbird.com/download.html