Instantbird, the powerful instant messenger based on Mozilla technologies and Pidgin!
Instantbird is a multi-protocol Instant Messaging client. Using it, you can connect to all your different IM accounts: AIM, Gadu-Gadu, Google Talk, ICQ, MSN, QQ, XMPP, Yahoo!
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 (Intel), Linux
Download: Instantbird 0.1.3.1