Languages: English & German
Compatibility: Windows (XP and newer), Linux, MAC OS X, FreeBSD
License: Freeware and payware (depends what you want).
Author's description:
TeamSpeak 3 continues the legacy of the original TeamSpeak communication system previously offered in TeamSpeak Classic (1.5) and TeamSpeak 2. TeamSpeak 3 is not merely an extension of its predecessors but rather a complete rewrite in C++ of its proprietary protocol and core technology.

With over seven years of experience and leadership in the VoIP sector, our engineers have created a flexible, powerful, and scalable solution granting you the ability to customize and tailor your voice communication needs any way you desire. New users and TeamSpeak veterans alike will now enjoy a completely new experience in voice communication using TeamSpeak 3's unmatched functionality and powerful new features.


Website : http://www.teamspeak.com/?page=teamspeak3
Download page: http://www.teamspeak.com/?page=downloads