VoiceChatter is a free, open source, and cross platform voice chat application. It is built for gaming, so it is light weight, yet delivers excellent voice quality over minimal bandwidth and latency. For more, visit http://www.voicechatter.net
System Requirements
Sistema Operacional: OS Portable (Source code to work with many OS platforms), MacOSX, POSIX (Linux,BSD,Solaris etc..), Windows XP