Farstream (previously known as Farsight) is an audio/video conferencing framework based on GStreamer.
The project provides audio/video conferencing for as many instant messengers as possible through a modular design.
Telepathy and Farsight constitute the first implementation of the Jingle XMPP protocol.
The software is open-source, being distributed under the GNU Lesser General Public License (LGPL) and is intended to run on POSIX-compliant operating systems, including Linux but also Windows and Mac OS X.
It is also the VoIP framework used by Meego.