Songbird is a free and open source software audio player and web browser founded by Rob Lord and developed by Pioneers of the Inevitable , with a stated mission "to incubate Songbird, the first Web player, to catalyze and champion a diverse, open Media Web."
Songbird employs Mozilla's XULRunner platform, and is thus capable of running on Microsoft Windows, Apple Mac OS X, Solaris and Linux. Songbird utilizes the GStreamer media framework.