XiphWiki

Description
Wiki to bring Open Source ideals to the world of 

Xiph builds free multimedia software including the (Ogg)Vorbis audio codec, the Free Lossless  Codec, (FLAC), and the (Ogg) Theora  codec.

The Xiph wiki describes Xiph's free and open s and software.

Related wiki: MultimediaWiki, Transcode Wiki, ...