- theora: reference encoder/decoder library with MMX optimizations for x86 and x86_64: svn, official releases.
- theora-oil: branch with liboil calls: svn [UNMANTEINED].
- theora-exp: experimental encoder/decoder library, supporting the whole spec and having also MMX optimizations for decoding: svn.
- Cortado: a GPL Java decoder for Ogg Theora, Ogg Vorbis and other codecs. Embedding this applet on your website you can give viewers access to streams from either the Flumotion streaming server or play a local file from your server without the need for a locally installed media player supporting the correct formats on the visitors computer.
- ffmpeg (only vp3 features, mmx, sse2 optimisations).
- Theora Hardware: List of hardware-players supporting Ogg Theora
- TheoraSoftwarePlayers: List of media players that can play Ogg Theora
- TheoraSoftwareEncoders: List of software that can encode to Ogg Theora
- TheoraDecoders: List of decoder implementations
- TheoraEncoders: List of encoder implementations
- List of Theora videos: Get some files to see what the codec's like
- Games that use Theora: List of known games that use Theora
- TheoraTestsuite: Different samples to test player compliance