DivX For Mac

From the official site:

DivX® 7 for Mac is a free download that provides everything you need to enjoy high-quality digital videos on your computer, including high definition H.264 (.mkv) videos with AAC audio and videos created using all previous versions of DivX technology. You can also play your DivX files (.divx, .avi) on millions of DivX Certified® devices today. Look for DivX Plus™ HD Certified devices soon that will support playback of all DivX and DivX Plus HD files, as well as .mkv (H.264/AAC) videos from the Internet.

There are also other version of the DivX codec, available for different operating systems :

DivX For Amiga
DivX For Linux
DivX For PocketPC
DivX For Windows 3.11 Alpha
DivX For Windows 4.x
DivX 5.x
DivX 7.x

Input Files: DivX, H.264, MKV
Output Files: DivX

Official Download Page Description: Download DivX For Mac from the official site

Version 7.0

• Release Date: Apr 30, 2009
• DivX Player for Mac now plays DivX Plus HD (.mkv) videos and H.264/AAC/MKV videos from the Internet
• DivX Player for Mac sports a brand new design with translucent windows, cleaner play controls and more
• DivX for Mac is optimized for Intel Macs, OS X 10.4 and above. More system requirements.

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