Following a suggestion by Kay Whatley, DITA News has begun to collect the current DITA version compatibility for all DITA-related tools.

A preliminary table reports which tools are DITA 1.0, which 1.1 (or both 1.0 and 1.1), etc.

The URL for the Version Compatibility Table is

http://www.ditanews.com/tools/compatibility/

DITA vendors who have been contacted are listed in the Tools A-Z section of DITA News, where you will find links to the tool vendors

http://www.ditanews.com/tools/