Ruby

 Thomas Kadauke has written a first implementation in  Ruby as a Rubygem. It is based on the  csspool library.

• Repository in Github:  http://github.com/imedo/css_doc
• Example CSS Documentation:  http://opensource.imedo.de/css_doc/index.html
• License:  MIT
• Release Announcement:  http://devblog.imedo.de/2009/7/19/release-css_doc-css-file-documentation-extractor
• List Announcement:  http://groups.google.com/group/cssdoc/browse_thread/thread/270a66df8dc854ea?hl=en