ccextractor
Carlos' version (mainstream) is the most stable branch.
Extracting subtitles has never been so easy. Just type the following command: ccextractor "name of input"
Gui lovers should download the Sorceforge version of CCExtractor, the Git Version is not your cup of tea. http://ccextractor.sourceforge.net/download-ccextractor.html
For News about release, please find CHANGES.TXT