Another example was VisualHub, a Mac front-end for ffmpeg video conversion. The author, Techspansion, EOL'd it in 2008 and released a "code dump" as open source. Someone tried to pick up the pieces and form an open-source version called FilmRedux, but it was last updated in 2009.

Techspansion, however, was a good citizen and when a Mac OS X Lion broke VisualHub, he released a patched binary, so I'm still able to use VisualHub four years after it was EOL'd! :)

http://www.isquint.org/