Both VisualHub and iSquint are available
on SourceForge.net (here: http://transcoderredux.svn.sourceforge.net/
). After closing Techspansion, Tyler Loch, the original developer gave the source code to the open software community. Names have changed to FilmRedux and PunyVideo. I don't know if there's any change in feature or GUI, though.
) is perhaps a better choice now!
Edit: you'll need Xcode to compile the source code
. I just tried and both applications compiled and launched without any problem.