An OS X (Darwin) port of this widely used GUI for command line apps would be very useful. I learned about it over at Source Forge. http://kaptain.sourceforge.net
More details are here... http://apps.kde.com/uk/0/info/id/562
When I ran configure it said my c++ compiler could not make executables.
Never seen that one before.
It requires Qt from Trolltech. They have a public beta that works for me.
http://www.trolltech.com/
Cheers,
Matt