Re: [ros-dev] Off-topic: Open Mac OS X???

[Mike Swanson]

Making a separate project for this is a little pointless anyway, since
you can already partially do this.

Take Darwin and put GNUstep on it. GNUstep aims to be
OPENSTEP-compatible, with Cocoa as a side-goal, but you should be able
to compile most Cocoa applications against GNUstep.
-- 
Mike