open source
 
  open media toolkit
A powerfull C++ framework for real time 2D/3D animation.

 

   Miraton
Play and experiment real time music/sound effect with this sound toy for Mac OS X.
    Lightcontroller
A Mac OS X application to control and to program DMX RGB lights.

 

   Cosmicpainter
A Mac OS X application to paint animated patterns on a rotating canvas (like a Spirograph).