EDITORS NOTE: THIS SOFTWARE HAS CEASED DEVELOPMENT, BUT IS STILL AVAILABLE FOR DOWNLOAD
Pixelshox was looking very promising as a modular VJ authoring app in the style of MAX/Nato and Visual Jockey. It was developed from the ground up using MacOS X native technology and optimised for hardware OpenGL performance. Even on a "lowend" 550 Mhz G4 Powerbook you can drop 5 or 6 effects on top of two 320x340 quicktimes + have some 3d geometry or text going. It's also very stable except for some problems with live camera input and javascript plugins.