Mar 7th 2007: Updated version 1.2
Adjusted sensitivity for the newer version of the 3Dconnexion driver
Requires the beta drivers from 3dconnexion
 
MIDI Navigator is a Mac OS X MIDI driver for the 3dconnexion Space Navigator. Usage is very simple: download the application, launch it an select SpaceNavigator in your favorite MIDI application as input device. MIDI Navigator can send relative and absolute CC commands. You can adjust the CC number, mode and sensitivity for each of the six degrees of freedom.
 
Requires Mac OS X 10.4 and a 3dconnexion Space Navigator.
 
MIDI Navigator
See it in action: