I just released the first beta of
CopperCube for Mac OS X. CopperCube is a 3D editor for creating 3D Flash, WebGL, Windows and now Mac applications.
It can also be used for editing Irrlicht scenes, it includes an .irr scene exporter. This first beta version supports Mac OS X 10.4 and newer, on intel chips. You can
download the release here, any feedback is welcome.
Porting CopperCube to this operating system was quicker than I
had initially estimated.