open-source/freeware that uses physics constraints?

I’m getting ready to go and research this thoroughly, I’m basically just looking for something ‘free’ that can demonstrate the Collada physics constraints.

So far I’m looking at the blender/XSI Collada support, and trying to find any Collada specific viewers that allow export/import, of the physics libraries.

Any recommendations would save me a lot of time, thanks in advance.


You can try Bullet Engine, or the AGEIA SDK, or the newton dynamic engine, or the Feeling Software viewer (15 days free evaluation), or John Ratcliff CreateDynamics tool.

As far as exporting physics, you can get this from Blender, Max or Maya. XSI does not provide COLLADA Physics support yet.