The open source Bullet Collision Detection and Rigid Body Dynamics Library offers support for COLLADA 1.4 content. supports. The Bullet Collada 1.4 Physics Viewer can import Collada 1.4 Physics, generated by ColladaMaya, or ColladaBlender, or other DCC tools (untested). Using either FCollada or COLLADA-DOM, basic Rigid Body information and Collision Shapes (Box, Sphere, Cylinder, Cone (tapered_cylinder), Convex Polyhedron and static TriangleMesh) are created. Early alpha release so no support for constraint yet.