Just came across a c++ library and viewer: https://maverick.inria.fr/Software/X3D/ It does not seem to be listed on the resources page: http://www.web3d.org/x3d/content/examples/X3dResources.html It comes with source code and a functional viewer executable. It is from 2004 but may still be useful. -Andreas -- Andreas Plesch Waltham, MA 02453