OpenGL Headline News
Crystal Space is a portable Open Source 3D engine which lots of features. It fully supports the OpenGL API including stencil shadows and vertex and fragment shaders (shaders through ARB extensions and CG). The latest stable release (0.98r004) is getting old. The next stable release will be 1.0 but there is still more work to be done. The pseudo-stable versions available through CVS are not as well ttested but are recommended for people to try and use.