A collection of test and demo 3D models (and textures and other media). Useful with Castle Game Engine tools (for example view3dscene, http://castle-engine.sourceforge.net/view3dscene.php ), Many of them follow standard file formats (like VRML / X3D) and as such can be also viewed / edited using other tools.
Complete documentation on http://castle-engine.sourceforge.net/demo_models.php .
GNU GPL >= 2. Except for some media files (textures, sounds) where a different license is clearly stated in the AUTHORS.txt file. All of the files are on open-source compatible licenses.