VRML
VRML was mostly experimented with in education and research, where an open specification is most valued. It has now been developed into X3D. The MPEG-4 Interactive Profile (ISO/IEC 14496) was based on VRML (now on X3D), and X3D is largely backwards-compatible with it. VRML is also widely used as a file format to distribute 3D models, mostly from CAD systems.