Massachusetts Institute of Technology.
- MIT License ● A permissive free software licence from MIT.
- MIT OpenCourseWare ● 'MIT OpenCourseWare (OCW) is a web-based publication of virtually all MIT course content. OCW is open and available to the world and is a permanent MIT activity.'
- OpenRelativity ● 'OpenRelativity is an open-source toolkit to simulate effects of special relativity by varying the speed of light.'