Some of the interesting ones include:
- University of the People - get a free online education
- MIT CourseWare - includes the course material for over 2,000 MIT courses that faculty at other institutions can use
- Connexions from Rice University - shared course materials
- Carnegie Mellon's Open Learning Initiative - free online courses for students as well as materials for instructors
- iTunes U - From the site: "There are over 600 universities with active iTunes U sites. About half of these institutions — including Stanford, Yale, MIT, Oxford, and UC Berkeley — distribute their content publicly on the iTunes Store."