California Open Online Library for Education
FREE and OPEN online course materials: eTextbooks, course materials, online courses, and journals & articles
Courses and whole degree programs in 15+ subject areas. All courses are protected under Creative Commons--Attribution License. This means you can use, remix, and modify their courses in revising your own courses (some of the individual materials in the Saylor.org courses may be protected by copyright held by a third party).
"...provides free and open access to a selection of introductory courses taught by distinguished teachers and scholars at Yale University. The aim of the project is to expand access to educational materials for all who wish to learn".
The Open Learning Initiative (OLI) is a grant-funded group at Carnegie Mellon University, offering innovative online courses to anyone who wants to learn or teach.
Free lecture notes, exams, and videos from MIT. No registration required. 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.
Harvard courses are offered online by Harvard Extension School’s Open Learning Initiative. Featuring Harvard faculty, the courses are open to the public.