Harvard & MIT free online courses
Please check the official websites for detailed information.
http://mitx.mit.edu/
http://www.edxonline.org/
http://www.udacity.com/
https://www.coursera.org/courses
1.MITx will offer a portfolio of MIT courses for free to a virtual community of learners around the world. It will also enhance the educational experience of its on-campus students, offering them online tools that supplement and enrich their classroom and laboratory experiences.
2.MIT and Harvard announce edX
Joint venture builds on MITx and Harvard distance learning; aims to benefit campus-based education 
3.Udacity is a totally new kind of learning experience. You learn by solving challenging problems and pursuing udacious projects with world-renowned university instructors (not by watching long, boring lectures). At Udacity, we put you, the student at the center of the universe.
4.Courses for Everyone.
We offer a wide range of courses from our partner institutions, spanning the humanities to engineering. Find a course that interests you and join today to learn alongside our global community!
