"The mind is not a vessel to be filled, but a fire to be kindled." - Plutarch
The Open Education Database http://oedb.org/open
Coursera https://www.coursera.org/
edX https://www.edx.org/
Stanford Engineering Everywhere http://see.stanford.edu/
MITx: MIT's new online learning initiative http://mitx.mit.edu/
Udacity http://www.udacity.com/
The Saylor Foundation http://www.saylor.org/
MIT Open Courseware http://ocw.mit.edu/index.htm
Academic Earth http://www.academicearth.org/
Academic Room http://www.academicroom.com/
TED Talks - Ideas worth spreading http://www.ted.com/
Khan Academy https://www.khanacademy.org/a/tn8h
Open University's open learning initiative http://www.open.edu/openlearn/
Carnegie Mellon University's open learning initiative http://oli.cmu.edu/learn-with-oli/see-our-free-open-courses/
Stanford University Venture Labs https://venture-lab.org/
Harvard Extension School's Open Learning Initiative http://www.extension.harvard.edu/open-learning-initiative
ALISON Free online courses and certification http://alison.com/
Open Culture's 700 Free Online Courses http://www.openculture.com/freeonlinecourses
Massively Open Online Courses http://en.wikipedia.org/wiki/Massive_open_online_course http://www.onlineschools.org/inside-online-schools/moocs-what-are-mitx-h...
http://calnewport.com/blog/2012/10/26/mastering-linear-algebra-in-10-day...
WikiEducator http://wikieducator.org/Main_Page
Connection knowledge sharing http://cnx.org/