• Coursera (coursera.org)
• Mit Open courseware (OCW.MIT.edu)
• Open yale courses (OYC.Yale.edu)
• John Hopkins Open courses (OCW.JHSPH.edu
• Oxford Math Open Courseware (aths.ox.ac.uk/courses)
• Hillsdale college (US History etc) https://online.hillsdale.edu/
• Oedb: http://oedb.org/open/
• Open Culture: http://www.openculture.com/freeonlinecourses
• University of the people: http://uopeople.edu/
• Britain: https://www.futurelearn.com/courses

Have some to add to the list? Please do so in the comment section of this blog.