EdX is a non-profit online learning platform created by the Massachusetts Institute of Technology and Harvard University in 2012. It is extremely popular, with over 1,800 courses and 14 million users. Courses are taught by universities, nonprofit organizations, and corporations. You can take edX courses for free when enrolled in the audit track if you do not need a certificate. For a verified certificate you pay a fee typically between $50 and $300. You can earn all the way up to a Masters Degree on edX, which depending on the subject typically ranges between $10,000 and $25,000. Get started with edX today!