The top five free online courses of all time follow no pattern whatsoever. One covers programming, two are about natural sciences and two others examine brain topics from very different perspectives, and they come from universities all over the world. But all five have one thing in common: They’ve been judged as the best-ranked by the people who have taken the classes and voted on them through Class Central. Class Central Ranks Top 100 MOOCs 'of All Time'
Source: Campus Technology
