FutureLearn - Free online courses from top universities and cultural institutions
GitShowcase - Plug and play portfolio for developers
Free Code Camp - Learn to code by helping nonprofits.
Appolo - Static app portfolio for developers
Mindvalley - Mindvalley is an online education platform that facilitates users by connecting them with numerous strong-minded people worldwide and sharing knowledge or ideas through chatting, meetups, and video calls.
GPortfolio - Create an automatic portfolio based on Github profile.