LinkedIn Learning - Online training through LinkedIn's professional network.
EduDo - EduDo is a video discussion platform
Hackr.io - There are tons of online programming courses and tutorials, but it's never easy to find the best one. Try Hackr.io to find the best online courses submitted & voted by the programming community.
Alcamy - Free, open self-learning platform. Learn & teach anything.
Fluany - Everything you need to force your mind to learn
TeenUp - A learning platform designed for teens by teens