onlinecourses.com: Top online college courses from leading universities around the world are collected on this website. Access requires creating a free account. Get videos and lectures from the world's leading universities.
Open Educational Resources: This collection features hundreds of free video lectures and course materials from college and universities in the United States and China.
Open Education Database: Take any college class online for free! Access free course material offered by leading higher education institutions.
Academic Earth: A comprehensive collection of free online college courses from the world's top universities and an original series of thought-provoking videos, designed to spark your intellectual curiosity and start a conversation.
EdX: Interactive online classes from the world’s best universities.
Udacity: Online courses are built in partnership with technology leaders and are relevant to industry needs. Upon completing a Udacity course, you'll receive a verified completion certificate recognized by industry leaders.
Coursera: An education platform that partners with top universities and organizations worldwide, to offer courses online for anyone to take, for free.