Description: Harvard Open Courses provides free online access to courses taught at Harvard University. It contains over 2,500 courses in a wide variety of subjects including computer science, literature, history, and more.
Type: software
Pricing: Free
Description: Wikibooks is an open collection of textbooks and study guides that anyone can contribute to. It aims to create high-quality textbooks and learning materials that are free for anyone to access.
Type: software