Open Educational Resources (OER) are teaching and learning materials that are freely available for everyone to use, whether you are an instructor, student or self-learner.
EdX offers free online courses and classes.
Wolfram|Alpha introduces a fundamentally new way to get knowledge and answers not by searching the web, but by doing dynamic computations based on a vast collection of built-in data, algorithms, and methods.
MIT open couse ware offers a portfolio of free MIT courses to a virtual community o>f learners around the world.
Open Yale Courses provides free and open access to a selection of introductory courses taught by distinguished teachers and scholars at Yale University.
Saylor Academy's resources cover content from art history to sociology with search filters that can help you locate just the right book, recording, presentation, video, chapter or image.
Open University (OU) offers free learning plathform for students and for Instructors.
Open data is the idea that certain data should be freely available to everyone to use and republish as they wish, without restrictions from copyright, patents or other mechanisms of control.
The College Open Textbooks Collaborative, a collection of twenty-nine educational non-profit and for-profit organizations, affiliated with more than 200 colleges.
The World Bank is the largest single source of development knowledge. The World Bank Open Knowledge Repository (OKR) is the World Bank’s official open access repository for its research outputs and knowledge products.
Wikiopedia is a Wikimedia Foundation project devoted to learning resources, learning projects, and research for use in all levels, types, and styles of education from pre-school to university, including professional training and informal learning. Wikiversity has thousands of learning resources licensed with Creative Commons.