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Khan Academy is not-for-profit with the goal of changing education for the better by providing a free world-class education to anyone anywhere.

We are committed to making the best education in the world freely available to any person who seeks it. We envision people throughout the world, in both developed and developing countries, using our platform to get access to world-leading education that has so far been available only to a tiny few. We see them using this education to improve their lives, the lives of their families, and the communities they live in.

Online university-level technical courses. We believe university-level education can be both high quality and low cost. Using the economics of the Internet, we've connected some of the greatest teachers to hundreds of thousands of students all over the world.

Wikibooks is a Wikimedia community for creating a free library of educational textbooks that anyone can edit.

TED-Ed’s commitment to creating lessons worth sharing is an extension of TED’s mission of spreading great ideas. Within the growing TED-Ed video library, you will find carefully curated educational videos, many of which represent collaborations between talented educators and animators nominated through the TED-Ed platform. This platform also allows users to take any useful educational video, not just TED's, and easily create a customized lesson around the video. Users can distribute the lessons, publicly or privately, and track their impact on the world, a class, or an individual student. »

Wikiversity 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. We invite teachers, students, and researchers to join us in creating open educational resources and collaborative learning communities.

Free online courses from top universities and cultural institutions

All the most useful Rules of Algebra in one place: easy to understand, free, searchable, ad-free, open-source, and accompanied by informative descriptions & examples. These simple rules — applied with a pinch of imagination and a dash of arithmetic — can divide, conquer, and solve just about any algebra problem.

Catch up with intricate Science and Math concepts with Eureka.in NSES app.

The OpenCourseWare Consortium is a collaboration of higher education institutions and associated organizations from around the world creating a broad and deep body of open educational content using a shared model.

DataCamp provides interactive data science and statistics training to the world. It is not about passively reading books, or watching YouTube videos that put a focus on the instructor and not the scholar. All courses are provided through an online interactive learning platform tailored to hands-on experimentation in the browser.

University of the People is the world’s first tuition-free, non-profit, online academic institution dedicated to opening access to higher education globally for all qualified individuals, despite financial, geographic or societal constraints.

CourseFinder helps you find the course that’s right for you. Whether you're looking for a job, changing careers or just looking for a course to develop your hobby, CourseFinder is the perfect place to start.

Open Yale Courses (OYC) provides free and open access to a selection of introductory courses taught by distinguished teachers and scholars at Yale University.

Take free Harvard online courses through Harvard Extension School's Open Learning Initiative. Course videos feature Harvard faculty.