Khan Academy -Create beautiful art and design your own simulations while learning how to program.
edX – EdX is a not-for-profit enterprise of its founding partners Harvard University and the Massachusetts Institute of Technology that features learning designed specifically for interactive study via the web. MITx HarvardX
Udacity – Our mission is to bring accessible, affordable, engaging, and highly effective higher education to the world. We believe that higher education is a basic human right, and we seek to empower our students to advance their education and careers.
Cousera – a social entrepreneurship company that partners with the top universities in the world to offer courses online for anyone to take, for free. We envision a future where the top universities are educating not only thousands of students, but millions. Our technology enables the best professors to teach tens or hundreds of thousands of students.
Code Academy – Learn to code interactively, for free. People all over the world are learning with Codecademy.
Turtle Academy – The project contains a client side learning environment and a compiler for the Logo Programming language.The project enables to learn the Logo language and programming principles and can be used for programming logo
Treehouse – A better way to learn technology. Learn to build websites, create iPhone and Android apps, code with Ruby on Rails and PHP, or start a business.