Learn to code (for free) with interactive challenges. Gain XP, unlock achievements and climb the leaderboard. It's the fastest, easiest, most addic...
Code School teaches web technologies in the comfort of your browser with video lessons, coding challenges, and screencasts.tags: educational educational-tool ifttt-integration interactive-lessons online-education platform: Online
A fun social platform for hackers to solve interesting puzzles, build quick hacks, code game bots and collaborate to solve real-world challenges.tags: challenge programming platform: Online
Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve...tags: challenge mathematics problem problem-solving programming platform: Online
Coderbyte is a place built for anyone to practice and perfect their programming skills. Challenges are added almost every day so you can work on ap...tags: learn-a-programming-language programming platform: Online
Teaching technology via app development.Learn By Doing :We believe that the best way to learn a language is to attempt building something on it. Wi...tags: Discontinued learn-a-programming-language online-education programming ruby-development platform: Online Discontinued
CodeChef was created by Directi as a way to continuously challenge and engage the developer community. Our goals are to provide a platform for prac...tags: development programming-competitions platform: Online
Topcoder gathers the world’s experts in design, development and data science to work on interesting and challenging problems. Members are provided ...tags: code-projects development educational programming platform: Online