edabit.com
Learn to code (for free) with interactive challenges. Gain XP, unlock achievements and climb the leaderboard. It's the fastest, easiest, most addictive way to learn.
CodeChef was created by Directi as a way to continuously challenge and engage the developer community. Our goals are to provide a platform for practice, competition and...
CodeChef was created by Directi as a way to continuously challenge and engage the developer community. Our goals are to provide a platform for practice, competition and improvement as well as enable developers to benchmark their skills against their peers. We’re having fun with the site and hope you will too.
development programming-competitions
Learn to code (for free) with interactive challenges. Gain XP, unlock achievements and climb the leaderboard. It's the fastest, easiest, most addictive way to learn.
Free Web
A fun social platform for hackers to solve interesting puzzles, build quick hacks, code game bots and collaborate to solve real-world challenges.
Free Web
Unique peer-reviewed code challenges for deep insight into candidate's technical skills and abilities.
Commercial Windows iPhone Chrome OS
a social and community platform for students and developers for solving programming puzzles, sharing notes and practicing concepts with the online editor, live...
Free Web