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.
a social and community platform for students and developers for solving programming puzzles, sharing notes and practicing concepts with the online editor, live...
hackerearth is building the largest hub of programmers to help them practice and improve their programming skills. at hackerearth, programmers:1. solve problems on algorithms, ds, ml etc(http://hck.re/bh4qwk )2. participate in coding contests(http://hck.re/rft4no )3. participate in hackathons(http://hck.re/5paeyi )
to businesses, hackerearth provides the most effective mechanism to engage with the developer ecosystem and effectively evaluate technical skills. here are the two solutions which hackerearth provides to the businesses:
1. recruit(http://hck.re/vj6kms ): helps to evaluate programming skills of candidates.2. sprint(http://hck.re/8orrff ): helps to manage and host hackathons.
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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
At Devskiller we make testing programmers look like their first day at work. It’s the best way to recruit.
Free Mac OS X Windows Android iPhone 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
Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve.
Free Web
The programmer testing solution that matches your job descriptions and helps you hire great developers faster.
Commercial Mac OS X Windows Android iPhone Web
Duel with friends and foes in head-to-head programming battles!.
Free Personal Web
Develop your coding skills and practice them by competing with hundreds of players worldwide. Code your own bots in your preferred language and join the various...
Free Web
Unique peer-reviewed code challenges for deep insight into candidate's technical skills and abilities.
Commercial Windows iPhone Chrome OS
Halite is an artificial intelligence programming challenge.
Free Open Source Mac OS X Windows Linux
Customizable platform for organizing dedicated contests that can test programming skills of its participants.
Commercial Self-Hosted
Interact is an AI based Tech Hiring Platform for Secure Assessments and Collaborative Interviews enabling enterprises to build teams 4X faster.
Commercial Mac OS X Windows Linux Chrome OS Web