CodinGame

CodinGame is a challenge-based training platform for programmers where you can play with the hottest programming topics.

• Awesome content and games, great way to find jobs, active and nice community LeonardAL • Oct 2016 Disagree   Agree

Free Web

Project Euler

Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve.

Free Web

Codility.com

The programmer testing solution that matches your job descriptions and helps you hire great developers faster.

Commercial Mac Windows Web Android iPhone ... iPad

CodeFights

Preparing for interviews? Looking for a new job? - Practice for interviews using real questions on need-to-know topics. - Get matched with our hiring partners when...

Free Personal Web

Devskiller

Devskiller is a developer screening and online interview platform powered by RealLifeTesting™ methodology.

• The customer support is awesome and the tasks are really carefully thought out. They must've spent a long time on them dgfdgdfhgdfh • Jun 2017 • 1 agrees and 0 disagrees Disagree   Agree
• It tests actual skills to find the real problem solvers todorpapic1 • Aug 2017 Disagree   Agree

Commercial $ $ $ Mac Windows Web Android iPhone

Codewars

Achieve code mastery through challenge. Improve your skills by training with others on real code challenges Kata In our dojo, kata are real code challenges...

Freemium $ $ $ Web

CheckIO

CheckiO is expanding the world’s code literacy through gameplay. We always wanted to create the most entertaining game where gaming and coding experiences are...

Free Open Source Web Pycharm WebStorm

Geektastic

Unique peer-reviewed code challenges for deep insight into candidate's technical skills and abilities.

Commercial Windows iPhone Chrome OS

Coderbyte

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 applying your...

Freemium Web

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....

Free Web

Spoj

Sphere Online Judge created for the coders' community to train, to learn and to make progress. With thousands of programming problems and an international group of...

Free Web Self-Hosted

The AI Games

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

Codeeval

CodeEval is platform for hosting coding challenges which has over 20,000+ competitive developers.

• It provides good challenges of different levels. Guest • Jan 2017 Disagree   Agree

Free Web

BitDegree

The world's first blockchain-powered online education platform with token scholarships & tech talent acquisition.

Freemium $ $ $ Open Source Web Self-Hosted

Hackerearth

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