Alternatives to Codier for all platforms with any license

  • HackerRank

    Engaging social network tasking developers with real world coding challenges and connecting them with great companies.

    Free Personal Web

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  • 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

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  • 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

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  • 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

    No features added Add a feature

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  • 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

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  • Screeps

    Learn to code JavaScript by playing game. This game claims to be the world’s first MMO strategy sandbox game for programmers.

    Commercial $ $ $ Mac Windows Linux Web SteamOS

    No features added Add a feature

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  • 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

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