Alternatives to Codewars for all platforms with any license

Platforms

Web / Online

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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...

    Freemium Web / Cloud

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    Project Euler

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

    Free Web / Cloud

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    hackerrank.com

    A fun social platform for hackers to solve interesting puzzles, build quick hacks, code game bots and collaborate to solve real-world...

    Free Web / Cloud

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    CodeFights

    Duel with friends and foes in head-to-head programming battles!

    Free Personal Self-Hosted

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    Codeeval

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

    Free Web / Cloud

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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...

    Free Web / Cloud Self-Hosted

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    Topcoder

    Topcoder provides members opportunities to demonstrate their expertise, improve their skills, and win cash, while helping real world...

    Free Web / Cloud

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    Codechef

    CodeChef was created by Directi as a way to continuously challenge and engage the developer community. Our goals are to provide a...

    Free Web / Cloud

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    Kattis

    Kattis helps companies make safer recruitments and attract the best developers with its dynamic challenge platform. With Kattis...

    Commercial Web / Cloud

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