Alternatives to Topcoder for all platforms with any license

Platforms

Web / Online

  • hackerrank.com icon

    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

  • CodeFights icon

    CodeFights

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

    Free Personal Self-Hosted

  • Codingbat icon

    Codingbat

    The online programming practice in java and python. CodingBat is a free site of live coding problems to build coding skill in Java...

    Free Web / Cloud

  • Codewars icon

    Codewars

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

    Free Self-Hosted

  • Programmr icon

    Programmr

    At Programmr you can code, compile & run your programs directly in the browser. Supported platforms include C++, Java, PHP, C#...

    Free Web / Cloud

  • Spoj icon

    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

  • Codechef icon

    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

  • Kattis icon

    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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