Alternatives to Project Euler for all platforms with any license

  • Coderbyte icon

    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 algorithmic thought process on any problem you want at anytime. Coderbyte...

    Freemium Web / Cloud

  • SitePoint icon

    SitePoint

    Learn Web Design and Development with SitePoint tutorials, courses, and books - HTML5, CSS3, JavaScript, PHP, mobile app development, Responsive Web Design.

    Freemium Web / Cloud

  • CodeFights icon

    CodeFights

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

    Free Personal Self-Hosted

  • 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 challenges.

    Free Web / Cloud

  • CodeAbbey icon

    CodeAbbey

    This resource is created to provide short programming problems for all who wants learn programming and improve their programming skills, but who could not easily find enough tasks for practice. Our main intention is to increase a...

    Free Web / Cloud

  • CodinGame icon

    CodinGame

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

    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, kata are real code challenges focused on improving skill and technique. Some train programming...

    Free Self-Hosted

  • The AI Games icon

    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 competitions that we offer. Learn, win prizes, but most importantly, have...

    Free Web / Cloud

  • exercism icon

    exercism

    Download and solve practice problems in over 30 different languages. For code newbies and experienced programmers.

    Open Source Web / Cloud Terminal

  • Spoj icon

    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 users Spoj is one of the best programmers' communities and...

    Free Web / Cloud Self-Hosted

  • Halite.io icon

    Halite.io

    Halite is an artificial intelligence programming challenge.

    Open Source Mac Windows Linux

  • Kattis icon

    Kattis

    Kattis helps companies make safer recruitments and attract the best developers with its dynamic challenge platform. With Kattis companies make sure developers make the cut before the technical interview saving time. Kattis can...

    Commercial Web / Cloud

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  • The Eudyptula Challenge

    The Eudyptula Challenge is a series of programming exercises for the Linux kernel, that start from a very basic "Hello world" kernel module, moving on up in complexity to getting patches accepted into the main Linux kernel...

    Free Web / Cloud

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