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Coding Challenge Platforms

Alternatives to AtCoder

The tools Specifiction weighs against AtCoder, from its list of coding challenge platforms, each with its plans, platforms and spec score.

  1. 01 CodeSignal

    It suits employers that need skills assessments, interviews, or development tools, and individuals who want structured practice.

    From $24.99/mo Free plan Web · iOS · Android · API
    9.3 Visit Specs
  2. 02 CodeChef IDE
    From $10.33/mo Free plan Web · API
    9.1 Visit Specs
  3. 03 Codility

    Codility suits engineering teams hiring technical candidates or conducting live technical interviews.

    From $100/mo Free trial Web · Windows · macOS · API
    9.0 Visit Specs
  4. 04 HackerEarth Assessments
    From $99/mo Free plan Web · Windows · macOS · Linux
    8.9 Visit Specs
  5. 05 HackerRank

    HackerRank Screen suits companies assessing technical applicants with role-based tests or tests generated from job descriptions.

    From $165/mo Free trial Web · Windows · macOS · API
    8.6 Visit Specs
  6. 06 Coderbyte
    From $99/mo Free trial Web · API · Browser extension
    8.2 Visit Specs
  7. 07 Codewars
    From $2/mo Web · API
    8.2 Visit Specs
  8. 08 CheckiO
    From $4.17/mo Free trial Web · Browser extension
    8.1 Visit Specs
  9. 09 CSSBattle

    CSSBattle suits people practicing HTML and CSS, including beginners starting to learn those technologies.

    From $4.90/mo Free plan Web
    8.1 Visit Specs
  10. 10 DMOJ

    DMOJ suits programming contest organizers, competitors and educational organizations interested in hosting contests or using an archive of programming problems.

    Free plan Web · Windows · Linux · API
    8.0 Visit Specs
  11. 11 Edabit

    Edabit suits learners who want to practice programming through challenges in one of its listed languages.

    Free plan Web
    8.0 Visit Specs
  12. 12 beecrowd

    It suits people practicing programming problems and institutions running coding exercises through an LMS.

    Free plan Web · API
    7.9 Visit Specs
  13. 13 DOMjudge

    DOMjudge suits organizers running structured programming contests with fixed problems and schedules.

    Free plan Web · Linux · API · Self-hosted
    7.9 Visit Specs
  14. 14 Codeforces

    Codeforces suits people who want to compete in programming contests, practice with past problems, or use its API for public data.

    Free plan Web · API
    7.8 Visit Specs
  15. 15 AlgoExpert
    From $9.92/mo Web
    7.7 Visit Specs
  16. 16 CodingBat

    CodingBat suits learners practicing Java or Python for self-study, homework, labs, or classroom examples.

    Free plan Web
    7.6 Visit Specs
  17. 17 Eolymp

    Eolymp suits educators and organizers who need to run programming contests, practice activities or courses.

    Free plan Web · API
    7.6 Visit Specs
  18. 18 TestDome
    Free trial Web · API
    7.5 Visit Specs
  19. 19 Frontend Mentor
    Free plan Web
    7.4 Visit Specs
  20. 20 GeeksforGeeks Practice

    It suits students and developers who want structured coding practice, including interview-focused problem sets.

    Web · iOS · Android
    7.4 Visit Specs
  21. 21 NextJudge
    Web · Linux · API · Self-hosted
    7.3 Visit Specs
  22. 22 Project Euler
    Free plan Web
    7.2 Visit Specs
  23. 23 Yandex Contest

    Yandex names schools, universities, and competition organizers as users.

    Free plan Web · API
    7.2 Visit Specs
  24. 24 Kattis
    Web · Linux
    7.1 Visit Specs
  25. 25 Qualified
    Free trial Web · API
    7.0 Visit Specs
  26. 26 SQLZoo
    Free plan Web
    7.0 Visit Specs
  27. 27 Topcoder

    It suits businesses seeking external software, data, AI, UX, or QA expertise for defined challenges or broader projects.

    Web · API
    7.0 Visit Specs
  28. 28 LeetCode
    Web · iOS · Android
    5.9 Visit Specs
  29. 29 Exercism
    Web
    5.5 Visit Specs

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