Best Kattis Alternatives in 2026
Updated
20 platforms from automated grading software ranked against Kattis on the same published basis.
- 1Kattis vs PrairieLearn
- 2Kattis vs CodeGrade
- 3Kattis vs codePost
- 4Kattis vs ClassMarker
- 5Kattis vs HackerRank
- 6Kattis vs Codio
- 7Kattis vs Vocareum
- 8Kattis vs MATLAB Grader
- 9Kattis vs Socrative
- 10Kattis vs Formative
- 11Kattis vs Gradescope
- 12Kattis vs MyOpenMath
- 13Kattis vs Wayground (formerly Quizizz)
- 14Kattis vs ZipGrade
- 15Kattis vs ClassLens
- 16Kattis vs IMathAS
- 17Kattis vs Easy LMS
- 19Kattis vs Akindi
- 20Kattis vs Möbius Assessment
- 21Kattis vs WeBWorK
Kattis alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | PrairieLearn | 7.4 | Free plan | $0.25/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 2 | CodeGrade | 7.3 | Free plan | Free | API, Web |
| 3 | codePost | 7.2 | Free plan | Free | API, self-hosted, Web |
| 4 | ClassMarker | 6.9 | No | — | Android, API, iOS, Web |
| 5 | HackerRank | 6.9 | No | $165/mo | API, Mac, Web, Windows |
| 6 | Codio | 6.8 | No | $7.50/mo | API, Linux, Mac, Web, Windows |
| 7 | Vocareum | 6.7 | No | $10/mo | API, Web |
| 8 | MATLAB Grader | 6.0 | Free plan | Free | Linux, Mac, Web, Windows |
| 9 | Socrative | 6.0 | Free plan | $10/mo | Android, iOS, Web |
| 10 | Formative | 5.9 | Free plan | $20.75/mo | Web |
| 11 | Gradescope | 5.9 | Free plan | Free | Android, iOS, Web |
| 12 | MyOpenMath | 5.9 | Free plan | Free | self-hosted, Web |
| 13 | Wayground (formerly Quizizz) | 5.9 | Free plan | $18/mo | Android, Browser, iOS, Linux, Mac, Web, Windows |
| 14 | ZipGrade | 5.8 | Free plan | $0.58/mo | Android, iOS, Web |
| 15 | ClassLens | 5.7 | Free plan | $10/mo | Web |
| 16 | IMathAS | 5.6 | No | — | self-hosted, Web |
| 17 | Easy LMS | 5.5 | No | $66.67/mo | Web |
| 19 | Akindi | 5.1 | No | — | Web |
| 20 | Möbius Assessment | 5.1 | No | — | Web |
| 21 | WeBWorK | 5.1 | Free plan | Free | API, Linux, self-hosted, Web |
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Questions about Kattis alternatives
What is the best alternative to Kattis?
PrairieLearn, number 1 in automated grading software with a score of 7.4 out of 10. The others here: CodeGrade, codePost, ClassMarker and 16 more.
What is the best free alternative to Kattis?
PrairieLearn is the best-ranked alternative with a free plan. 12 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.