Codewars offers community-created coding exercises called kata, with practice across more than 55 programming languages.
AtCoder
vsExercism
AtCoder vs Exercism
How do AtCoder and Exercism compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | AtCoder | Exercism |
|---|---|---|
| What it is | AtCoder hosts online programming contests, including beginner and heuristic contests, with practice contests for new users. | Exercism offers practice and mentoring across 83 programming languages. |
| Website | ||
| Type | Website | Website |
| Topic | ||
| Pricing | Not confirmed | Free |
| Platforms | Web | Web |
| Open source | Not stated | Not stated |
| Language | — | English |
| Alternatives |
Other options to consider
Sites similar to both AtCoder and Exercism.
EMKC offers practical coding challenges and contests that can be completed in any of 17 programming languages.
Programiz offers free online compilers and code editors alongside programming tutorials for languages including Python, JavaScript, SQL, and C++.
ZetCode offers accessible programming tutorials covering C#, Go, Python, Java, and other languages.
CodeAbbey offers programming problems for practice, with recent challenges and a programming certificate.
Rosetta Code presents solutions to the same programming tasks in multiple languages for comparison.