Codewars offers community-created coding exercises called kata, with practice across more than 55 programming languages.
Exercism
vsAtCoder
Exercism vs AtCoder
How do Exercism and AtCoder compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | Exercism | AtCoder |
|---|---|---|
| What it is | Exercism offers practice and mentoring across 83 programming languages. | AtCoder hosts online programming contests, including beginner and heuristic contests, with practice contests for new users. |
| Website | ||
| Type | Website | Website |
| Topic | ||
| Pricing | Free | Not confirmed |
| Platforms | Web | Web |
| Open source | Not stated | Not stated |
| Language | English | — |
| Alternatives |
Other options to consider
Sites similar to both Exercism and AtCoder.
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Rosetta Code presents solutions to the same programming tasks in multiple languages for comparison.