Codewars offers community-created coding exercises called kata, with practice across more than 55 programming languages.
AtCoder
vsCodility
AtCoder vs Codility
How do AtCoder and Codility compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | AtCoder | Codility |
|---|---|---|
| What it is | AtCoder hosts online programming contests, including beginner and heuristic contests, with practice contests for new users. | Codility Developer Training offers hands-on programming lessons, including exercises on topics such as binary gaps. |
| Website | ||
| Type | Website | Website |
| Topic | ||
| Pricing | Not confirmed | Not confirmed |
| Platforms | Web | Web |
| Open source | Not stated | Not stated |
| Language | — | English |
| Alternatives |
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FreePick
24 alternativesToph hosts competitive programming contests and problems on algorithms and data structures, with a community for participants.
30 Seconds of Code offers hundreds of short coding articles to help readers practice programming skills.







