EMKC offers practical coding challenges and contests that can be completed in any of 17 programming languages.
Codewars
vsAtCoder
Codewars vs AtCoder
How do Codewars and AtCoder compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | Codewars | AtCoder |
|---|---|---|
| What it is | Codewars offers community-created coding exercises called kata, with practice across more than 55 programming languages. | AtCoder hosts online programming contests, including beginner and heuristic contests, with practice contests for new users. |
| Website | ||
| Type | Website | Website |
| Topic | ||
| Pricing | Not confirmed | Not confirmed |
| Platforms | Web | Web |
| Open source | Not stated | Not stated |
| Language | English | — |
| Alternatives |
Other options to consider
Sites similar to both Codewars and AtCoder.
Exercism offers practice and mentoring across 83 programming languages.
Free
24 alternatives
30 Seconds of Code offers hundreds of short coding articles to help readers practice programming skills.
NeetCode offers coding interview practice through courses, assessments, head-to-head mode, and a catalog of programming problems.
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.