Codewars offers community-created coding exercises called kata, with practice across more than 55 programming languages.
30 Seconds of Code vs Exercism
How do 30 Seconds of Code and Exercism compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | 30 Seconds of Code | Exercism |
|---|---|---|
| What it is | 30 Seconds of Code offers hundreds of short coding articles to help readers practice programming skills. | 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 | English |
| Alternatives |
Other options to consider
Sites similar to both 30 Seconds of Code and Exercism.
Programiz offers free online compilers and code editors alongside programming tutorials for languages including Python, JavaScript, SQL, and C++.
Rosetta Code presents solutions to the same programming tasks in multiple languages for comparison.
CodeAbbey offers programming problems for practice, with recent challenges and a programming certificate.
NeetCode offers coding interview practice through courses, assessments, head-to-head mode, and a catalog of programming problems.
AtCoder hosts online programming contests, including beginner and heuristic contests, with practice contests for new users.







