Programiz offers free online compilers and code editors alongside programming tutorials for languages including Python, JavaScript, SQL, and C++.
Exercism
Exercism offers practice and mentoring across 83 programming languages.
About Exercism
Exercism is a free online platform for learning and practicing programming across 84 supported languages. It provides thousands of coding exercises to build skills, with automated analysis of submitted solutions for quick feedback. Users can write code via a command-line interface or an in-browser editor that supports all 84 languages with no local installation required. Free human mentoring is available for all users, with mentors offering feedback on code conventions, idioms, and improvement areas.
Key features
- 84 programming language learning tracks
- Over 8,700 coding exercises
- Automated code analysis feedback
- Free human code mentoring
- CLI-first code submission workflow
- In-browser editor for all languages
Best for: It is best for beginner to intermediate programmers seeking to practice coding skills and learn language-specific conventions across a wide range of programming languages.
Good for
- 100% free access to all exercises, feedback and mentoring
- Supports 84 programming languages, a broad selection for learners
- Offers both local CLI and no-setup in-browser coding options
Exercism at a glance
- Website
- exercism.org
- Category
- Education & Learning › Learn to Code
- Type
- Website
- Pricing
- Free
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Exercism FAQ
Do I need to install programming tools locally to use Exercism?
No, the in-browser editor supports all 84 languages for no-setup practice, though a CLI workflow is also available for local development.
Is Exercism's mentoring service free?
Yes, all human mentoring on the platform is provided for free to users.
How many programming languages does Exercism support?
Exercism currently offers learning tracks for 84 programming languages.
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