198.4k
Python Algorithms
A comprehensive collection of all algorithms implemented in Python, suitable for learning and teaching purposes.
🎓
Learning & Career🐍
Python👨💻
Development
6 Open Source Alternatives to LeetCode
There are 6 open-source alternatives to LeetCode in this directory. The most popular is Python Algorithms with 198.4k GitHub stars, followed by JavaScript Algorithms(195.8k stars). All are open source, free to use, and many can be self-hosted.
Quick comparison
| # | Tool | Stars | Language | License |
|---|---|---|---|---|
| 1 | Python Algorithms A comprehensive collection of all algorithms implemented in Python, suitable for learning and teaching purposes. | 198.4k | Python | MIT License |
| 2 | JavaScript Algorithms A comprehensive collection of algorithms and data structures implemented in JavaScript, complete with explanations and additional reading links. | 195.8k | JavaScript | MIT License |
| 3 | Tech Interview Handbook Curated coding interview preparation materials for busy software engineers, covering essential topics, challenges, and tips. | 138.7k | TypeScript | MIT License |
| 4 | 30 Seconds of Code A collection of coding articles and snippets that help you enhance your development skills quickly and efficiently. | 123.1k | JavaScript | Creative Commons Attribution 4.0 International |
| 5 | JavaScript Comprehensive collection of algorithms and data structures implemented in JavaScript, designed for beginners and following best practices. | 33.0k | JavaScript | GNU General Public License v3.0 |
| 6 | CS-Interview-Knowledge-Map Enhance your technical interview preparation with a comprehensive map covering JavaScript, networking, browser technologies, performance optimization, security, frameworks, Git, data structures, and algorithms. | 18.3k | — | — |
All open-source alternatives to LeetCode
195.8k
JavaScript Algorithms
A comprehensive collection of algorithms and data structures implemented in JavaScript, complete with explanations and additional reading links.
👨💻
Development🎓
Learning & Career🟡
JavaScript🔬
Data Science
138.7k
Tech Interview Handbook
Curated coding interview preparation materials for busy software engineers, covering essential topics, challenges, and tips.
🎓
Learning & Career💡
Best Practices
123.1k
30 Seconds of Code
A collection of coding articles and snippets that help you enhance your development skills quickly and efficiently.
👨💻
Development🟡
JavaScript🕶️
Awesome🎓
Learning & Career
33.0k
JavaScript
Comprehensive collection of algorithms and data structures implemented in JavaScript, designed for beginners and following best practices.
🎓
Learning & Career🟡
JavaScript👨💻
Development
18.3k
CS-Interview-Knowledge-Map
Enhance your technical interview preparation with a comprehensive map covering JavaScript, networking, browser technologies, performance optimization, security, frameworks, Git, data structures, and algorithms.
👨💻
Development📚
Documentation🎓
Learning & Career
Frequently asked questions
What are the best open-source alternatives to LeetCode?
The top three are Python Algorithms(198.4k stars), JavaScript Algorithms(195.8k stars), Tech Interview Handbook(138.7k stars). All are open source and free to use.
Are these alternatives to LeetCode free?
Yes. Every tool listed here is open source and free to use in your own projects. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.
Can I self-host an alternative to LeetCode?
Many of the alternatives listed are self-hostable. Each tool's page lists hosting details, system requirements, and licensing terms.
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