Top 8 algorithm-competition Open-Source Projects

1. TheAlgorithms

   1 69 222,067 9.0 Python

   All Algorithms implemented in Python

   

   Project mention: Stop Hoarding Junk Code! Your Algorithm Learning Bible Awaits | dev.to | 2025-09-01

   git clone https://github.com/TheAlgorithms/Python.git cd Python

2. SaaSHub

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3. interviews

   2 3 64,936 3.6 Java

   Everything you need to know to get the job.

   

4. C-Plus-Plus

   3 3 34,367 8.1 C++

   Collection of various algorithms in mathematics, machine learning, computer science and physics implemented in C++ for educational purposes.

   

5. LeetCode-Go

   4 2 33,774 4.3 Go

   ✅ Solutions to LeetCode by Go, 100% test coverage, runtime beats 100% / LeetCode 题解

   

6. C

   5 6 22,008 2.3 C

   Collection of various algorithms in mathematics, machine learning, computer science, physics, etc implemented in C for educational purposes.

   

   Project mention: guiarstr VS C - a user suggested alternative | libhunt.com/r/guiarstr | 2025-07-24

   GuiarStr was built as a modern, lightweight alternative to older string manipulation libraries like sds. It focuses on simplicity, clean API, and zero dependencies while providing commonly needed features like trim, split, replace, tolower, and toupper.

7. cp-algorithms

   6 13 10,786 8.8 C++

   Algorithm and data structure articles for https://cp-algorithms.com (based on http://e-maxx.ru)

   

8. cpeditor

   7 1 2,159 5.8 C++

   The IDE for competitive programming :tada: | Fetch, Code, Compile, Run, Check, Submit :rocket:

   

9. LeetCode-in-Java

   8 1 11 8.8 Java

   Java-based LeetCode algorithm problem solutions, regularly updated.

   

algorithm-competitions related posts

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• A note from our sponsor - SaaSHub
  www.saashub.com | 21 Jun 2026

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