
π 15 Must-Know GitHub Repositories for Coders (Learning, Job Prep & Projects)
If you're a coder looking to level up your skills, prepare for interviews, or build solid projects, GitHub has a goldmine of free resources waiting for you.
Hereβs a handpicked collection of 15 GitHub repositories that every aspiring and professional coder should know in 2025! π
1. freeCodeCamp π

freeCodeCamp/freeCodeCamp
GitHub URL: freeCodeCamp
One of the biggest open-source coding education platforms. Offers thousands of hours of coding challenges, projects, and certifications β completely free!
2. The Algorithms - Python π

TheAlgorithms/Python
GitHub URL: TheAlgorithms/Python
Want to master algorithms and data structures? This repo is a library of algorithms implemented in Python with easy-to-understand code examples.
3. EbookFoundation Free Programming Books π

EbookFoundation/free-programming-books
GitHub URL: EbookFoundation/free-programming-books
The most legendary repo β thousands of free books, courses, and tutorials on programming, web dev, AI, and more. Bookmark it!
4. Developer Roadmap π€οΈ

kamranahmedse/developer-roadmap
GitHub URL: kamranahmedse/developer-roadmap
Clear visual maps that show you exactly what to learn step-by-step for becoming a Frontend, Backend, DevOps, or React Developer.
5. 30 Days of JavaScript πβ¨

Asabeneh/30-Days-Of-JavaScript
GitHub URL: Asabeneh/30-Days-Of-JavaScript
A brilliant 30-day coding challenge that teaches JavaScript with exercises and mini projects. Perfect for beginners!
6. Build your own X π οΈπ§©

danistefanovic/build-your-own-x
GitHub URL: danistefanovic/build-your-own-x
An exciting collection showing you how to build everything from scratch β your own database, blockchain, compiler, and even your own operating system!
7. Awesome Interview Questions π―

DopplerHQ/awesome-interview-questions
GitHub URL: DopplerHQ/awesome-interview-questions
Curated lists of coding and system design questions asked in real interviews. A must-have for job seekers!
8. Project-Based Learning π₯π»

practical-tutorials/project-based-learning
GitHub URL: practical-tutorials/project-based-learning
The best way to learn is by building. Tons of project ideas categorized by tech stack (Python, JavaScript, Go, etc.).
9. System Design Primer ποΈ

donnemartin/system-design-primer
GitHub URL: donnemartin/system-design-primer
A lifesaver for anyone preparing for FAANG-level system design interviews. Explains how large systems are built with real-world examples.
10. Coding Interview University ππ

jwasham/coding-interview-university
GitHub URL: jwasham/coding-interview-university
A complete CS self-study plan to land your dream software engineering job. Designed by someone who actually made it to Google!
11. JavaScript Algorithms and Data Structures π§ β¨

trekhleb/javascript-algorithms
GitHub URL: trekhleb/javascript-algorithms
Serious about JavaScript? This repo implements data structures and algorithms using JavaScript β explained step-by-step.
12. App Ideas Collection π‘π±

florinpop17/app-ideas
GitHub URL: florinpop17/app-ideas
A list of app ideas divided by beginner, intermediate, and advanced levels β with project descriptions and features!
13. OSSU - Open Source Computer Science Degree ππ»

ossu/computer-science
GitHub URL: ossu/computer-science
Study computer science like youβre attending MIT β but completely free, using OSSU curated open courseware.
14. Public APIs ππ

public-apis/public-apis
GitHub URL: public-apis/public-apis
A massive list of free APIs you can use to build amazing apps without building a backend yourself.
15. Awesome-Portfolio-Websites ππ₯οΈ

smaranjitghose/awesome-portfolio-websites
GitHub URL: smaranjitghose/awesome-portfolio-websites
Want to build a stunning portfolio? This repo shares templates, inspirations, and source codes for making professional portfolio websites.
π― Final Words:
- Whether youβre a beginner, a job hunter, or a seasoned developer, these 15 GitHub repositories are pure treasure.
- Bookmark them, practice daily, contribute if you can, and watch yourself grow massively as a developer. π
- Remember: Consistency beats talent when it comes to mastering coding!