🔥 Hidden Gems on GitHub That Every Developer (IT/Non-IT) Needs to Explore

1. freeCodeCamp

   1 53 422,961 10.0 TypeScript

   freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.

   

   🧠 1. FreeCodeCamp 📍 https://github.com/freeCodeCamp/freeCodeCamp  Why it's awesome:  It's not just a repo - it's a universe. FreeCodeCamp helps you learn to code for free with structured paths in Web Development, Data Science, Machine Learning, Python, DSA, and more. ✅ Best For: Beginners, career switchers  🔧 Tech Stack: HTML, CSS, JavaScript, Python, APIs  🌱 Bonus: Certification courses you can showcase on LinkedIn

2. InfluxDB

   www.influxdata.com featured

   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

3. build-your-own-x

   2 279 399,379 3.9 Markdown

   Master programming by recreating your favorite technologies from scratch.

   

   🚀 2. Build Your Own X 📍 https://github.com/codecrafters-io/build-your-own-x  Why it's awesome:  Want to build a compiler? An OS? A blockchain? This repo has guides to build nearly everything from scratch, making it ideal for deep learners. ✅ Best For: Intermediate to advanced devs  📘 Covers: OS, Git, Docker, Database, Neural Net  🧠 Pro Tip: Use it to create capstone projects or interview prep.

4. 30-seconds-of-code

   3 4 117,966 10.0 JavaScript

   Discontinued Short code snippets for all your development needs [Moved to: https://github.com/Chalarangelo/30-seconds-of-code] (by 30-seconds)

   🛠 3. 30 Seconds of Code 📍 https://github.com/30-seconds/30-seconds-of-code  Why it's awesome:  Bite-sized code snippets for developers in JavaScript, Python, React, and more. Perfect for quick learning and boosting productivity. ✅ Best For: Busy devs, frontend ninjas  ⚡ Use Case: Quickly copy-paste logic and speed up your workflow

5. awesome-nlp

   4 4 17,147 4.3

   :book: A curated list of resources dedicated to Natural Language Processing (NLP)

   

   🤖 4. Awesome AI Tools 📍 https://github.com/keon/awesome-nlp  Why it's awesome:  A treasure chest of Natural Language Processing libraries, datasets, and tools. Whether you're into ChatGPT or LLMs - this repo expands your AI arsenal. ✅ Best For: Data scientists, AI builders  💡 Bonus: Great for startups using AI in apps

6. project-based-learning

   5 207 235,509 0.0

   Curated list of project-based tutorials

   

   💻 5. Project-Based Learning 📍 https://github.com/practical-tutorials/project-based-learning  Why it's awesome:  Learn by building real projects in React, Vue, Go, ML, DevOps, and more. Structured tutorials that go beyond theory. ✅ Best For: Learners who hate theory  🚀 Hackathon-Ready Projects + Resume-Ready Work

7. public-apis

   6 414 355,559 3.5 Python

   A collective list of free APIs

   

   📊 6. Public APIs 📍 https://github.com/public-apis/public-apis  Why it's awesome:  A massive list of free APIs for development, testing, and integration. You can use them to build apps, dashboards, or even just explore new ideas. ✅ Best For: App devs, students, startup founders  🧠 Ideas: Weather app, crypto tracker, quote bot, anime finder

8. developer-roadmap

   7 2,162 330,907 9.9 TypeScript

   Interactive roadmaps, guides and other educational content to help developers grow in their careers.

   

   🔥 9. Developer Roadmaps 📍 https://github.com/kamranahmedse/developer-roadmap  Why it's awesome:  Visual learning paths for Frontend, Backend, DevOps, AI, DBMS, and more. It helps you stay on track with skills demanded in the real world. ✅ Best For: Career clarity seekers  📌 Update your resume based on this map

9. Stream

   getstream.io featured

   Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.

   

10. Awesome-Hacking

    8 13 94,698 3.8

    A collection of various awesome lists for hackers, pentesters and security researchers

    

    🔐 11. Awesome Hacking 📍 https://github.com/Hack-with-Github/Awesome-Hacking  🕵️ Ethical hacking, red teaming, pentesting tools, and more.  ✅ Best For: Cybersecurity enthusiasts, ethical hackers

11. tech-interview-handbook

    9 130 127,560 7.3 TypeScript

    💯 Curated coding interview preparation materials for busy software engineers

    

    🧑‍🏫 12. Tech Interview Handbook 📍 https://github.com/yangshun/tech-interview-handbook  🧠 Covers everything from resume tips to behavioral rounds and coding questions.  ✅ Best For: FAANG aspirants, job switchers

12. system-design-primer

    10 395 311,062 3.0 Python

    Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

    

    📈 14. System Design Primer 📍 https://github.com/donnemartin/system-design-primer  🧱 A roadmap for scalable systems like YouTube, Netflix, and Twitter.  ✅ Best For: Backend, SDE-2+, architects

13. Prompt-Engineering-Guide

    11 92 59,384 8.5 MDX

    🐙 Guides, papers, lecture, notebooks and resources for prompt engineering

    

    📷 16. Awesome-Prompt-Engineering 📍 https://github.com/dair-ai/Prompt-Engineering-Guide  🧠 Master prompt crafting for ChatGPT, Claude, etc.  ✅ Best For: AI creators, marketers, content writers

14. awesome-cheatsheets

    12 33 42,941 5.1 JavaScript

    👩‍💻👨‍💻 Awesome cheatsheets for popular programming languages, frameworks and development tools. They include everything you should know in one single file.

    

    📦 18. Awesome Cheatsheets 📍 https://github.com/LeCoupa/awesome-cheatsheets  📜 One-liners and syntax reminders for 20+ languages/tools.  ✅ Best For: Everyone - literally!

15. realworld

    13 129 81,962 8.9 TypeScript

    "The mother of all demo apps" — Exemplary fullstack Medium.com clone powered by React, Angular, Node, Django, and many more

    

    ⚙️ 19. RealWorld Project Examples 📍 https://github.com/gothinkster/realworld  🌍 Build real apps (Medium clone) using any frontend/backend stack.  ✅ Best For: Full-stack learners

16. engineer-manager

    14 4 10,646 6.5 JavaScript

    A list of engineering manager resource links.

    

    👷 20. Engineering Manager Resources 📍 https://github.com/ryanburgess/engineer-manager  📈 Guides, books, and practices for devs moving into leadership.  ✅ Best For: Team leads, senior devs, startup founders

17. awesome-productivity

    15 2 2,860 0.0

    A curated list of delightful productivity resources.

    

    🧰 22. Awesome Productivity 📍 https://github.com/jyguyomarch/awesome-productivity  ⏳ Tools & techniques to stay productive as a dev  ✅ Best For: Indie hackers, freelancers, remote workers

18. awesome-design-systems

    16 10 17,949 5.8

    💅🏻 ⚒ A collection of awesome design systems

    

    🎨 23. Awesome Design Systems 📍 https://github.com/alexpate/awesome-design-systems  🌈 Real-world design systems like Google, IBM, Shopify  ✅ Best For: UI/UX designers, frontend teams

19. awesome-datascience

    17 11 26,886 7.1

    :memo: An awesome Data Science repository to learn and apply for real world problems.

    

    🔬 24. Awesome Data Science 📍 https://github.com/academic/awesome-datascience  📊 Libraries, books, datasets, and career guides  ✅ Best For: Aspiring data scientists, analytics students

20. awesome-web-security

    18 3 12,115 2.4

    🐶 A curated list of Web Security materials and resources.

    

    🌐 25. Awesome Web Security 📍 https://github.com/qazbnm456/awesome-web-security  🔒 Vulnerabilities, XSS, OWASP practices, exploit writeups  ✅ Best For: Web developers & ethical hackers

21. awesome-readme

    19 35 19,394 7.0

    A curated list of awesome READMEs

    

    🧾 27. Awesome README 📍 https://github.com/matiassingers/awesome-readme  📘 Learn how to craft professional README files  ✅ Best For: OSS contributors, GitHub profile builders 📅 28. Awesome Events & Conferences

22. first-contributions

    20 99 49,303 10.0

    🚀✨ Help beginners to contribute to open source projects

    

    🌱 30. First Contributions 📍 https://github.com/firstcontributions/first-contributions  🚀 The best way to make your first open-source PR  ✅ Best For: Beginners entering the GitHub world

23. SaaSHub

    www.saashub.com featured

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    

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