Best Open Source free Libraries
A curated list of the most popular GitHub repositories tagged with free. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.
#1codecrafters-io/build-your-own-x
Master programming by recreating your favorite technologies from scratch.
#2public-apis/public-apis
A collective list of free APIs
#3DigitalPlatDev/FreeDomain
DigitalPlat FreeDomain: Free Domain For Everyone
#4justjavac/free-programming-books-zh_CN
:books: 免费的计算机编程类中文书籍，欢迎投稿
#5cloudcommunity/Free-Certifications
A curated list of free courses with certifications. Also available at https://free-certifications.com/
#6RocketChat/Rocket.Chat
The Secure CommsOS™ for mission-critical operations
#7DataTalksClub/data-engineering-zoomcamp
Data Engineering Zoomcamp is a free 9-week course on building production-ready data pipelines. The next cohort starts in January 2026. Join the course here 👇🏼
#8luong-komorebi/Awesome-Linux-Software
🐧 A list of awesome Linux softwares
#9zulip/zulip
Zulip server and web application. Open-source team chat that helps teams stay productive and focused.
#10is-a-dev/register
Grab your own sweet-looking '.is-a.dev' subdomain.
#11StartBootstrap/startbootstrap-sb-admin-2
A free, open source, Bootstrap admin theme created by Start Bootstrap
#12pterodactyl/panel
Pterodactyl® is a free, open-source game server management panel built with PHP, React, and Go. Designed with security in mind, Pterodactyl runs all game servers in isolated Docker containers while exposing a beautiful and intuitive UI to end users.
#13cugu/awesome-forensics
⭐️ A curated list of awesome forensic analysis tools and resources
#14awesome-vpn/awesome-vpn
Free proxy,VPN,免费代理,网络加速,科学上网,机场订阅,翻墙,梯子 無料プロキシ 무료 프록시 Gratis gratuit Бесплатный прокси gratuito Gratis Darmowe Ücretsiz بروكسي مجاني मुफ्त प्रॉक्सी พร็อกซีฟรี miễn phí
#15Xovee/uestc-course
🎓电子科技大学 📔课程资料
#16vava-nessa/free-coding-models
Find, benchmark and install in CLI 170+ FREE coding LLM models across 15+ providers in real time
#17alistaitsacle/free-llm-api-keys
Free LLM API keys for GPT-5.5, Claude, DeepSeek, Gemini, Grok — copy, paste, use. Updated 3-5x daily. No credit card needed.
#18Scriptez1/RedXFreeSteamInstaller
It allows you to automatically add all free and paid games and DLCs to your Steam account securely and for free. - Steam hesabınıza tüm ücretsiz ve ücretli oyunları ve DLC'leri güvenli ve ücretsiz bir şekilde otomatik olarak eklemenizi sağlar.
#19dpangestuw/Free-Proxy
Free Proxy List 🔄 Update Every 5 Minutes
#20indmdev/Free-Telegram-Store-Bot
This is 100% Free Shop Bot, Is a Telegram Store Bot you can use for selling your products and services and managing your products and orders. You customers can easily use the Auto Buy Bot to shop on you store with confidence using this Auto shop bot.
#21Skillter/ProxyGather
Sophisticated proxy scraper and checker
#22elkimek/get-based
Free, open-source blood work dashboard — AI-powered PDF import, DNA raw data analysis (42 SNPs), trend charts, and personalized health insights for 287+ biomarkers. Local-first, no account required.