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freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.
😎 Awesome lists about all kinds of interesting topics
📚 Freely available programming books
Interactive roadmaps, guides and other educational content to help developers grow in their careers.
📝 Algorithms and data structures implemented in JavaScript with explanations and links to further readings
A book series (2 published editions) on the JS language.
🙃 A delightful community-driven (with 2,400+ contributors) framework for managing your zsh configuration. Includes 300+ optional plugins (rails, git, macOS, hub, docker, homebrew, node, php, python…
A curated list of awesome Go frameworks, libraries and software
💯 Curated coding interview preparation materials for busy software engineers
A collection of (mostly) technical things every software developer should know about
Design patterns implemented in Java
The Python micro framework for building web applications.
scikit-learn: machine learning in Python
Original Apollo 11 Guidance Computer (AGC) source code for the command and lunar modules.
⚡ Delightful Node.js packages and resources
Google Chrome, Firefox, and Thunderbird extension that lets you write email in Markdown and render it before sending.
A list of cool features of Git and GitHub.
The Big List of Naughty Strings is a list of strings which have a high probability of causing issues when used as user-input data.
An ultra-simplified explanation to design patterns
🐠 Babel is a compiler for writing next generation JavaScript.
🌐 Front End interview preparation materials for busy engineers (updated for 2025)
General-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP…