Master programming by recreating your favorite technologies from scratch.

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

A collective list of free APIs

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

A complete computer science study plan to become a software engineer.

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

All Algorithms implemented in Python

📝 Algorithms and data structures implemented in JavaScript with explanations and links to further readings

A collection of inspiring lists, manuals, cheatsheets, blogs, hacks, one-liners, cli/web tools and more.

An Open Source Machine Learning Framework for Everyone

A book series (2 published editions) on the JS language.

AutoGPT is the vision of accessible AI for everyone, to use and to build on. Our mission is to provide the tools, so that you can focus on what matters.

Master the command line, in one page

Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.

💯 Curated coding interview preparation materials for busy software engineers

《Hello 算法》：动画图解、一键运行的数据结构与算法教程。支持 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 代码。简体版和繁体版同步更新，English version in translation

Production-ready platform for agentic workflow development.

A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev

A set of beautifully-designed, accessible components and a code distribution platform. Works with your favorite frameworks. Open Source. Open Code.

A collection of (mostly) technical things every software developer should know about

Clean Code concepts adapted for JavaScript

Design patterns implemented in Java

Storybook is the industry standard workshop for building, documenting, and testing UI components in isolation

Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one

Linux, Jenkins, AWS, SRE, Prometheus, Docker, Python, Ansible, Git, Kubernetes, Terraform, OpenStack, SQL, NoSQL, Azure, GCP, DNS, Elastic, Network, Virtualization. DevOps Interview Questions

A list of awesome beginners-friendly projects.

12 weeks, 26 lessons, 52 quizzes, classic Machine Learning for all

Explain complex systems using visuals and simple terms. Help you prepare for system design interviews.