Master programming by recreating your favorite technologies from scratch.

😎 Awesome lists about all kinds of interesting topics

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

A collective list of free APIs

📚 Freely available programming books

An opinionated list of Python frameworks, libraries, tools, and resources.

A list of Free Software network services and web applications which can be hosted on your own servers

Curated list of project-based tutorials

All Algorithms implemented in Python

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

An Open Source Machine Learning Framework for Everyone

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

Flutter makes it easy and fast to build beautiful apps for mobile and beyond

A curated list of awesome Go frameworks, libraries and software

Stable Diffusion web UI

DigitalPlat FreeDomain: Free Domain For Everyone

A feature-rich command-line audio/video downloader

Command-line program to download videos from YouTube.com and other video sites

Display and control your Android device

Production-ready platform for agentic workflow development.

Crack LeetCode, not only how, but also why.

The agent engineering platform

Microsoft PowerToys is a collection of utilities that supercharge productivity and customization on Windows

The open source coding agent.

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

Coding articles to level up your development skills

A framework for building native applications using React

《Hello 算法》：动画图解、一键运行的数据结构与算法教程。支持简中、繁中、English、日本語，提供 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 等代码实现

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

Virtual whiteboard for sketching hand-drawn like diagrams