Open-source codebase for the world's famous free coding platform, offering complete curricula from beginner to full-stack development.

A website offering interactive learning roadmaps to help developers plan their technical growth across fields like frontend, backend, AI, and more.

A comprehensive guide to system design, helping you ace big tech interviews with included flashcards.

A systematic Python learning guide with 100-day daily tasks, suitable for absolute beginners, covering basic syntax to practical projects.

A comprehensive cheatsheet for cyber security, collecting common attack payloads and bypass techniques for penetration testing and CTF competitions, ideal for security researchers to reference quickly.

A web server that automatically handles HTTPS encryption certificates, simple to configure, ready to use, and more hassle-free than Nginx.

A configuration plugin that makes Claude Code write more reliable code, preventing AI hallucinations and over-engineering.

A powerful network packet sniffing tool that lets you intercept, view, and even modify all network requests from your device, essential for development debugging.

Official OWASP quick-reference guides for developers, covering best practices for common application security topics like password storage and authentication.

The world's most popular web server and reverse proxy tool, helping you handle website hosting, traffic distribution, and content caching with high performance and stability.

An open-source secret management platform that helps you centrally manage API keys and database passwords to prevent leaks and auto-sync to GitHub dev environments.

A mobile AI app by Google that lets you experience large language models and generative AI features offline, ensuring privacy and speed.

A PHP library that automatically identifies whether visitors are using a phone, computer, or tablet, along with specific browser and system models, handling device detection for you.

A powerful TV streaming server for Linux that converts TV signals into network streams and records programs, letting you watch TV on any device.

An Android video player supporting cloud drives, IPTV, and metadata scraping for phones and TVs, helping you build a private movie library.