A universal resource directory collecting high-quality curated open source project lists on various topics, helping you find reliable tools in one place.

A massive collection of free programming eBooks from around the world, helping you save money and time by finding learning resources in one place.

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 curated list of Python libraries and tools covering development, data, AI, and more, helping you find reliable resources quickly.

This is the core source code of the Linux operating system, acting as the computer's brain to manage hardware and resources. It is suitable for those who want to deeply understand or modify the system layer.

A complete roadmap for free self-taught computer science education, gathering open course resources from top universities worldwide to help you master computer basics systematically.

A curated list of Go resources that helps you quickly find useful frameworks, libraries, and tools, saving you from searching everywhere.

This is a curated list of free computer science video courses from top universities globally, saving you search time and leading directly to the knowledge you want, covering basics to advanced topics.

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 Windows desktop utility that displays network speed, CPU, and memory usage in a floating window, with skin support.

A versatile security scanner that helps you check for vulnerabilities, secret leaks, or configuration errors in code, containers, and cloud settings.

A free hands-on LLM tutorial series derived from SJTU courses, teaching you to fine-tune, deploy, and explore large model technologies from scratch.

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.

A free, direct-access library of TV/radio logos and IPTV tools, helping you handle live stream logos, EPG, and format conversion.

One-click script to set up a private IPsec encrypted VPN server, allowing secure access to your home network from anywhere.

An open-source AI chat platform connecting all major LLMs, featuring search, code execution, and deep research, ideal for those wanting to privately deploy an AI assistant.

A comprehensive collection of cybersecurity resources curated by Omar Santos, including thousands of tools and learning materials for penetration testing and security research.

A self-contained offline survival computer system integrating Wikipedia, AI assistants, offline maps, and educational resources, keeping you informed without internet.