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

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

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.

This is a comprehensive collection of classic algorithms implemented in Python, suitable for students and job seekers to practice programming basics and prepare for technical interviews, with clear and runnable code.

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.

Google's open-source machine learning framework that helps you easily build and deploy AI models, suitable for research and development.

This tool lets you automate tasks like building blocks, connecting various apps with code and AI support, keeping data under your control without subscription fees.

A comprehensive Java interview and backend development guide covering basics, architecture, and AI apps to help you ace interviews and get promoted.

An open-source AI coding assistant running on your terminal or desktop, helping write code and fix bugs for free without uploading data to the cloud.

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 free debugging tool designed for Windows to help you analyze software without source code, suitable for virus scanning or studying internal program principles.

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

radare2 is a professional command-line reverse engineering tool that helps you deeply analyze software, viruses, and binary files, essential for security researchers and hackers.