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 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.

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.

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

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.

An open-source project simulating an AI hedge fund, featuring AI avatars of 19 investment masters like Buffett to analyze stocks and make decisions, for learning and entertainment only.

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

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

A locally deployable AI personal tutor supporting private models, helping you plan, answer questions, and generate quizzes like a dedicated teacher.

A collection of Android TV box apps focused on free VIP movies, foreign shows, and live TV, ideal for users who want to bypass official stores.