Best open-source Learning Resources projects

An open-source introductory systems programming textbook in C, used by the University of Illinois CS 341 course.

An offline-first, MIT-licensed learning platform bundling competition problems, exam prep, civil service materials, Mao Zedong texts and WorldSkills courses in one app or website.

A model-agnostic Agent Skill for Chinese and English academic editing that trims formulaic prose while keeping evidence, citations and author voice.

A free, open-source Chinese guide for people who just lost their job, covering severance, unemployment benefits, medical insurance, housing fund, job search and cash flow.

A launcher that takes an arXiv paper ID and links out to reading, translation, search and discussion tools, via a web page or Tampermonkey script.

A single-page static site showing a Chinese character's oracle bone, small seal, traditional and simplified forms with Shuowen, pronunciation and phonetic-family data.

A free, bilingual 3D museum in the browser where young children and their grown-ups explore prehistoric animals across land, sea, and sky.

A learning repo of 30 runnable Jupyter notebooks that walk through agent memory techniques for LLM agents, from conversation buffers to Mem0, Letta, Zep and Graphiti.

An interactive, offline-capable web app that reconstructs the local night sky in the browser for any place and time.

A learn-by-building ML course: a from-scratch NumPy deep learning framework (CLI) plus 350+ browser-based coding questions.

Companion code for the book Designing Multi-Agent Systems, centered on PicoAgents, a multi-agent framework built from scratch for teaching.

An open, beginner-friendly book that follows a silicon wafer from sand to finished chip, covering the fab process flow, test and packaging.

A free, open-source Chinese-language book on AI Agent design principles and engineering practice, with 109 companion experiments and downloadable PDF/EPUB.

A curated Markdown knowledge base of 923 ML papers, lectures and articles, plus a small NumPy-only custom classifier and regressor called APRL.

A bilingual tutorial and source-code walkthrough of the Pi-Agent SDK, with a companion sample project and an AI-assistant skill for building agents.

A curated, categorized list of privacy- and security-focused software and online services, from password managers to operating systems.

A long-running list of ReactJS interview questions with answers, covering core React, Router, Redux, testing and React Native.

A guide applying Robert C. Martin's Clean Code principles to JavaScript, with bad and good code examples for naming, functions, classes and SOLID.

A collection of 69 product management skills and 42 chained workflows for Claude Code and Cowork, covering discovery, strategy, execution, launch and growth.

A documentation site generator built on Nuxt that lets you write docs in Markdown with Vue components.