education

:books: Freely available programming books

《Hello 算法》：动画图解、一键运行的数据结构与算法教程。支持简中、繁中、English、日本語，提供 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 等代码实现

Open source learning management system built on Frappe

Over 1000 flashcards to learn Rust, SQLite, Lua, C, Godot, or Wolfram Language from first principles. Written in markdown with script to convert them to Anki decks or PDF files.

Learn what AI writes, not just accept it. A Claude Code skill that turns AI-generated code into educational deep dives.

Evidence-based learning engine for Claude Code — first-principles curricula, free-recall verification with receipts, FSRS-scheduled memory, and explorable artifacts. Learn anything; keep it.

A tool to teach children perfect pitch

A Living Library You Can Talk To. Open-source educational platform with 30 historical figures from philosophy, science, art, mysticism, and activism. Stories, dialogues, AI conversation, multi-figure councils. Nonprofit, BYOK, self-hostable, no behavioral tracking.