Open-Source AI Tools

A curated list of tutorials that walk you through rebuilding classic technologies from scratch.

A collection of many free and usable APIs, helping developers quickly find the APIs they need.

A free open-source online course platform for learning programming, mathematics, and computer science.

A collection of free programming books and tutorials from around the world, helping you save money on books and time on searching.

A cross-platform personal AI assistant, as flexible as a lobster, helping you handle various daily tasks.

An open-source study guide that teaches you how large-scale systems are designed and helps you prepare for system design interviews.

Provides interactive learning roadmaps for developers, helping to plan career growth paths.

A computer science self-study checklist to help you systematically prepare for programming interviews and become a software engineer.

Give AI coding assistants a "skill pack" and development methodology to make AI write code more professionally.

A senior engineer skill pack for AI coding assistants, making AI work more professionally.

A tool for optimizing AI coding assistant performance, making Claude Code and others smarter and safer when helping you write code.

A curated list of hands-on tutorials organized by programming language, helping you learn to code by building real projects.

A development framework that turns AI agents into a plugin ecosystem, letting every feature be flexibly loaded and combined like a plugin.

An AI assistant framework that grows with your usage, helping you build personalized agents.

A comprehensive collection of technical resources, manuals, cheat sheets, and toolchains, helping you quickly find the most practical technical materials.

An open-source collection that implements common algorithms in Python, one by one, for people to read and practice with.

A configuration file that makes the Claude Code coding assistant smarter and avoids common coding pitfalls.

An open-source AI coding agent that automatically writes code, fixes bugs, and runs tests in the terminal to help you complete coding tasks.

An open-source automation platform that connects apps and AI like building blocks to automate repetitive tasks.

A platform for obtaining and managing free domain names, allowing users to get a domain at zero cost for website building and development testing.

A command-line tool that can download videos and audio from almost any website, supporting highest quality, subtitles, and MP3 extraction.

An open-source machine learning framework that lets developers build and train their own AI models.

A web scraping and search API that helps AI agents and developers easily obtain web data.

A Rust museum exhibit fully autonomously developed and maintained by an AI agent, demonstrating programming capability without human intervention.