The Smartest Way to Explore & Learn Open Source

Wikis Are Dinosaurs. AI Learning Paths Are the Future

Open source is the backbone of the modern web. We decode complex codebases and forge learning paths that evolve as fast as the code does.

Discover & Request

Search for any open source project. Can't find it? Request it and we'll add it to our library.

Deep Research

Our engine performs a comprehensive analysis of the entire codebase to generate structured learning paths. This high-fidelity research can take up to 24 hours.

Your Learning Style

Choose how you learn best: Socratic questioning, Feynman technique, or traditional book format.

Browse Collections

Explore curated categories of open-source repositories

AI

Generative AI, agents, assistants, and foundation models

Data

SQL, NoSQL, and data storage engines

Robotics

Simulation, autonomous vehicles, and perception

Game Engines

Game development, rendering, and graphics

Crypto & Web3

Blockchain, smart contracts, and decentralized apps

Distributed Systems

Consensus, messaging, and coordination

File Systems

Storage, filesystems, and object stores

Machine Learning

Training, inference, and ML frameworks

Infrastructure

Cloud, containers, and orchestration tools

Compilers

Compilers, parsers, and language tooling

CLI Tools

Command-line utilities and terminal apps

Dev Tools

Developer productivity and workflow tools

Mobile

iOS, Android, and cross-platform apps

Frameworks and Apps

Web frameworks, UI libraries, and full-stack applications

Let your agents query os.ninja via MCP

Give any coding agent access to curated open-source knowledge — learning paths, repo summaries, and structured docs — through a standard MCP server.

Connect via MCP
agent — mcp client
$xh mcp enable
✓ MCP server enabled

> search("rust async runtime internals")
↳ tokio — 142 learning units
↳ async-std — 89 learning units

> get_learning_path("tokio", mode="feynman")
↳ Returning 14 structured chapters…
ready

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