Srcbook

Srcbook is an open-source TypeScript-centric notebook and app development platform that runs locally on your machine. Built by srcbookdev and licensed under Apache 2.0, it lets developers create, run, and share TypeScript notebooks with a web interface. The GitHub README notes that Srcbook is not under active development.

What It Is

Srcbook is a local-first interactive programming environment for TypeScript. It functions like a notebook (similar to Jupyter, but for TypeScript/JavaScript), where users can write and execute code cells, annotate with Mermaid diagrams, and export notebooks to a valid markdown format (.src.md). It runs as a CLI application that spins up a local web interface, accessible at http://localhost:2150 by default.

Core Features

• Create, run, and share TypeScript notebooks with a local web UI
• Export notebooks to .src.md markdown format
• AI-assisted exploration and iteration (requires a user-supplied API key, with Anthropic's claude-3-5-sonnet-latest recommended)
• Diagramming support via Mermaid for rich visual annotations
• Powered by Node.js (requires Node 18+)

Setup Path

Srcbook is designed for minimal setup. The recommended approach is to run it directly via npx srcbook@latest start without a global install, ensuring the latest version is always used. Docker is also supported for containerized environments. Users bring their own AI API key, configured through the web interface after startup.

Architecture and Deployment Model

The tool runs entirely on the user's local machine — there is no cloud dependency for the core notebook functionality. AI features are opt-in and require an external API key. Analytics collection is included but can be disabled by setting SRCBOOK_DISABLE_ANALYTICS=true in the environment. The source code is publicly available on GitHub under the Apache License 2.0, with 3,441 stars and 312 forks as listed on the repository page.

Current Status: Not Under Active Development

The Srcbook GitHub README explicitly states: "Srcbook is not under active development." The repository's last push was April 2026, and the project appears to have transitioned — the srcbook.com domain now redirects to Mocha (getmocha.com), an AI-powered no-code website builder by Axilla, Inc., which itself has announced a shutdown. Srcbook remains available as an open-source project for self-hosting and community use, but prospective users should be aware that no active maintenance is ongoing.