HarnessMD/munder-difflin

Munder Difflin is a multi-agent harness that orchestrates multiple AI coding agents on your local machine.

The tool solves the problem of running multiple AI coding assistants in parallel while respecting their hourly rate limits. It wraps existing CLI tools and subscriptions you already pay for—including Claude Code, Gemini CLI, OpenAI Codex, xAI Grok, Kimi Code, and others—and coordinates them as a team of agents working together. A primary agent called Michael acts as the orchestrator, routing tasks between agents, managing their memory, and visualizing their work as avatars on a shared office floor. The system runs locally and works with bring-your-own API keys or local language models.

The tool suits developers who want to maximize the value of multiple AI coding subscriptions by running them concurrently on a single machine. It works best for projects where you can decompose work into parallel tasks that different agents can handle simultaneously. The local-first approach means no data leaves your machine, and the free, open-source nature removes licensing barriers to adoption. The desktop application provides a visual interface showing agent activity in real time rather than requiring terminal-only interaction.

The project maintains active development with regular updates and a changelog tracking changes. The maintainers welcome community contributions and provide documentation including guides and postmortems on the blog. The tool runs on macOS, Windows, and Linux, and is built with Electron, React, TypeScript, and specialized libraries for terminal emulation and graphics rendering.