Munder Difflin – Agent harness to run an office of your clones

Munder Difflin is a free, open-source multi-agent harness that works with twelve existing providers—including Gemini 3.8/3.7 Flash, Fable 5.1, GPT-6 Astra, Claude Code, Codex, Copilot, and Cursor—without extra cost. The Pro tier costs $150 for the first year then $20 monthly, adding the Stapler, per-seat orchestrators, sealed clone-to-clone messaging, and a Teams plan ($39 per seat monthly or $399 per seat yearly) that enables network access and future sandbox jobs. All code, protocol, and cryptography are MIT-licensed on GitHub; telemetry collects only non-identifying metrics and can be disabled via Do Not Track.