Cmux – Coding Agent Multiplexer
HN, I'm stoked to share this product I've been working on non-stop for the past few weeks. It's an immersive GUI experience for working with many coding agents in parallel. The UX should be familiar to Claude Code users, but we took advantage of the GUI nature to add in a bunch more. cmux is early but certainly usable—almost all of our internal cmux development rolls through cmux itself. Please let me know your thoughts and feedback!
Cmux – Coding Agent Multiplexer launched on October 15, 2025 with 22 votes, #550 of 8,178 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
Cmux is a GUI application that enables users to work with multiple coding agents simultaneously in parallel. It offers an interface familiar to Claude Code users while adding additional features leveraging the graphical environment. The tool is in early stages but functional enough that its developers use it for their own internal development work. It is designed for developers who need to coordinate multiple AI coding agents on projects.
written from the facts on this page · September 2026
From the sources
A desktop app for isolated, parallel agentic development - coder/xum
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