About Isomux

The team behind Isomux

Isomux is built by Nil Mamano, its founder. Isomux LLC is the company behind it. Nil has a PhD in computer science from UC Irvine, was a senior software engineer at Google, and co-wrote Beyond Cracking the Coding Interview.

Isomux started in March 2026 as a nicer way to manage agents. Nil had a mix of local and remote sessions: for the local ones he had to keep his laptop open, and for the remote ones he had to ssh all the time. He couldn't check in from his phone and he had no good way to collaborate with others. The fix was to run every agent on a server with a browser UI, so all his devices see the same agents. The name is short for Isometric Multiplexer.

Read the technical deep dive, or connect with Nil on X, LinkedIn, and GitHub.

Enterprise

Organizations of more than 10 people that run Isomux in production need a commercial license from Isomux LLC, self-hosted or hosted. Engineers set up the agents, non-technical employees build their own tools with them, and engineers join the same conversation when they need help. As of September 2026, we are running a pilot with a YC-backed healthcare company. Read Isomux for Enterprise.

Support

Ask in Discord or write to llc@isomux.com. We aim to respond within 24 hours, but do not commit to a response time. Bug reports go to GitHub issues.

Key facts

Frequently asked questions

What is a meta-harness?

Claude Code and Codex are harnesses around models. A meta-harness sits one level above them and runs them side by side. Isomux adds, among other things, messaging between agents, a shared task board, multiplayer, and a mobile UI.

Which agents does Isomux support?

Claude Code, Codex, and OpenCode. Codex and OpenCode come bundled with Isomux; OpenCode needs Linux or macOS.

Do I need API keys?

No. Isomux works with your subscriptions: you sign in with your Claude or ChatGPT plan from inside the office. OpenCode also offers free models.

Is Isomux free?

Isomux is free for personal use and for organizations of up to 10 people, and anyone can evaluate, develop, and test with it. Larger organizations need a commercial license for production use, self-hosted or hosted. Hosted Isomux costs 8 EUR/month (Entry) or 17 EUR/month (Poweruser) for the server; agents run on your own Claude or ChatGPT plan.

Is Isomux open source?

It is source-available under the Business Source License 1.1. Each version converts to the Apache License 2.0 two years after its first release, and releases through v2026.9.10 remain available under the MIT License.

What is the tech stack?

Isomux is written in TypeScript. The server runs on Bun and keeps the office in plain files on disk, with no database. The browser UI is React, kept in sync over WebSockets. Claude agents run through the Claude Agent SDK, Codex agents through the Codex app server, and OpenCode agents through the OpenCode server.

Where does my data live?

On the server that runs your office. A hosted office runs entirely on your own server, with no Isomux cloud service in between, and keeps seven daily backups.

Is Isomux ready for production?

It is in beta. Bug reports welcome.

Related projects

• Omnigent, from Databricks, open-sourced under Apache 2.0 in June 2026. Its README lists Claude Code, Codex, Cursor, OpenCode, Hermes, and Pi.
• qm, from Y Combinator, is a multiplayer agent harness in Slack and on the web, under the MIT License. Pi, OpenCode, Codex, and Claude Code drive its core.
• Orca, from Stably AI, is an agent development environment that runs Claude Code, Codex, OpenCode, Pi, and other CLI agents in parallel, with desktop apps and iOS and Android apps. It is MIT licensed.
• Munder Difflin, by GitHub user chaitanyagiri, is a local multi-agent harness that runs Claude Code, Codex, OpenCode, Pi, and other agent CLIs as an office of agents at desks. It is MIT licensed.
• OpenClaw is an open-source AI assistant that runs on your own computer and talks to you through apps such as Discord, Slack, Telegram, and WhatsApp. Peter Steinberger and the community built it; the OpenClaw Foundation develops it under the MIT License.
• Hermes Agent is a self-improving AI agent from Nous Research, reachable from the CLI, Telegram, Discord, Slack, WhatsApp, and Signal. It is MIT licensed.
• Pi is a minimal agent harness that Mario Zechner started in 2025, now from Earendil Inc. under the MIT License.
• AdaL, from SylphAI, is an automation-first agent harness named after Ada Lovelace. It works with Claude, GPT, Gemini, and local models, among others.
• Cursor is a coding agent from Anysphere, which SpaceX acquired in August 2026.
• Grok Bot is a team of always-on agents from SpaceXAI, launched in August 2026 for SuperGrok and Cursor subscribers.
• Muse is a personal AI agent from Meta, rolling out in the US since September 2026 on iOS, Android, and muse.ai. It is free for most uses, with subscription plans.