Open source Conductor alternative for Claude Code and Codex
Conductor is joining Meta and you want your parallel agents somewhere you can read the code. Here is the one that is free and MIT, and where it falls short.
Short answer: MightyMouse is a free, MIT open source Conductor alternative for the Mac: it runs Claude Code and Codex agents side by side, each on its own branch, and lets you answer them from your phone. It picks up your existing Conductor workspaces, and the code is on GitHub at royherma/mightymouse.
The short version: MightyMouse runs your coding agents on your own computer and puts them on your phone. Since 8 November 2026 the whole app is open source under the MIT license, so you can read it, build it and change it. Nothing in it can be switched off by a company that has moved on.
Why people are looking for a Conductor alternative
Per Conductor's own announcement, Conductor is joining Meta. New signups and downloads stopped on 4 November. Conductor Cloud goes read-only on 13 November and shuts down on 20 November, when data deletion begins. The Mac app keeps getting new models and critical fixes until early 2027. These are their dates, so check the announcement for any change.
If you used the Mac app, the practical risk is early 2027, not this month. If you used Cloud, the date that matters is 13 November. Either way, an app whose code is public is one nobody can take away.
How to move your work over
Your repos and branches are plain git folders, so there is nothing to export. The one thing that lives only in Conductor is your chat history, and MightyMouse reads that straight from your computer.
- Open MightyMouse and go to Code. Your Conductor workspaces are listed under From Conductor.
- Click Continue here on one. It starts a Claude Code session in the same folder, on the same branch, with the end of the old chat so the agent knows where it stopped.
- Repeat for the rest. Nothing is uploaded and Conductor itself is left untouched.
One catch: a workspace that only exists in Conductor Cloud has nothing on your computer to read. Conductor says you can right-click it and choose Transfer to local first. The longer walk-through is in how to migrate from Conductor.
What you get
- Agents side by side. Start several agents at once, up to six per tab. Each one gets its own branch in its own folder, so they never trip over each other. Review the changed files, open the pull request and merge without leaving the app.
- Your agents, your plan. It runs Claude Code, Codex, Cursor and OpenCode signed in with your own accounts. There is no MightyMouse model to pay for.
- Answer from your phone. When an agent asks a question, the choices show up as buttons on your lock screen. Tap one and the work carries on. Approvals ask for Face ID first.
- Agents keep going when you leave. Turn it on and your computer stays awake with the lid shut, so busy agents keep working and your phone can still reach them.
MightyMouse vs Conductor vs T3 Code
T3 Code is the other free, open source (MIT) choice, so it belongs in any honest comparison. Facts about Conductor and T3 Code are from their own sites and repo as of 8 November 2026.
- Open source. MightyMouse: yes, MIT. T3 Code: yes, MIT.
- Runs on. MightyMouse: Mac only. T3 Code: Mac, Windows and Linux. Conductor: Mac only.
- Future. MightyMouse and T3 Code: active. Conductor: Cloud ends 20 November and the Mac app winds down in early 2027.
- Phone. MightyMouse: lock-screen answers, plus your live screen, trackpad and keyboard. T3 Code: phone apps for following your agents. Conductor: an iPhone app that only worked with Cloud workspaces.
- Your Conductor workspaces. MightyMouse: listed and continued in one click. The others: not applicable.
- Cost. MightyMouse: free for everything on your computer. T3 Code: free. Conductor: no new signups.
Side-by-side detail is on MightyMouse vs Conductor and MightyMouse vs T3 Code.
What it costs you
The honest tradeoffs. MightyMouse is Mac only, so if you need Linux or Windows, T3 Code is the better pick today. Your computer does the work, so it has to stay on (the lid can be closed), unlike Conductor Cloud, which gave every workspace its own cloud machine and let teams share a workspace. MightyMouse has neither shared team workspaces nor cloud computers. Continuing an old Conductor chat starts it in Claude Code, so a Codex-only workflow starts fresh. And your own free plan is only as good as the AI accounts you already pay for.
Free versus paid is simple. Everything that runs on your computer is free: the app, voice typing, the phone remote on your Wi-Fi, and agents on your own accounts. Paid plans cover what runs on our servers, which is our AI and the built-in remote for when you are away from home. You can skip that by pointing your own Cloudflare Tunnel or Tailscale at the app instead.
Build it yourself
You need a Mac and a current Node LTS release. Clone github.com/royherma/mightymouse, run npm ci, then npm run dev. The README lists the production build commands. A copy you build yourself is not signed by Apple, so macOS asks you to confirm the first launch. The signed apps update themselves.
Same idea for talking to your computer: see the open source Wispr Flow alternative.
Run your agents on your own computer and answer them from your phone.
macOS, Apple Silicon and Intel. Free, and the code is public.
Common questions
Is there an open source alternative to Conductor?
Yes. MightyMouse and T3 Code are both open source under the MIT license. MightyMouse is Mac only and adds phone answers and your live screen. T3 Code also runs on Windows and Linux.
Is there a Conductor alternative for Linux?
MightyMouse is Mac only, so it will not help on Linux. T3 Code is open source and runs on Linux, and plain Claude Code in a terminal works anywhere.
Is there a Conductor alternative for Claude Code?
Yes. MightyMouse runs Claude Code, each agent on its own branch, with a changed-files view, a pull request button and your phone for answers. It uses your own Claude plan.
Is Conductor shutting down?
Conductor is joining Meta. Per its announcement, downloads and signups stopped on 4 November, Conductor Cloud shuts down on 20 November, and the Mac app gets fixes until early 2027.
Can I keep my Conductor workspaces and chats?
Yes. Your repos are normal git folders. MightyMouse lists your Conductor workspaces under From Conductor, and Continue here starts a Claude Code session with the end of the old chat. Move Cloud workspaces to your computer first.
Is MightyMouse really free?
Everything that runs on your computer is free, including the app and agents on your own Claude, Codex, Cursor or OpenCode account. Paid plans cover our AI and the built-in remote for use away from home.
Want to see it run? MightyMouse runs your coding agents side by side on your own computer and lets you answer them from your phone, free, with the code public.