A T3 Code alternative that runs Claude Code itself
As of November 9, 2026
T3 Code calls itself an agent harness control surface: a desktop app, a web app and phone apps for the coding agents you’ve installed, open source under the MIT licence. Moontors is an agentic development environment (ADE) that runs Claude Code, Codex, Gemini CLI and Grok Build side by side, each through its own protocol, every session a live card on one board.
At a glance
Section titled “At a glance”| T3 Code | Moontors | |
|---|---|---|
| Agents | Claude Code, Codex, Cursor, Grok Build, OpenCode, Google Antigravity, Pi or Muse Code, each installed and signed in on your computer | Claude Code, Codex, Gemini CLI and Grok Build, through each one's own protocol |
| Platforms | macOS, Windows and Linux; a web app, and apps for iOS and Android, the phone a remote for your computer | macOS 13+, Windows 10+ (x64), Linux (x86-64); an app for your phone, on Google Play for Android, the iPhone app coming soon; the Windows and Linux builds aren't signed yet, and Windows asks before the first open; on Windows 11, Smart App Control, when it's on, blocks unsigned apps, Moontors among them; early preview (0.x) (Known limits) |
| Needs | An installed, signed-in agent; a T3 Connect account to reach your computer through its relay | Each agent's own sign-in; no Moontors account needed (Signing in) |
| Isolation | A new git worktree or the project’s folder, by your default | A git worktree per session, when you want one (Worktrees) |
| When the app is closed | Its server kept running in the background by t3 service install, on macOS and Linux | Sessions keep working in a background service (Sessions and the board) |
| Remote work | T3 Connect, pairing on your network or tailnet, Tailscale, and SSH | Local only |
| Licence | MIT, open source | Free, closed source |
| Price | Free | Free, with no Moontors account needed |
What each has that the other doesn’t
Section titled “What each has that the other doesn’t”T3 Code:
- open source, under the MIT licence;
- Cursor, OpenCode, Google Antigravity, Pi and Muse Code as agents;
- pull requests made, reviewed and merged in the app, on GitHub, GitLab, Bitbucket and more;
- agents on other machines, over SSH, Tailscale or T3 Connect;
- a web app beside the desktop one.
Moontors:
- Claude Code itself, the command-line agent as Anthropic ships it, where T3 Code drives Claude through Anthropic’s Agent SDK;
- every session a live card on one board, its transcript streaming as it works, in sections you make (Sessions and the board);
- a Git view with the history graph, staging by hunk, stashes, and merge conflicts resolved side by side (Git and Files);
- the agents’ own settings, MCP servers and skills listed, and switched on and off for Moontors’ sessions without editing your files (Configuration);
- sessions that keep working in a background service after you quit the app, on macOS, Windows and Linux, where T3 Code’s background server is set up on macOS and Linux.
Where T3 Code is the better fit
Section titled “Where T3 Code is the better fit”- You want an open-source app.
- You use Cursor, OpenCode, Antigravity, Pi or Muse Code as agents. Moontors will support Cursor and OpenCode, but doesn’t yet.
- You want pull requests made and reviewed in the same app.
- Your agents run on other machines, over SSH or Tailscale.
Questions
Section titled “Questions”What’s the difference between Moontors and T3 Code?
Section titled “What’s the difference between Moontors and T3 Code?”Both are free and run several coding agents at once in their own interface, each in a git worktree when you want one, with your sessions on your phone too: T3 Code through its iOS and Android apps. T3 Code lists its threads in a sidebar and runs more agents. Moontors runs Claude Code, Codex, Gemini CLI and Grok Build themselves, as their vendors ship them, with every session a live card on one board, and keeps the sessions working in a background service on macOS, Windows and Linux.
Is T3 Code free?
Section titled “Is T3 Code free?”Yes, and so is Moontors. T3 Code’s FAQ says there’s no way to pay for it: you bring your own subscriptions. Moontors needs no Moontors account either, and each agent signs in its own way (Signing in), a Claude subscription or a ChatGPT sign-in you already have included.
Is Moontors open source?
Section titled “Is Moontors open source?”No. Moontors is free, but closed source. T3 Code is open source, under the MIT licence.
Is there an app for my phone?
Section titled “Is there an app for my phone?”Yes, for both. Moontors has an app for your phone that follows and answers your computer's own sessions over a link encrypted end to end, which no Moontors server can read, on Google Play for Android, the iPhone app coming soon. T3 Code has apps for iOS and Android, a remote for your computer, reached through T3 Connect or a pairing link.
Does Moontors run Claude Code itself?
Section titled “Does Moontors run Claude Code itself?”Yes. Moontors runs Claude Code’s own command-line agent, as Anthropic ships it, on your Claude subscription, with your own settings, skills and MCP servers, and Codex, Gemini CLI and Grok Build the same way. T3 Code drives Claude through Anthropic’s Agent SDK.