Happy Coder
Mobile and desktop app to run and control Claude Code, Codex and other agents using your own subscriptions.
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Use cases
About Happy Coder
Happy Coder is listed in our coding category and is aimed at people who want a ready-to-use product. Mobile and desktop app to run and control Claude Code, Codex and other agents using your own subscriptions. Pricing, as the maker states it: Open source. Maturity: Mature. We last checked the official link on 2026-10-16.
What is Happy Coder?
Happy Coder is an open-source (MIT) mobile and desktop app for running and controlling coding agents such as Claude Code and Codex with the subscriptions you already pay for. It adds a harness, not another bill.
It runs on your own hardware and your projects stay ordinary folders. Sessions are available on your phone with end-to-end encryption between devices, and it is multiplayer: you can invite someone into a session so you both watch and steer the same agent.
Sources: the official README and our directory listing, checked 2026-10-18. Official site: happy.engineering.
Who is Happy Coder for?
People who use Claude Code, Codex or similar agents and want to monitor and steer them from their phone or share sessions with a colleague.
Happy Coder at a glance
- Open source: Yes (MIT License)
- GitHub: slopus/happy · 24,244 stars (as of Oct 21, 2026)
Key features
- Uses your existing Claude, Codex and other subscriptions
- End-to-end encrypted mobile app
- Multiplayer sessions
- Runs on your own hardware; MIT license
Happy Coder FAQ
What is Happy Coder?
Happy Coder is an open-source (MIT) mobile and desktop app for running and controlling coding agents such as Claude Code and Codex with the subscriptions you already pay for. It adds a harness, not another bill.
Who is Happy Coder for?
People who use Claude Code, Codex or similar agents and want to monitor and steer them from their phone or share sessions with a colleague.
Is Happy Coder free?
Happy Coder's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Is Happy Coder open source?
Yes. Happy Coder is released under the MIT License, according to its GitHub repository.
What are alternatives to Happy Coder?
Similar tools include Vibe Kanban, OpenRig, abtop, luvus, Muxin and Agor.
Happy Coder ratings and reviews
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Happy Coder alternatives
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abtop
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luvus
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Muxin
Muxin is a free, open-source desktop app that puts all your Macs, Linux, Windows and cloud machines in one window, so you can run Claude Code, Codex and other agent CLIs on any of them, see their screens and logs, and take changes to a pull request.
Agor
Multiplayer workspace where teams run and watch coding agents such as Claude Code and Codex together on shared boards.
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