Happy Coder
Coding Agent Orchestration · Free + paid
Mobile and web client for Claude Code and Codex with realtime voice
At a glance
- Made by
- Happy Engineering
- Korean
- None (English and a few others only)
- Available on
- Mac, Windows, iOS, Android, Web, CLI
- Open source
- MIT
- GitHub
- 24,133 stars · MIT
What is Happy Coder?
Happy is an open-source harness that directs Claude, Codex, and Grok from one app, and you log in with a subscription you already pay for. It runs on your own hardware, and you can continue the same session in an end-to-end encrypted mobile app. You can run a team server so multiple people can share the same projects and sessions. The original Happy CLI (Happy Coder) remains in maintenance mode, and new features go into the desktop app.
- Models from multiple providers in one app, with delegation to sub-agents
- Reuse your existing Claude, Codex, and Grok subscriptions
- End-to-end encrypted mobile app
- Multiplayer collaboration through a team server
- Start with happy claude / happy codex in the terminal and resume on your phone
- Voice coding and push notifications
Who uses Happy Coder and for what
- Kick off coding tasks from your phone while away from home, then come back and review the PR
- Assign the frontend and backend to separate Claude Code instances and work in parallel
Pricing
What you get for free — Yes (free open source, no usage fee or subscription for the core app)
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying. · Official pricing page
AI tools similar to Happy Coder (alternatives)
Happy Coder vs. alternatives at a glance
| AI | Pricing | Combos on the map | Connected tools | Free | Cheapest monthly | Korean |
|---|---|---|---|---|---|---|
| Happy Coder | Free + paid | 0 | 5 | Yes | — | No |
| 1code | Free + paid | 0 | 18 | — | — | No |
| ai-maestro | Free + paid | 0 | 18 | Yes | — | No |
| aizen | Free + paid | 0 | 18 | Yes | $5.99/mo | No |
| automaker | Free + paid | 0 | 18 | Yes | — | No |
4 of these 5 tools have a free plan. Cheapest paid plan: aizen ($5.99/mo).
Combo and connection counts are based on the relationships recorded on AI Galaxy Map (2026-10-26); they are not a quality ranking.
Happy Coder on AI Galaxy Map
- One of 40 AI tools in the Coding Agent Orchestration field.
- Connected to 5 other tools — #16 in its field.
Frequently asked questions
Can I use Happy Coder for free?
Yes (free open source, no usage fee or subscription for the core app). Prices can change, so check the official site before paying.
What AI can I use instead of Happy Coder?
Tools that do the same job, such as 1code, ai-maestro, aizen, automaker, are connected to it on the map.
Can I use Happy Coder in Korean?
None (English and a few others only)
Sources (official pages)
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying.