head to head · open source
agent-orchestrator vs harmonist
agent-orchestrator has 14,059 GitHub stars, 1,912 forks, 711 open issues and last shipped yesterday. harmonist has 2,244 stars, 209 forks, 1 open issues and last shipped 5 months ago. agent-orchestrator leads on adoption by 527% (14,059 vs 2,244 stars). agent-orchestrator is written in Go under Apache-2.0; harmonist is written in Python under MIT. agent-orchestrator has attracted 14% as many forks as stars, harmonist 9%. agent-orchestrator was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (ai-agents, claude-code), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| agent-orchestrator | harmonist | |
|---|---|---|
| GitHub stars | ★ 14K | ★ 2.2K |
| License | Apache-2.0 | MIT |
| Written in | Go | Python |
| Last push | 2026-11-04 | 2026-06-09 |
| Forks | ⑂ 1.9K | ⑂ 209 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick agent-orchestrator if
- You weight community size — 14K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick harmonist if
- You want the harmonist feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and harmonist fits your workflow better
About agent-orchestrator
Agent Orchestrator Plan, run, and supervise coding agents from one place. Give every coding task its own agent, workspace, and feedback loop. Plan and delegate larger outcomes with a project aware orchestrator. Follow every worker, pull request, CI run, and review in a live Kanban. Download AO • Documentation • Releases • Contributing • Discord English · 简体中文 · 日本語 · 한국어 · Español · Français · Deutsch · Português (Brasil) A workspace for agent driven development One coding agent can handle a task. Running several across a project creates a different job: deciding what matters, splitting work…
read the full agent-orchestrator overview →
About harmonist
If you are an AI agent asked to install or integrate this pack: read integration prompt.md and execute its steps. Do not apply AGENTS.template.md as a live rule inside the pack folder — it is the template that becomes the user project's AGENTS.md during integration. Harmonist Portable AI agent orchestration with mechanical protocol enforcement A drop in multi agent framework for Cursor, Claude Code, Copilot, Windsurf, Aider, and other AI coding assistants. Built and maintained by GammaLab · @GammaLabTechnologies Most AI coding frameworks trust the language model to follow the rules. Harmonist refuses to let it…
read the full harmonist overview →
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Frequently asked questions
Is agent-orchestrator or harmonist more popular?
agent-orchestrator has 14,059 GitHub stars and harmonist has 2,244. agent-orchestrator has the larger community by that measure.
Are agent-orchestrator and harmonist free?
Both are open source. agent-orchestrator is licensed under Apache-2.0 and harmonist under MIT. Neither carries a licence fee.
What is the difference between agent-orchestrator and harmonist?
agent-orchestrator is written in Go and harmonist in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, agent-orchestrator or harmonist?
Choose agent-orchestrator if you want the larger community (14,059 stars) or its Apache-2.0 licence terms. Choose harmonist if its feature set, stack or MIT licence fits better. Both are self-hostable.