head to head · open source
rowboat vs harmonist
rowboat has 17,914 GitHub stars, 1,784 forks, 167 open issues and last shipped 2 days ago. harmonist has 2,257 stars, 206 forks, 1 open issues and last shipped 3 months ago. rowboat leads on adoption by 694% (17,914 vs 2,257 stars). rowboat is written in TypeScript under Apache-2.0; harmonist is written in Python under MIT. rowboat has attracted 10% as many forks as stars, harmonist 9%. rowboat was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (ai-agents, claude-code, llm), 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
| rowboat | harmonist | |
|---|---|---|
| GitHub stars | ★ 18K | ★ 2.3K |
| License | Apache-2.0 | MIT |
| Written in | TypeScript | Python |
| Last push | 2026-09-18 | 2026-06-09 |
| Forks | ⑂ 1.8K | ⑂ 206 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick rowboat if
- You weight community size — 18K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches TypeScript
- 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 rowboat
Rowboat is an open source desktop AI coworker, licensed Apache 2.0 and written in TypeScript, that maintains a memory of your work as a local Markdown knowledge graph and provides built in surfaces — email, notes, browser, code mode, meeting notes — for acting on that memory.
read the full rowboat overview →
About harmonist
harmonist is an MIT licensed, dependency free Python framework that adds multi agent orchestration and mechanically enforced protocol to AI coding assistants such as Cursor, Claude Code, Copilot, Windsurf, and Aider, and it serves individual developers and teams who need agent workflows to obey engineering rules rather than merely be asked to follow them.
read the full harmonist overview →
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Frequently asked questions
Is rowboat or harmonist more popular?
rowboat has 17,914 GitHub stars and harmonist has 2,257. rowboat has the larger community by that measure.
Are rowboat and harmonist free?
Both are open source. rowboat is licensed under Apache-2.0 and harmonist under MIT. Neither carries a licence fee.
What is the difference between rowboat and harmonist?
rowboat is written in TypeScript 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, rowboat or harmonist?
Choose rowboat if you want the larger community (17,914 stars) or its Apache-2.0 licence terms. Choose harmonist if its feature set, stack or MIT licence fits better. Both are self-hostable.