head to head · open source
Temporal vs harmonist
Temporal has 23,180 GitHub stars, 1,914 forks, 956 open issues and last shipped today. harmonist has 2,257 stars, 206 forks, 1 open issues and last shipped 3 months ago. Temporal leads on adoption by 927% (23,180 vs 2,257 stars). Temporal is written in Go under MIT; harmonist is written in Python under MIT. Temporal has attracted 8% as many forks as stars, harmonist 9%. Temporal was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| Temporal | harmonist | |
|---|---|---|
| GitHub stars | ★ 23K | ★ 2.3K |
| License | MIT | MIT |
| Written in | Go | Python |
| Last push | 2026-09-20 | 2026-06-09 |
| Forks | ⑂ 1.9K | ⑂ 206 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Temporal if
- You weight community size — 23K stars and counting
- You want the MIT 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 Temporal
Temporal is a durable execution platform for building resilient applications with workflows. It lives in the infrastructure and operations ecosystem, specifically within orchestration and scheduling. The server executes units of application logic called Workflows and automatically handles intermittent failures by retrying failed operations. Temporal originated as a fork of Uber's Cadence and is developed by Temporal Technologies, a startup formed by the creators of Cadence.
read the full Temporal 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 Temporal or harmonist more popular?
Temporal has 23,180 GitHub stars and harmonist has 2,257. Temporal has the larger community by that measure.
Are Temporal and harmonist free?
Both are open source. Temporal is licensed under MIT and harmonist under MIT. Neither carries a licence fee.
What is the difference between Temporal and harmonist?
Temporal 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, Temporal or harmonist?
Choose Temporal if you want the larger community (23,180 stars) or its MIT licence terms. Choose harmonist if its feature set, stack or MIT licence fits better. Both are self-hostable.