head to head · open source
Prefect vs agent-orchestrator
Prefect has 23,882 GitHub stars, 2,527 forks, 858 open issues and last shipped today. agent-orchestrator has 12,195 stars, 1,685 forks, 711 open issues and last shipped today. Prefect leads on adoption by 96% (23,882 vs 12,195 stars). Prefect is written in Python under Apache-2.0; agent-orchestrator is written in Go under Apache-2.0. Prefect has attracted 11% as many forks as stars, agent-orchestrator 14%. agent-orchestrator was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (orchestration), 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
| Prefect | agent-orchestrator | |
|---|---|---|
| GitHub stars | ★ 24K | ★ 12K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | Go |
| Last push | 2026-09-20 | 2026-09-20 |
| Forks | ⑂ 2.5K | ⑂ 1.7K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Prefect if
- You weight community size — 24K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick agent-orchestrator if
- You want the agent-orchestrator feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and agent-orchestrator fits your workflow better
About Prefect
Prefect is an open source, Python native workflow orchestration framework that lets data and machine learning teams turn ordinary Python scripts into scheduled, resilient, observable production pipelines.
read the full Prefect overview →
About agent-orchestrator
Agent Orchestrator is an open source desktop workspace for running and supervising teams of coding agents, written in Go and released under the Apache 2.0 license. It lives in the agent orchestration ecosystem, alongside the coding harnesses it drives, and it is distributed as a local application rather than as a hosted service. The project describes itself as a place to plan, run, and supervise coding agents from one place, giving every coding task its own agent, workspace, and feedback loop.
read the full agent-orchestrator overview →
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Frequently asked questions
Is Prefect or agent-orchestrator more popular?
Prefect has 23,882 GitHub stars and agent-orchestrator has 12,195. Prefect has the larger community by that measure.
Are Prefect and agent-orchestrator free?
Both are open source. Prefect is licensed under Apache-2.0 and agent-orchestrator under Apache-2.0. Neither carries a licence fee.
What is the difference between Prefect and agent-orchestrator?
Prefect is written in Python and agent-orchestrator in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Prefect or agent-orchestrator?
Choose Prefect if you want the larger community (23,882 stars) or its Apache-2.0 licence terms. Choose agent-orchestrator if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.