head to head · open source
Prefect vs astron-agent
Prefect has 23,882 GitHub stars, 2,527 forks, 858 open issues and last shipped today. astron-agent has 9,017 stars, 887 forks, 46 open issues and last shipped 10 days ago. Prefect leads on adoption by 165% (23,882 vs 9,017 stars). Prefect is written in Python under Apache-2.0; astron-agent is written in Java under Apache-2.0. Prefect has attracted 11% as many forks as stars, astron-agent 10%. Prefect 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
| Prefect | astron-agent | |
|---|---|---|
| GitHub stars | ★ 24K | ★ 9.0K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | Java |
| Last push | 2026-09-20 | 2026-09-10 |
| Forks | ⑂ 2.5K | ⑂ 887 |
| 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 astron-agent if
- You want the astron-agent feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and astron-agent 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 astron-agent
Astron Agent is an enterprise grade, commercial friendly agentic workflow platform for building next generation SuperAgents, aimed at organizations that need to orchestrate AI workflows, models, tools, and RPA automation in production rather than in a demo.
read the full astron-agent overview →
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Frequently asked questions
Is Prefect or astron-agent more popular?
Prefect has 23,882 GitHub stars and astron-agent has 9,017. Prefect has the larger community by that measure.
Are Prefect and astron-agent free?
Both are open source. Prefect is licensed under Apache-2.0 and astron-agent under Apache-2.0. Neither carries a licence fee.
What is the difference between Prefect and astron-agent?
Prefect is written in Python and astron-agent in Java. 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 astron-agent?
Choose Prefect if you want the larger community (23,882 stars) or its Apache-2.0 licence terms. Choose astron-agent if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.