head to head · open source
Prefect vs donutbrowser
Prefect has 23,882 GitHub stars, 2,527 forks, 858 open issues and last shipped today. donutbrowser has 3,861 stars, 410 forks, 28 open issues and last shipped yesterday. Prefect leads on adoption by 519% (23,882 vs 3,861 stars). Prefect is written in Python under Apache-2.0; donutbrowser is written in Rust under AGPL-3.0. Prefect has attracted 11% as many forks as stars, donutbrowser 11%. Prefect 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 | donutbrowser | |
|---|---|---|
| GitHub stars | ★ 24K | ★ 3.9K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Python | Rust |
| Last push | 2026-09-20 | 2026-09-19 |
| Forks | ⑂ 2.5K | ⑂ 410 |
| 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 donutbrowser if
- You want the donutbrowser feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Rust
- You evaluated both and donutbrowser 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 donutbrowser
Donut Browser is a free, open source anti detect browser written in Rust for anyone who needs many fully isolated browser identities — each with its own fingerprint, cookies, extensions, proxy, and VPN — running from one desktop install, and for the automation engineers and teams who script or sync those profiles.
read the full donutbrowser overview →
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Frequently asked questions
Is Prefect or donutbrowser more popular?
Prefect has 23,882 GitHub stars and donutbrowser has 3,861. Prefect has the larger community by that measure.
Are Prefect and donutbrowser free?
Both are open source. Prefect is licensed under Apache-2.0 and donutbrowser under AGPL-3.0. Neither carries a licence fee.
What is the difference between Prefect and donutbrowser?
Prefect is written in Python and donutbrowser in Rust. 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 donutbrowser?
Choose Prefect if you want the larger community (23,882 stars) or its Apache-2.0 licence terms. Choose donutbrowser if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.