Prefect vs Watchtower
A side-by-side comparison of two self-hosted automation & workflows options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Prefect
Modern workflow orchestration for data and Python pipelines
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Watchtower
Automatically update running Docker containers to new images
| Feature | Prefect | Watchtower |
|---|---|---|
| Category | Automation & Workflows | Automation & Workflows |
| License | Apache-2.0 | Apache-2.0 |
| Language | Python | Go |
| Setup difficulty | Medium | Easy |
| Min. RAM | 1,024 MB | 64 MB |
| Deployment | docker, kubernetes, helm | docker |
| GitHub stars | ★ 23,573 | ★ 24,695 |
| First released | 2018 | 2017 |
| Replaces | AWS Step Functions, Azure Data Factory | Renovate |
Why pick each one
Frequently asked questions
Is Prefect or Watchtower better?
Watchtower is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Prefect if its specific feature set fits your needs better.
Are Prefect and Watchtower free and open-source?
Yes. Prefect is licensed under Apache-2.0 and Watchtower under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Prefect and Watchtower with Docker?
Prefect: yes. Watchtower: yes.