prefectvsSemaphore UI
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| prefect | Semaphore UI | |
|---|---|---|
| Score | 80/100 | 73/100 |
| Rank in category | #5 of 32 in Workflow Automation | #12 of 166 in Developer Tools |
| GitHub stars | 24 095 | 14 336 |
| Stars, last 30 days | +183 | +153 |
| Stable releases, 12 months | 17 | 20 |
| Latest release | 2.20.27 · 23 Oct 2026 | v2.18.31 · 7 Oct 2026 |
| Setup | Moderate | Easy |
| Official Docker image | Yes | Yes |
| License | Apache-2.0 | MIT |
| Main language | Python | Go |
Which one should you pick?
prefect scores 80/100 against 73/100 for Semaphore UI, so it is the safer default.
Semaphore UI ships more often: 20 stable releases in the past year, against 17 for prefect.
If you want the quickest setup, Semaphore UI is easier to run; prefect needs more configuration.
prefect details →Semaphore UI details →
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