# prometheus vs Ultimate Certificate Manager

> Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.

| | prometheus | Ultimate Certificate Manager |
|---|---|---|
| Score | 90/100 ✓ | 50/100 |
| Rank in category | #1 of 104 in Monitoring & observability | #4 of 8 in Certificate Management |
| GitHub stars | 66 850 ✓ | 170 |
| Stars, last 30 days | +638 ✓ | +0 |
| Stable releases, 12 months | 16 ✓ | 4 |
| Latest release | v3.15.1 · 21 Oct 2026 | v2.246 · 27 Oct 2026 ✓ |
| Setup | Moderate ✓ | Moderate |
| Official Docker image | Yes | Yes |
| License | Apache-2.0 | AGPL-3.0 |
| Main language | Go | Python |

## Which one should you pick?

prometheus scores 90/100 against 50/100 for Ultimate Certificate Manager, so it is the safer default.

prometheus ships more often: 16 stable releases in the past year, against 4 for Ultimate Certificate Manager.

prometheus is growing faster right now (+638 stars in 30 days).

## Details

- [prometheus](https://selfhost.directory/project/prometheus) (markdown: https://selfhost.directory/project/prometheus.md)
- [Ultimate Certificate Manager](https://selfhost.directory/project/ultimate-ca-manager) (markdown: https://selfhost.directory/project/ultimate-ca-manager.md)

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Source: https://selfhost.directory/compare/prometheus-vs-ultimate-ca-manager