# prometheus vs simon

> Two self-hosted [Monitoring & observability projects](https://selfhost.directory/monitoring-observability), compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.

| | prometheus | simon |
|---|---|---|
| Score | 90/100 ✓ | 46/100 |
| Rank in category | #1 of 104 in Monitoring & observability | #73 of 104 in Monitoring & observability |
| GitHub stars | 66 845 ✓ | 161 |
| Stars, last 30 days | +649 | — |
| Stable releases, 12 months | 16 ✓ | 9 |
| Latest release | v3.15.1 · 21 Oct 2026 ✓ | 0.3.7 · 18 Oct 2026 |
| Setup | Moderate | Easy ✓ |
| Official Docker image | Yes | Yes |
| License | Apache-2.0 | MIT |
| Main language | Go | Rust |

## Which one should you pick?

prometheus scores 90/100 against 46/100 for simon, so it is the safer default.

prometheus ships more often: 16 stable releases in the past year, against 9 for simon.

If you want the quickest setup, simon is easier to run; prometheus needs more configuration.

prometheus is growing faster right now (+649 stars in 30 days).

## Details

- [prometheus](https://selfhost.directory/project/prometheus) (markdown: https://selfhost.directory/project/prometheus.md)
- [simon](https://selfhost.directory/project/simon) (markdown: https://selfhost.directory/project/simon.md)

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Source: https://selfhost.directory/compare/prometheus-vs-simon