# Mainsail vs prom-alertmanager

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

| | Mainsail | prom-alertmanager |
|---|---|---|
| Score | 65/100 | 73/100 ✓ |
| Rank in category | #3 of 22 in 3D Printing | #14 of 104 in Monitoring & observability |
| GitHub stars | 2 236 | 8 676 ✓ |
| Stars, last 30 days | +20 | +49 ✓ |
| Stable releases, 12 months | 8 | 11 ✓ |
| Latest release | v2.19.0 · 27 Aug 2026 | v0.34.1 · 17 Sept 2026 ✓ |
| Setup | Moderate | Moderate ✓ |
| Official Docker image | Yes | Yes |
| License | GPL-3.0 | Apache-2.0 |
| Main language | Vue | Go |

## Which one should you pick?

prom-alertmanager scores 73/100 against 65/100 for Mainsail, so it is the safer default.

prom-alertmanager ships more often: 11 stable releases in the past year, against 8 for Mainsail.

prom-alertmanager is growing faster right now (+49 stars in 30 days).

## Details

- [Mainsail](https://selfhost.directory/project/mainsail) (markdown: https://selfhost.directory/project/mainsail.md)
- [prom-alertmanager](https://selfhost.directory/project/prom-alertmanager) (markdown: https://selfhost.directory/project/prom-alertmanager.md)

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Source: https://selfhost.directory/compare/mainsail-vs-prom-alertmanager