OSEMvsprometheus
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| OSEM | prometheus | |
|---|---|---|
| Score | 47/100 | 90/100 |
| Rank in category | #8 of 11 in Event Management | #1 of 104 in Monitoring & observability |
| GitHub stars | 929 | 66 850 |
| Stars, last 30 days | +0 | +638 |
| Stable releases, 12 months | 0 | 16 |
| Latest release | — | v3.15.1 · 21 Oct 2026 |
| Setup | Advanced | Moderate |
| Official Docker image | No | Yes |
| License | MIT | Apache-2.0 |
| Main language | Ruby | Go |
Which one should you pick?
prometheus scores 90/100 against 47/100 for OSEM, so it is the safer default.
prometheus ships more often: 16 stable releases in the past year, against 0 for OSEM.
If you want the quickest setup, prometheus is easier to run; OSEM needs more configuration.
prometheus is growing faster right now (+638 stars in 30 days).
OSEM details →prometheus details →