# OpenSearch vs OSEM

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

| | OpenSearch | OSEM |
|---|---|---|
| Score | 76/100 ✓ | 47/100 |
| Rank in category | #7 of 41 in Search Engines | #8 of 11 in Event Management |
| GitHub stars | 13 930 ✓ | 929 |
| Stars, last 30 days | +155 ✓ | +0 |
| Stable releases, 12 months | 11 ✓ | 0 |
| Latest release | 2.19.7 · 17 Oct 2026 | — |
| Setup | Moderate ✓ | Advanced |
| Official Docker image | Yes ✓ | No |
| License | Apache-2.0 | MIT |
| Main language | Java | Ruby |

## Which one should you pick?

OpenSearch scores 76/100 against 47/100 for OSEM, so it is the safer default.

OpenSearch ships more often: 11 stable releases in the past year, against 0 for OSEM.

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

OpenSearch is growing faster right now (+155 stars in 30 days).

## Details

- [OpenSearch](https://selfhost.directory/project/opensearch) (markdown: https://selfhost.directory/project/opensearch.md)
- [OSEM](https://selfhost.directory/project/osem) (markdown: https://selfhost.directory/project/osem.md)

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Source: https://selfhost.directory/compare/opensearch-vs-osem