# OpenSearch vs unleash

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

| | OpenSearch | unleash |
|---|---|---|
| Score | 76/100 ✓ | 75/100 |
| Rank in category | #7 of 41 in Search Engines | #1 of 8 in Feature Flags |
| GitHub stars | 13 925 ✓ | 13 912 |
| Stars, last 30 days | +150 ✓ | +86 |
| Stable releases, 12 months | 11 | 15 ✓ |
| Latest release | 2.19.7 · 17 Oct 2026 | v8.3.0 · 27 Oct 2026 ✓ |
| Setup | Moderate | Easy ✓ |
| Official Docker image | Yes | Yes |
| License | Apache-2.0 | AGPL-3.0 |
| Main language | Java | Typescript |

## Which one should you pick?

OpenSearch scores 76/100 against 75/100 for unleash, so it is the safer default.

unleash ships more often: 15 stable releases in the past year, against 11 for OpenSearch.

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

## Details

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

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