# OpenSearch vs Understudy

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

| | OpenSearch | Understudy |
|---|---|---|
| Score | 76/100 ✓ | 48/100 |
| Rank in category | #7 of 41 in Search Engines | #110 of 209 in AI Agents |
| GitHub stars | 13 930 ✓ | 465 |
| Stars, last 30 days | +155 ✓ | +0 |
| Stable releases, 12 months | 11 ✓ | 0 |
| Latest release | 2.19.7 · 17 Oct 2026 | — |
| Setup | Moderate ✓ | Moderate |
| Official Docker image | Yes ✓ | No |
| License | Apache-2.0 | MIT |
| Main language | Java | Typescript |

## Which one should you pick?

OpenSearch scores 76/100 against 48/100 for Understudy, so it is the safer default.

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

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)
- [Understudy](https://selfhost.directory/project/understudy) (markdown: https://selfhost.directory/project/understudy.md)

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