# OpenSearch vs Rocket.Chat

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

| | OpenSearch | Rocket.Chat |
|---|---|---|
| Score | 76/100 | 82/100 ✓ |
| Rank in category | #7 of 41 in Search Engines | #1 of 13 in Instant Messaging |
| GitHub stars | 13 923 | 46 348 ✓ |
| Stars, last 30 days | +158 | +187 ✓ |
| Stable releases, 12 months | 11 | 36 ✓ |
| Latest release | 2.19.7 · 17 Oct 2026 ✓ | 8.5.4 · 16 Oct 2026 |
| Setup | Moderate ✓ | Moderate |
| Official Docker image | Yes | Yes |
| License | Apache-2.0 | Other |
| Main language | Java | Typescript |

## Which one should you pick?

Rocket.Chat scores 82/100 against 76/100 for OpenSearch, so it is the safer default.

Rocket.Chat ships more often: 36 stable releases in the past year, against 11 for OpenSearch.

## Details

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

## Related comparisons

- [Discourse vs Rocket.Chat](https://selfhost.directory/compare/discourse-vs-rocketchat)
- [Rocket.Chat vs Zulip](https://selfhost.directory/compare/rocketchat-vs-zulip)

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