OpenSearchvsZero
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| OpenSearch | Zero | |
|---|---|---|
| Score | 76/100 | 56/100 |
| Rank in category | #7 of 41 in Search Engines | #22 of 120 in AI Assistant |
| GitHub stars | 13 925 | 1 768 |
| Stars, last 30 days | +150 | +0 |
| Stable releases, 12 months | 11 | 10 |
| Latest release | 2.19.7 · 17 Oct 2026 | v0.11.0 · 16 Oct 2026 |
| Setup | Moderate | Moderate |
| Official Docker image | Yes | No |
| License | Apache-2.0 | MIT |
| Main language | Java | Go |
Which one should you pick?
OpenSearch scores 76/100 against 56/100 for Zero, so it is the safer default.
OpenSearch ships more often: 11 stable releases in the past year, against 10 for Zero.
OpenSearch is growing faster right now (+150 stars in 30 days).
OpenSearch details →Zero details →
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