# Vector Databases: the tools companies use

227 companies on usedby use at least one of the 7 tools in this category with a public customer. Qdrant and Weaviate lead together, with 60 companies each. Counts are of companies on usedby, not of the whole market. Latest check 2026-10-08: 221 of 236 public lines checked.

> Databases for semantic search and AI memory

Family: [Engineering & Data](https://www.usedby.ai/tools/category/engineering-data.md)

## Ranking

Public customers count every public line, job-post signals included; ties share a rank.

| Rank | Tool | Public customers | Confirmed | Observed | Signals |
|---|---|---|---|---|---|
| 1 | [Qdrant](https://www.usedby.ai/tools/qdrant.md) | 60 | 12 | 48 | 0 |
| 1 | [Weaviate](https://www.usedby.ai/tools/weaviate.md) | 60 | 17 | 42 | 1 |
| 3 | [Pinecone](https://www.usedby.ai/tools/pinecone.md) | 57 | 27 | 29 | 1 |
| 4 | [Zilliz](https://www.usedby.ai/tools/zilliz.md) | 19 | 12 | 7 | 0 |
| 5 | [LanceDB](https://www.usedby.ai/tools/lancedb.md) | 16 | 11 | 5 | 0 |
| 6 | [Vespa](https://www.usedby.ai/tools/vespa.md) | 14 | 12 | 2 | 0 |
| 7 | [Chroma](https://www.usedby.ai/tools/chroma.md) | 10 | 3 | 7 | 0 |

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Source: https://www.usedby.ai/tools/category/vector-databases · How we check: https://www.usedby.ai/methodology