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Weaviate Alternatives (open-source, 2026)

Open-source alternatives to Weaviate, compared on live data.

ToolStarsPyPI/moLicenseType
Milvus 44,805 5,919,923 Apache-2.0 database
FAISS 40,308 17,779,635 MIT library
Qdrant 32,389 23,963,183 Apache-2.0 database
Chroma 28,456 13,590,061 Apache-2.0 database
pgvector 21,794 NOASSERTION extension
LanceDB 10,627 7,249,640 Apache-2.0 embedded
Vespa 6,959 8,505,418 Apache-2.0 database
Marqo 5,022 48,238 Apache-2.0 database

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