Best Chroma alternatives
5 tools developers use instead of Chroma, ranked by popularity. 5 offer a free plan and 4 are open source. Updated October 2026.
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Open-source vector database written in Rust, built for fast filtered search with hybrid dense and sparse retrieval.
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Open-source vector database with native hybrid search that fuses BM25 keyword matching and vector similarity in a single query.
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Open-source Postgres extension that adds vector similarity search directly into an existing database, letting teams skip a separate vector database entirely.
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Open-source vector database built for billion-scale similarity search, with a distributed, cloud-native architecture and a managed cloud option called Zilliz Cloud.