pgvector
Open-source PostgreSQL extension for vector similarity search alongside relational data
pgvector is a PostgreSQL extension that adds vector similarity search directly within Postgres. Store, index, and query high-dimensional embeddings alongside your relational data with full ACID compliance. Supports L2, cosine, inner product, L1, Hamming, and Jaccard distances with IVFFlat and HNSW indexing. Handles single-precision, half-precision, binary, and sparse vectors. Works with standard Postgres features like JOINs. Available via Docker, Homebrew, PGXN, and preinstalled on Supabase, Neon, and other hosted providers.
Pricing: Free
pgvector Alternatives
Explore 19 products in the Vector databases category. View all pgvector alternatives.
TopK
AI-native search engine combining vector, keyword, and faceted search
Redis
In-memory vector database for low-latency similarity search across AI applications
Supabase Vector
Open-source Postgres vector database and AI toolkit built on pgvector
Zilliz
A Widely-Adopted Vector Database.
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