The Stack · Vector databases

pgvector

Vector similarity search inside Postgres — keep embeddings next to your relational data.

★ 22k on GitHub·C·data updated 2026-07-06

GitHub stars★ 22k

LanguageC

CategoryVector databases

Repositorypgvector/pgvector

What pgvector is for

RAG on existing Postgres
no new infra
transactional + vector

View on GitHub →

Alternatives to pgvector

Qdrant

Vector databases · Rust

High-performance vector search engine with rich filtering, written in Rust for production-scale retrieval.

Chroma

Vector databases · Rust

Open-source embedding database designed for simplicity — the default vector store for many RAG prototypes.

Compare pgvector vs Qdrant → · All pgvector alternatives →

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