pgvector

github.com · Vector Databases

Open source

#9 in Vector Databases

Postgres extension for vector similarity search, letting you keep embeddings next to relational data.

#postgres#extension#hnsw#sql

pgvector is one of 11 vector database tools on Drydock. See all vector database tools or how we check facts.

// guides

Guides that cover pgvector

Best Open Source Vector Database in 2026
The best open source vector database for agents and RAG in 2026: Qdrant, Milvus, pgvector, Chroma, LanceDB and Weaviate compared by license, setup and scale.
What Is Weaviate? Features, Pricing and Use Cases
Weaviate is an open source vector database in Go with hybrid search and a built in MCP server. How it works, a tested agent memory example and cloud pricing.
How to Build a RAG Pipeline with LangGraph
How to build a RAG pipeline with LangGraph: index your docs, wire retrieve and generate nodes, add a grading loop with a retry cap, then turn it into an agent.
AI Agent Memory: Mem0 vs Letta vs Zep (2026)
AI agent memory explained: how Mem0, Letta and Zep store and recall long term context, how they differ from LangGraph's built in memory, and which to choose.

// related