Directory · Vector DB
Weaviate
Open-source vector database with hybrid search, modular model integrations, and a managed cloud offering.
Best for
Hybrid keyword-plus-vector search with flexible model plugins
More vector db tools
Chroma
Vector DB · Chroma · United States
Open-source embedding database for LLM apps with a simple Python and JavaScript API plus managed Chroma Cloud.
Best for
Getting a vector store running in minutes for prototypes and small apps
Milvus
Vector DB · Zilliz · United States
Open-source vector database built for billion-scale similarity search, maintained by Zilliz with a managed cloud option.
Best for
Very large-scale vector search deployments
pgvector
Vector DB · Andrew Kane (open source) · United States
Open-source Postgres extension adding vector types and similarity search, enabling embeddings in an existing database.
Best for
Teams that want vector search inside the Postgres they already run