Directory · Vector DB
Milvus
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
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
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
Pinecone
Vector DB · Pinecone · United States
Managed vector database. Serverless tier, sub-100ms queries at scale.
Best for
Production RAG with no ops budget
Pros
- Fully managed
- Strong serverless tier
- Battle-tested at scale
Cons
- Closed source
- Vendor lock-in
- Less control than self-hosted
Alternatives