Best Open-source Vector Databases tools

Weaviate

Scalable vector database for semantic search and AI applications

LanceDB

Multimodal AI lakehouse with fast, scalable vector search

Chroma

Embedding database for building LLM apps with memory

Qdrant

Fast, scalable vector search engine for AI-driven applications

pgvector

Vector similarity search integrated directly into PostgreSQL

Faiss

High-performance library for similarity search on dense vectors

Milvus

High-performance vector database built for AI at scale

RAFT

Reusable CUDA-accelerated primitives for high-performance GPU ML

Vespa

Real-time AI-powered search and recommendation at any scale

Infinity

AI-native database delivering millisecond hybrid search for LLM applications

DingoDB

Distributed multi-modal vector database with MySQL compatibility

Annoy

Fast, memory-efficient approximate nearest-neighbor search with shared on-disk indexes

VectorDB

Pythonic vector database with CRUD, sharding, and replication