Best Open-source Vector Databases tools

Chroma

Embedding database for building LLM apps with memory

Qdrant

Fast, scalable vector search engine for AI-driven applications

Vespa

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

Weaviate

Scalable vector database for semantic search and AI applications

LanceDB

Multimodal AI lakehouse with fast, scalable vector search

Faiss

High-performance library for similarity search on dense vectors

Milvus

High-performance vector database built for AI at scale

pgvector

Vector similarity search integrated directly into PostgreSQL

RAFT

Reusable CUDA-accelerated primitives for high-performance GPU ML

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