Best Open-Source Vector Databases | open-source.storeAll categoriesVector Databases
High-performance vector databases optimized for embedding searches, recommender systems, and RAG.
7 tools found 
Milvus
Milvus is an open-source distributed vector database replacing Pinecone with GPU-accelerated indexing, hybrid search, and decoupled cloud-native scaling.
Apache-2.0Vector Databases

Qdrant
Qdrant is an open-source Rust vector database replacing Pinecone with self-hosted high-throughput retrieval, on-disk quantization, and payload filtering.
Apache-2.0Vector Databases

Chroma
Chroma is a self-hosted vector database replacing cloud services like Weaviate Cloud with in-process, sub-10ms search on local HNSW indexes.
Apache-2.0Vector Databases

Pgvector
Pgvector brings vector similarity search and HNSW indexing to PostgreSQL, letting developers query embeddings directly alongside relational data.
MITVector Databases

Weaviate
Weaviate is an open-source Go vector database replacing Pinecone with self-hosted hybrid search, in-VPC data privacy, and unified document storage.
BSD-3-ClauseVector Databases

Orama
Open-source in-memory search engine and vector database for JavaScript and TypeScript. Fast full-text, vector, and hybrid search in browser and edge.
Vector Databases
Go & gRPC engineer · founder of EasyP
PromotedGo, gRPC and Protobuf done right, LLM agents in production, and the hard parts of shipping a first product.
GogRPCProtobufLLM agents

HelixDB
HelixDB is an open-source graph-vector database in Rust that unifies vector search and graph traversals to replace fragmented multi-database AI stacks.
Apache-2.0Vector Databases
3d ago
1d ago
Apache-2.0Vector Databases
4d ago
Apache-2.0Vector Databases