Retrieval / Vector Store
Embedding store, hybrid search, RAG infrastructure.
turbopuffer
Serverless vector + full-text search with object-storage backend.
used in
13
commercial
usage
pgvector
Postgres extension for vector similarity search.
used in
4
open source
free
Pinecone
Managed vector database; the incumbent for production RAG.
used in
1
commercial
freemium
Vespa
Search and AI serving platform combining vector, text, and structured-data retrieval with machine-learned ranking.
used in
1
hybrid
freemium
Chroma
Open-source embedding database; popular for local dev and small prod.
used in
0
open source
freemium
Elasticsearch
Distributed search engine whose dense_vector kNN and hybrid retrieval support vector and RAG workloads.
used in
0
hybrid
freemium
LanceDB
Open-source embedded multimodal vector database built on the Lance columnar format.
used in
0
hybrid
freemium
Marqo
End-to-end vector search engine that generates, stores, and retrieves embeddings for text and images through a single API.
used in
0
hybrid
freemium
Milvus
Open-source, cloud-native vector database for large-scale ANN search, with Zilliz Cloud as its managed offering.
used in
0
hybrid
freemium
Qdrant
Rust-based vector similarity search engine and database with payload filtering.
used in
0
hybrid
freemium
Weaviate
Open-source, cloud-native vector database in Go that stores both objects and vectors.
used in
0
hybrid
freemium