Vector Databases
Databases and libraries for embeddings, similarity search and retrieval. 47 tools listed. See also the guide to the best Vector Databases tools.
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Algolia
Search and discovery API with AI-powered neural and vector search.
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Amazon S3 Vectors
Native vector storage and similarity queries in Amazon S3.
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Annoy
Open-source library from Spotify for approximate nearest neighbor search.
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Chroma
Open-source search and embeddings database for AI applications.
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Cloudflare Vectorize
Globally distributed vector database on Cloudflare.
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Contextual AI
Enterprise platform for building RAG agents over company documents.
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Couchbase
Cloud database with vector search for AI applications.
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Deep Lake
Activeloop's database for AI that stores vectors, images and other multimodal data.
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Elasticsearch
Search and analytics engine that supports vector and hybrid search.
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Epsilla
Platform for building, deploying and managing vertical AI agents for enterprises.
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FAISS
Meta's open-source library for efficient similarity search over dense vectors.
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HelixDB
Graph and vector database with agent-friendly ontology tools.
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hnswlib
Open-source header-only C++/Python library for fast approximate nearest neighbor search.
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Infinity
Open-source AI-native database from InfiniFlow for dense, sparse and full-text hybrid search.
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KDB.AI
Vector database from KX for time-series and similarity search.
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LanceDB
Open-source multimodal vector database built on the Lance format.
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Marqo
Vector search platform that handles embedding generation and retrieval.
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Meilisearch
Open-source search engine with keyword, vector and hybrid search, available self-hosted or as a managed cloud.
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Milvus
Open-source vector database built for scalable similarity search.
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Mixedbread
Search platform and embedding and reranking models for building AI search.
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MongoDB Atlas Vector Search
Vector search built into MongoDB Atlas.
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Neo4j
Graph database with vector search, used for knowledge graphs and GraphRAG.
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OpenSearch
Open-source search and analytics suite with vector search.
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Oracle AI Vector Search
Vector search built into Oracle Database.
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ParadeDB
Postgres extension and distribution for full-text search and analytics, used alongside vector search.
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pgvector
Open-source vector similarity search extension for PostgreSQL.
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Pinecone
Managed vector database for search and retrieval applications.
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Qdrant
Open-source vector database and search engine with a managed cloud.
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Ragie
Managed retrieval-augmented generation (RAG) service with connectors, indexing and retrieval APIs.
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Redis
In-memory data platform with vector search and semantic caching for AI apps.
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ScaNN
Google open-source library for efficient vector similarity search.
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SingleStore
Distributed SQL database with built-in vector search for real-time AI apps.
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Supabase
Open-source Postgres development platform with vector and AI toolkit.
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SurrealDB
Multi-model database with vector, graph and document data, positioned as memory for AI agents.
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TigerData
Postgres cloud from the creators of TimescaleDB, with pgvectorscale for vector workloads.
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turbopuffer
Serverless vector and full-text search engine built on object storage.
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Turso
SQLite-compatible database with native vector search for on-device and edge apps.
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txtai
Open-source embeddings database for semantic search and LLM workflows.
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Typesense
Open-source search engine with vector, hybrid and typo-tolerant search.
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Upstash Vector
Serverless vector database from Upstash, billed by usage.
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USearch
Open-source single-file vector search and clustering engine.
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Vald
Open-source, cloud-native distributed approximate nearest neighbor vector search engine.
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Vectara
Managed platform for retrieval-augmented generation and AI agents grounded in company data.
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VectorChord
Postgres extension for scalable vector search.
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Vespa
Open-source engine for search, recommendation and vector retrieval at scale.
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Weaviate
Open-source vector database with hybrid search and a managed cloud.
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Zilliz
Managed Milvus vector database cloud from its creators.