Vector Databases
Vector databases purpose-built for AI applications — store, index, and search high-dimensional embeddings at scale. These are the retrieval backbone of RAG pipelines, semantic search, and long-term agent memory. Available as managed cloud services or open-source self-hosted deployments.
LanceDB
by LanceDB
Stores and searches multimodal vectors in an embedded database built on the Lance columnar format, running in-process…
LightRAG
by HKU Data Science Lab
Builds a graph-based retrieval index over documents so agents can answer questions spanning many sources, served…
Typesense
by Typesense
Runs typo-tolerant search with built-in vector, hybrid, and semantic modes over a REST API, self-hosted or on Typesense…
Algolia
by Algolia
Hosted search and discovery API with typo tolerance, faceting, and vector search, callable directly for agent retrieval…
ChromaDB
by Chroma
Open-source embedding database for local and cloud AI apps. Simple API for storing, querying, and filtering embeddings.…
Codebase Memory MCP
by DeusData
Indexes repositories into a persistent tree-sitter knowledge graph of functions, classes, call chains, and HTTP routes…
Cognee
by Topoteretes
Builds queryable memory for agents by turning documents and conversations into a knowledge graph plus vector store…
Elasticsearch MCP Server
by Elastic
Official Elastic MCP server letting agents query Elasticsearch indices, run search and aggregations, and inspect…
Milvus
by Zilliz
High-performance open-source vector database with REST API, gRPC, and an official MCP server. Stores billions of…
PageIndex
by Vectify AI
Indexes long documents as a reasoning-based hierarchical tree so agents retrieve by navigating structure instead of…
Pinecone
by Pinecone
Fully managed vector database for AI applications. Store and search billions of high-dimensional embeddings with low…
Qdrant
by Qdrant
High-performance open-source vector database. Supports dense, sparse, and multi-vector search. On-premise or cloud.…
Supabase MCP
by Supabase
Official Supabase MCP server. Lets AI agents manage Postgres databases, run queries, handle migrations, store pgvector…
turbopuffer
by turbopuffer
Gives search and RAG backends a serverless vector and BM25 full-text search database built on object storage, queried…
turbovec
by Ryan Codrai
Indexes and searches embeddings with 2- to 4-bit TurboQuant compression in a Rust library with Python bindings, for…
Weaviate
by Weaviate
Stores objects and vectors together, combining semantic search with structured filtering for scalable, cloud-native AI…
Zvec
by Alibaba
Embeds an in-process vector database into applications for dense, sparse, full-text, and hybrid search with durable…