Open-source vector database designed for high performance similarity search and AI/ML workloads.
Lightweight vector database with HNSW indexing for fast ANN search.
Open-source free, cloud pricing available.
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ClickHouse
ClickHouse is a columnar OLAP database with vector indexes (ANN via AMM, brute-force), supporting SQL queries over vectors + structured data at petabyte scale. Excels in aggregations with vectors. For analytics workloads with embeddings; faster ingestion than Postgres pgvector for big data.
ArcadeDB
Open-source multi-model database with native vector embedding support alongside graph, document, and more.
Cottontail DB
Cottontail DB is a column store aimed at multimedia retrieval, allowing classical boolean as well as vector-space retrieval (nearest neighbour search) using a unified data and query model.
Endee
High-performance vector database designed to handle up to 1B vectors on a single node with optimized indexing and execution. Also available as a managed cloud service.
Infinity
High-performance vector database with SQL support.
jvector
High-performance vector search engine for Java applications.
