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.
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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.
Epsilla
Open-source vector database designed for high performance similarity search and AI/ML workloads.
Infinity
High-performance vector database with SQL support.
Meilisearch
Open-source search engine with support for vector and hybrid search for fast semantic retrieval.
NucliaDB
NucliaDB is a versatile vector database designed for data scientists and machine learning experts working with HuggingFace and other data pipeline platforms. Built on Tantivy in Rust and Python, it efficiently indexes large datasets with multi-tenant support.
