Open-source multi-model database with native vector embedding support alongside graph, document, and more.
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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.
ruvector-graph-transformer
Unified graph transformer with proof-gated mutation substrate for verified graph-vector operations, featuring 8 modules and 186 tests.
ruvector-graph-transformer-node
Node.js NAPI-RS bindings for ruvector-graph-transformer with 22+ methods and 20 tests.
ruvector-graph-transformer-wasm
WASM bindings for browser-side graph transformers with proof verification.
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.
Epsilla
Open-source vector database designed for high performance similarity search and AI/ML workloads.
Multi-model DB supporting vectors, graphs, documents, key-value, time series.
Free and open-source.
