ONgDB is an independent fork of Neo4j® Enterprise Edition version 3.4.0.rc02 licensed under AGPLv3 and/or Community Edition licensed under GPLv3

TuGraph: A High Performance Graph Database.

A transactional, relational-graph-vector database that uses Datalog for query. The hippocampus for AI!

Ontop is a platform to query relational databases as Virtual RDF Knowledge Graphs using SPARQL

Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance and scalability of …

Weaviate vector database – examples

Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search

Benchmark for vector databases.

Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/

Open-source vector similarity search for Postgres