NodeDB is a multi-modal DBMS that supports combines relational, vector, graph, document, columnar, and matrix data models.
Relational Document / XML Graph Vector Array / Matrix
SQL Cypher
Disk-oriented
Custom
Decomposition Storage Model (Columnar) N-ary Storage Model (Row/Record)
Log-structured
Shared-Everything
https://nodedb.dev/
https://github.com/NodeDB-Lab/nodedb
https://nodedb.dev/docs
MY
2026
SynapseDB
Commercial, Open Source
Rust
PostgreSQL
Linux
Apache v2, Business Source License