Graph Layers for Relational Databases, Ranked Monthly

Graph layers that add graph capabilities to relational databases or query relational tables in place, ranked monthly across adoption, activity, community and research signals.

Apache AGE leads with a score of 61.9, followed by Ontop (58.8) and Google Cloud BigQuery Graph (54.0) — 14 engines ranked, September 2026.

# 1mo Name Score Tier Type License Language Query Languages
1 ▲1 61.9 Strong Property Graph Apache-2.0 C SQLopenCypher
2 ▼1 58.8 Strong RDF Apache-2.0 Java SPARQL
3 ▲1 54.0 Strong Property Graph Proprietary - GQLSQL/PGQ
4 ▼1 51.7 Strong Property Graph Proprietary - GQLSQL/PGQ
5 ▲2 50.0 Strong Property Graph MIT C++ SQL/PGQ
6 = 48.3 Growing Property Graph Proprietary - GremlinopenCypher
7 ▼2 47.9 Growing Property Graph Apache-2.0 C SQLopenCypher
8 = 41.3 Growing Property Graph PostgreSQL C SQL/PGQ
9 ▲1 40.6 Growing Other Proprietary - Vadalog
10 new 39.3 Growing Property Graph Apache-2.0 C SQLopenCypher
11 ▼2 38.0 Growing Other Proprietary Julia RelSQL
12 ▼1 35.3 Growing Property Graph MIT C openCypher
13 ▼1 20.5 Emerging Property Graph Apache-2.0 Rust SQL
14 new 17.7 Emerging Property Graph MIT TypeScript Custom API