Interesting to see this latest ranking come to my attention:
http://db-engines.com/en/ranking/graph+dbms
Look what's ranked 16th. Shame a decision was made to deprecate it
A graph database is a database that uses graph structures for semantic queries with nodes, edges, and properties to represent and store data.
Learn more on graph databases.
InterSystems Data Platform can support graph database storage because of its multi-model nature.