Gephi Blueprints plugin by David Suvee.
From the homepage:
The Gephi Blueprints plugin allows a user to import graph-data from any graph database that implements the Tinkerpop Blueprints generic graph API. Out of the box, the plugin provides support for TinkerGraph, Neo4j, OrientDB, Dex and RexterGraph. Additionally, it also provides support for the FluxGraph temporal graph database.
Not to mention having a short list of interesting graph software to boot!