Graph Database in Java (other than Neo4J)

Question

Greetings,
Is there any open source graph database available other than Neo4J??

NOTE: Why not Neo4J?
Neo4J is openso

Answer 1

I suggest you to use Blueprints from tinkerpop, they allow you to use a graphDB of your choice (also from Neo4j and OrientDB). And they also provide an extension to use the db as rdf repository (using Sesame Sail).