OrientDB is an open source, NoSQL DBMS written in Java with the features of both Document and Graph databases. It is incredibly fast and runs extremely well on commodity hardware. It can run as multiple stand-alone, distributed servers or fully embedded in the JVM.
To access OrientDB Studio, go to http://YOUR_VM_PUBLICIP:2480
To find the OrientDB root password, view your VM's boot diagnostics log and search for YOUR ORIENTDB ROOT PASSWORD