Scala MongoDB driver http://mongodb.github.io/casbah/tutorial.html
Graph Visualization and Neo4j – Part Three http://maxdemarzi.com/2012/02/02/graph-visualization-and-neo4j-part-three/
Scala and Graph Databases with Gremlin-Scala http://bleibinha.us/blog/2013/10/scala-and-graph-databases-with-gremlin-scala