Storing and querying RDF in Neo4j by Bob DuCharme.
From the post:
In the typical classification of NoSQL databases, the “graph” category is one that was not covered in the “NoSQL Databases for RDF: An Empirical Evaluation” paper that I described in my last blog entry. (Several were “column-oriented” databases, which I always thought sounded like triple stores—the “table” part of they way people describe these always sounded to me like a stretched metaphor designed to appeal to relational database developers.) A triplestore is a graph database, and Brazilian software developer Paulo Roberto Costa Leite has developed a SPARQL plugin for Neo4j, the most popular of the NoSQL graph databases. This gave me enough incentive to install Neo4j and play with it and the SPARQL plugin.
As Bob points out, the plugin isn’t ready for prime time but I mention it in case you are interested in yet another storage solution for RDF.