RDFStore uses a modelstatement centric approach to create, manage and query RDF models see pic. It is under development an extension of th API to make the software resource centric as well; it will allow to access resources, properties, values and statements in much more logical way. A full perltie interface will be implemented over the basic data types to let the user readwrite RDFStore nodes directly from Perl variables in principle.

Website: http://rdfstore.sourceforge.net/