Diagram data ontologies with classes and subclasses corresponding to nodes and branches. Provided by the Framework for Distributed Organizational Memories project.

Developer Brian McBride offers a Java-based API for abstract representation of RDF models via statement- and resource-centric methods.

Manage and publish data stemming from disparate sources with RDFGateway, a deductive server functioning on a the basis of a simple query language.

Validate integrity of data structures via a tool based on the Jena parser. Evaluate triples and graphs by pasting source code snippets into the provided Web form.

Perl-based API usage handles data integration from raw XML, configuration files, and LDAP. Part of a top-level document representation project.