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  • The free-form nature of RDF triplestores or Semantic Graph Databases offers a lot of flexibility for constructing databases, but that freedom can also make it less obvious how to find arbitrary data for retrieval, error-checking, or general browsing. Gruff is a freely downloadable graphical triplestore browser that makes data retrieval more pleasant and powerful with a variety of tools for laying out cyclical graphs, displaying tables of properties, managing queries, and building SPARQL or Prolog queries as visual diagrams.

  • Use Gruff to display visual graphs of subsets of a store’s RDF resources and their links. By selecting particular resources and predicates, you can build a visual graph that displays a variety of the relationships in a triplestore. Gruff can also display tables of all properties of selected resources or generate tables with SPARQL or Prolog queries, and resources in the tables can be added to the visual graph.

Gruff is a free Knowledge Graph visualization product from Franz Inc.