gFacet is a tool for graph-based visualization of RDF data developed as part of the Visual Data Web toolset and based on the Adobe Flex open source framework. Using SPARQL to access the user's dataset, it integrates filtering based on facets represented as nodes within the visualization to enable users to select which they wish to work with and create custom search interfaces.
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gFacet was mentioned in this research abstract https://raw.githubusercontent.com/lehkost/ToolXtractor/master/data/xml/2015/SIMPSON_John_Edward_Building_Better_Linked_Data___Ontol.xml