This provides a faceted browser on top of SPARQL endpoint supporting COUNT/GROUP BY queries
The interface looks similar to Google Refine as I am reusing their lovely interface code( JS & CSS)
Many details of the interface are easily configured in two JSON files (will soon make them one file): configuration.json and facets.json
some more details at: http://sheeeer.wordpress.com/2012/02/08/a-faceted-browser-over-sparql-endpoints/