QTraveler is a linked data browser which help users frame the customized questions while traveling the Web of Data. It employs the concept of faceted search and hierarchical facets for query-building, then transforms these facets into SPARQL queries against DBpedia and provides the results.
QTraveler provides a high level of expressive power, while remains friendly interactive representations of the queries via using graph-based visualization. Thus it enables the inexperienced users to explore the knowledge in the Web of Data.
DBpedia is a community effort to extract structured information from Wikipedia and to make this information available on the Web. DBpedia allows you to ask sophisticated queries against Wikipedia, and to link other data sets on the Web to Wikipedia data.
DBpedia makes it easier for the amazing amount of information in Wikipedia to be used in new and interesting ways, and that it might inspire new mechanisms for navigating, linking and improving the encyclopaedia itself.