Visualbox allows you to create visualizations based on Linked Open Data. The goal of Visualbox is to facilitate the creation of visualization without the need to learn Javascript libraries. You do need to know a bit of SPARQL and some notions of HTML though.
Visualbox is a simplified version of LODSPeaKr, a framework to create Linked Data-based applications.
Visualbox comes with several endpoints and namespaces configured by default but you can edit them or add more.
There are several examples available in the demo site (all of them use data from DBpedia). These examples are also included in this installation, you can look for them in the admin menu.
The easiest way to create new visualizations is using the Component Editor.
You can also use the command line tool (info from the LODSPeaKr wiki):