Existing applications of hypergraph
There are some applications of the hypergraph applet which might be of interest of you, if you know more applications, please tell me :
Patent concept map : This is a hyperbolic graph representation of a concept map related to patents, copyrights and other topics that would fall under the intellectual property category. It shows the patent concepts in a large hyperbolic tree and uses the hyperlink feature of hypergraph to link nodes that represent the same concept in different categories.
Pegasus, a collection of links related to information management (german).
Vacilando, a page related to travelling, uses HyperGraph as sitemap.