TreeViz [randelshofer.ch] is an amazingly small and elegant application (working on all OS platforms) that is able to visualize large data structures organized in a tree by 7(!) different interactive data visualization techniques: Hyperbolic Tree, Circular Treemap, Rectangular Treemap, Sunburst Tree, Icicle Tree, Sunray Tree and Iceray Tree. The project currently consists of a file browser demonst