Web Tree Visualisation

Tree is a web-site visualisation which featured at .club transmediale this year, with visually-pleasing results. There doesn't seem to be a way to navigate around the resulting forest, or save the data, which is a shame because it seems to be quite comprehensive and well-labelled. From the site:

"tree is a translation program. the simulation of real space by software as a starting point and basic question characterises the search for an algorithm (design specification) which illustrates a real tree. tree interprets each html page as a design specification; the html space determines the algorithm and generates the visual world of the translation beyond simulation."