I don't want to say this is a rip-off, but it does share a remarkable resemblance to Ted Nelson's pre-Berners-Lee hypertext Project Xanadu (http://en.wikipedia.org/wiki/Project_Xanadu). Here's a recent screenshot http://www.open-hypervideo.org/img/xanadu.jpg.

That man has been trying to get traction on it since 1960. He's quite remarkable.

Actually, reading their blurb is like reading his work from then. If you know the story of Nelson and Xanadu, the lack of credit to him is a little unforgivable.