[brainburp]

Interesting. But, I'm surprised no one mentions the 'originator' of this type of application: TheBrain from TheBrain Technologies LP. Perhaps because this is closed source commercial product? This product and approach was invented over 20 years ago and has all the features mentioned. One use case, Jerry's brain, has over 500K nodes and is still useful graphically.

Two problems with these types of things is 1. the graph is most useful on large displays. I have not tried the mobile apps. On a large data set I would imagine scrolling and zooming would be needed. 2. Search is still a key feature. Even with fully linked graph structure, finding something would take too long, 'tip of the tongue' recall problem.