Author of the post here. I'm working on a browser-based interactive analysis tool based on these visualizations. It's nowhere near ready for release, but those who are interested can find a demo here:
This is not even an alpha yet - I plan to announce the initial release in the next month or so. Eventually, I would like to add the ability to upload, share and annotate files for analysis. Comments and criticisms welcome!
Frequency analysis and byte dot plots are definitely on the way. Do you have a concrete example of the digraph frequency feature you can link me to? Any other feature suggestions are welcome too.
Regarding other space-filling curves - I'm in two minds about this. I've implemented z-order and the H-curve for binvis, but for different reasons neither of these are as useful as the Hilbert curve, so they're not exposed in the interface. My feeling now is that I should pick one locality preserving layout and one intuitive layout to keep things simple and usable. I want binvis to be a workaday tool, so I'm keeping my space-filling curve geekery to another project (https://github.com/cortesi/scurve).
http://binvis.io
This is not even an alpha yet - I plan to announce the initial release in the next month or so. Eventually, I would like to add the ability to upload, share and annotate files for analysis. Comments and criticisms welcome!