I use a piece of software called Dendroscope to kick out circular cladograms, as documented here: https://software-ab.informatik.uni-tuebingen.de/download/den...

It works OK, but it means directory listings first have to be kicked into a Newick tree format: https://en.wikipedia.org/wiki/Newick_format

I use a variety of other graph-based tools too, such as Maltego, Gephi, and Cytoscape, but to be honest I do so in a very ad-hoc way for specific tranches of data ( afile collection, or a relevant social media stream) and keep most of it my head. Otherwise I will get hung up on tooling rather than the underlying material.

Not OP, but I'm guessing it's something similar to how I watched fast moving logs to look for anomalies:

I reduced text size enough, to a point it wasn't really text I was looking, but patterns of line content and length. This was enough to see that things were running proper.