graphviz

https://graphviz.org/

Graphviz is open source graph visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. It has important applications in networking, bioinformatics, software engineering, database and web design, machine learning, and in visual interfaces for other technical domains.

here's a script I wrote that parses the dependencies of a monorepo and uses graphviz to display them. It demonstrates the neato layout and a few adjustments to the styling to make it prettier.

For day 20 of this year's advent of code I used graphviz to make a graph that clarified the problem structure for me; there's an example of the output at that link.