Does anyone know about tools designed to help a programmer quickly understand the architecture of a system? Specifically tools that are automated, e.g. how Doxygen generates a class inheritance tree diagram.

Glamorous Toolkit ships with reasonably extensive analysis support for several languages. In our case, the emphasis is not on generic automation, but on allowing you to build your own views over the system.

Cameron Yick gave a talk at react conf on automated codebase visualization that included several examples. https://github.com/hydrosquall/code-maps-frontend

Hi, @Will, me and @Maeliza are building CodistAI (https://codist-ai.com) which, among few other things, try to solve this problem. We will be happy to talk with you.

Thanks for the references everyone!

@Will Did you check out https://www.sourcetrail.com/?

As @Alex Wein mentioned, here are the links and slides to accompany the above video :) - https://github.com/hydrosquall/code-maps-frontend