In couple of my previous jobs I often needed to quickly understand large, disparate codebases, without having them compile. I've used Source Insight (https://w

In couple of my previous jobs I often needed to quickly understand large, disparate codebases, without having them compile. I've used Source Insight (https://www.sourceinsight.com/ https://www.sourceinsight.com/) to do this with great success. SI builds the typical tree of nodes and dependencies, except it can do so without having to compile anything, and can do so with multiple languages. It also has absolutely superb code/fuzzy search experience. Really old school tool, for a while it was site licensed at Microsoft, ran by just a few devs here in Issaquah, WA.