It is not a secret even if we try to hide from it.
The dependencies in writing any application today is a nightmare and a lot of work to maintain straight.
Google has a tool to look at some open-source project and as much as it is not the first of such tool, I like the graph mode available.
I was trying to find something interesting to look at but most java projects I looked at had simple graphs. I found this one that makes the tool visual shine a bit: