These are diagrams from a sample Python GitHub repository which has been set up for testing GitUML's Python parsing capabilities. You can select this sample repository via the new diagram wizard if you want to get started quickly and just have something to play with.

The source code in the repository is not a coherent application, but rather various modules and classes which exercise the GitUML Python parser, including a mix of Python 2 and Python 3 files to ensure GitUML can handle both flavours of Python.

Java programmers traditionally love UML diagrams. Java support includes visualising packages! It is astounding how much more sense you can make out of your source code when visualised in this way.

Here are a variety of diagrams extracted from various GitHub repositories, including an analysis of the startup of plantuml.jar from the PlantUML project, a diagram from the nice Java Design Patterns GitHub repository and some visualisations of the openjdk-jfx repository.

Remember, you can duplicate diagrams into your own account, by clicking on the duplicate link underneath any diagram's thumbnail. Then you change which files are being visualised. Explore!