Xinorbis is a very powerful hard disk, folder and storage analyzer available over on SourceForge. A good portion of it is open source and mainly written in Delphi. Other utilities included with it are written in C++ and C# which shows how easy it is into integrate Delphi and Object Pascal with other languages. According to the website “It uses a sophisticated mix of graphs, tables, and tree displays to give a complete, and unprecedented, picture of the contents of any hard disk, SSD, folder, removable or network drive. In fact, if your PC can see it, Xinorbis can scan it. Xinorbis makes it easy to see the contents, structure, file distribution, and file composition of any attached storage device. It includes fully customizable report generation in ASCII, CSV, HTML and XML.” As you can see it uses a Delphi style to implement a dark theme.