TreeSize is a small and useful utility that shows you how your disk space is being used and which folders use up the most space. The program can be launched from the context menu of a folder or drive and displays a tree view with the overall size of the selected folder and its subfolders. Each folder can be expanded in an Explorer-like manner to view the size of its subfolders. Scanning is done in the background, so you can already see results while TreeSize is working without having to wait. The results can be printed in a report. This version is a slimmed down, but fully functional and free version of TreeSize Pro and does not offer the graphical pie charts.