Tree Size

The freeware can be started from the context menu of a folder or drive and shows you the size of this folder, including its subfolders in an Explorer-like fashion. Large folders can be identified at a glance thanks to the gradient bar displayed in the background. All scan results can be drilled down to file level and filters, e.g. for files of a certain type, can be applied. TreeSize Free will even scan smartphones and mobile devices.

TreeSize Free scans network drives and locally synchronized cloud shares (except on Windows servers and within a Windows domain) - just like TreeSize Personal!