TreeSize Professional

Powerful and flexible harddisk space manager for Windows. For each folder TreeSize Professional shows you the size, allocated and wasted space, number of files, 3D bar and pie charts, the last access date, the file owner, the permissions and more information. The results can be printed or exported to Excel, HTML, XML or ASCII. It also lets you search for old, big, obsolete, duplicate files. Unicode and Scheduled scans are supported.