1)   SizeExplorer Pro 4.6
Powerful disk space usage analyzer with folder size, charts, statistics, duplicates finder, clickable reports, complete file listing, exports, printing, search, file management, loading and saving of explorations (snapshots) and compare of snapshot.

 2)   Disk Analyzer 1.9.21
Disk usage analyzer will help you to understand all these and other subtleties of the disk space organization.

 3)   Extensions for Windows 1.0
Extensions for Windows is the first community driven, modular upgrade for Windows XP and Vista. It contains numerous new features, tools and applications seamlessly integrated with Windows, including 2-Panel Windows Explorer, Screen Capture and more.