ShowMan - Program to help recover disk space.
SequoiaView - SequoiaView is a featured rich application that comes with the visualization technique to provide you a single view of files and documents that are stored in your hard drive.
TreeSize - TreeSize tells you where precious disk space has gone to.
DiskBoss - A file manager with a focus on storage side of things: Monitoring, classing, storage, duplicate...
WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.
DiskSavvy - DiskSavvy is a free, fast and easy-to-use disk space analyzer utility allowing one to analyze disk...