Total Commander - A Shareware file manager for Windows® 95/98/ME/NT/2000/XP/Vista/7, and Windows® 3.1.
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.
Double Commander - Double Commander is a cross-platform open source file manager with two panels side by side.
DiskBoss - A file manager with a focus on storage side of things: Monitoring, classing, storage, duplicate...
XYplorer - File Manager for Windows
DiskWave - DiskWave is a free utility to help you determine where most of your hard drive space is consumed.