HD Tune - HD Tune Pro is a hard disk / SSD utility with many functions. It can be used to measure the drive's performance, scan for errors, check the health status (S. M. A. R.
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.
FakeFlashTest - Tests USB Flash drives and Flash memory SD cards to determine if they are fake (not full capacity).
DiskBoss - A file manager with a focus on storage side of things: Monitoring, classing, storage, duplicate...
USB Memory Stick Tester - Test for USB memory sticks
DiskWave - DiskWave is a free utility to help you determine where most of your hard drive space is consumed.