H2testw - Data integrity test for USB sticks and other media
SpaceSniffer - SpaceSniffer is a freeWare (donations are welcome) and portable tool application that lets you understand how folders and files are structured on your disks.
ChipGenius - ChipGenius is a simple yet nimble software application that lets you Extracts and presents information about all the connected USB devices.
WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.
USB Flash Drive Tester - Our Clients
WizTree - WizTree quickly finds the files and folders using the most space on your hard drive. It scans the MFT (Master File Table) instead of crawling the entire disk which makes it very fast.