WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.

Windows Repair Toolbox - Windows Repair Toolbox is a software created to help you repair a Windows system, by making the...

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.

Tweaking - Tweaking is an all-in-one repair tool, helping you to fix large Windows problems such as registry errors, file permissions, as well as other issues with Internet Explorer, Windows Update, Windows Firewall, and many more.

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.

WinTweaks - Windows Tweaking utility that can improve your Windows performance and security with a simple mouse click by tweaking Windows services in an automatic and very safe way.