

Updated May 30, 2018: This guide has been updated to offer only the best disk analyzer tools for Windows 10. SpaceMonger (opens in new tab) ($14.99).Here are some additional software solutions you can try if the above aren't quite what you're searching for: Lastly, SpaceSniffer is available as a portable version for easy plug-and-scan, but be sure to remember to run the app as administrator to allow access to various locations on your drives. While performing essentially identical to WinDirStat, a downside of using this tool is the lack of a traditional file tree and extension view. This keeps it simple when managing more than one storage device. By using a Treemap visualization layout, you have immediate perception of where big folders and files are placed on your devices. Multiple drives are displayed using a window-per-mount location. SpaceSniffer is a freeware and portable tool application that lets you understand how folders and files are structured on your disks. If you're having a hard time with WinDirStat's graphical mapping, SpaceSniffer's implementation can be easier to read, thanks to clear labeling and utilized hierarchy.

Should you wish to use another free disk analyzer, SpaceSniffer is a great alternative to CCleaner and WinDirStat.
