WinDirStat is a disk usage statistics viewer and cleanup tool for various versions of Microsoft Windows. Note: if you are looking for an alternative for Linux, you are looking for KDirStat (apt-get install kdirstat or apt-get install k4dirstat on Debian-derivatives) or QDirStat and for MacOS X it would be Disk Inventory X or GrandPerspective. Sonos for mac. WinDirStat is popular but can be little complicated at times. Security software for mac. But fret not as you can find several alternatives that are far more user-friendly. What does mac stand for. So if you're one of those who are looking for WinDirStat alternatives, read this blog to learn more.