WinDirStat - Windows Directory Statistics
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 on Debian-derivatives) and for MacOS X it would be Disk Inventory X or GrandPerspective. Please visit the WinDirStat blog for more up-to-date information about the program. On start up, it reads the whole directory tree once and then presents it in three useful views: The directory list, which resembles the tree view of the Windows Explorer but is sorted by file/subtree size,The treemap, which shows the whole contents of the directory tree straight away,The extension list, which serves as a legend and shows statistics about the file types.
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