WinDirStat is a free, open-source disk usage analyzer and cleanup assistant for Microsoft Windows. It scans multiple folders, drives, network shares, or MTP devices, and offers views such as largest files, file types, treemaps, sunbursts, and flame graphs. It supports searching by name, size, type, or owner, duplicate comparison, and saving or exporting scan reports.
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WinDirStat is a disk usage analyzer and cleanup assistant for Microsoft Windows. It scans drives, folders, network shares and connected MTP devices, then explores disk usage through sortable file lists, file-type statistics and interactive treemaps, sunbursts or flame graphs. It can find large or duplicate files, inspect permissions, estimate storage costs, export reports and run cleanup or deleted-file recovery tools.