WinDirStat

WinDirStat is a free and open-source graphical disk usage analyzer for Microsoft Windows. It presents a sub-tree view with disk-use percentage alongside a usage-sorted list of file extensions that is interactively integrated with a colorful graphical display (a treemap).

What is WinDirStat ?

WinDirStat is a program that allows you to find disk space hogs at a glance. It achieves that by displaying a drive, drives or directories in a treemap that assigns bigger areas to bigger files and directories. Making those areas visually separate by coloring and other means allows you to see literally at a glance what the space hogs are and where to dig deeper.

The directory tree is simultanously shown as a treelist and as a treemap. One can effortlessly gain an impression of the proportions on the hard disk(s).

Major features

• 3 views, Directory tree, Treemap and Extension list, coupled with each other,

• Built-in cleanup actions including Open, Delete, Show Properties,

• User defined cleanup actions (command line based),

• Language is English by default; further translations can be added as resource DLLs,

• Online-Help,

• A little setup.exe which installs the files and shortcuts.

How does WinDirStat work?

WinDirStat scans your hard drive and creates a visual representation of the disk usage using coloured rectangles. Each rectangle represents a file or folder, with larger rectangles indicating larger file sizes.