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SPECIFICTION
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WinDirStat

windirstat.net

Free plan Windows
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Spec score 8.4 #18 of 105 in Disk Space Analyzers

What it is

WinDirStat is a free, open-source disk usage analyzer and cleanup assistant for Microsoft Windows. It scans drives, folders, network shares, and MTP devices, then shows results in a file tree, extension list, treemap, flame graph, or sunburst. Users can compare logical and physical sizes, search by name, size, type, or owner, and compare file content hashes to locate duplicates. Scan snapshots can be saved and reopened; reports can be exported as CSV or JSON, and scans can be automated. The software includes cleanup tools and attempts to recover deleted files from local NTFS, exFAT, and FAT drives. Storage Analytics estimates monthly savings for configurable storage tiers from file sizes and modification ages, but does not move files or configure a storage service. Permission entries can be scanned and exported, though reports do not determine an individual user’s effective access through all group memberships. Downloads include Windows x64, x86, and ARM64 installers, portable archives, and a Microsoft Store package. The project lists support for Windows 7 through 11 and Windows Server 2008 R2 through 2025; other versions are unsupported.

Spec sheet

Purpose
WinDirStat is a free, open-source disk usage analyzer and cleanup assistant for Microsoft Windows.Read 11 Oct 2026 · windirstat.net
Desktop platforms
WindowsRead 23 Sep 2026 · windirstat.net
Free plan
YesRead 23 Sep 2026 · windirstat.net
Support
The project provides a user guide and wiki, GitHub issue reporting, a subreddit, and a project blog.Read 11 Oct 2026 · windirstat.net
License
WinDirStat is distributed under the GNU GPL version 3 or later and may be used free of charge in personal or commercial settings.Read 11 Oct 2026 · windirstat.net
Founded
2003Read 28 Sep 2026 · windirstat.net
Cleanup and recovery
The product offers cleanup tools and attempts to recover deleted files from local NTFS, exFAT, and FAT drives.Read 11 Oct 2026 · windirstat.net
Compatibility
The project says it is developed for and tested on Windows 7, 8, 8.1, 10, 11, and Windows Server 2008 R2 through 2025, while other versions are unsupported.Read 11 Oct 2026 · windirstat.net
Disk usage views
It presents scan results in a file tree, extension list, treemap, flame graph, or sunburst and can compare logical and physical sizes.Read 11 Oct 2026 · github.com
Downloads
The download page lists Windows x64, x86, and ARM64 installers, portable ZIP and 7z archives, and a Microsoft Store package.Read 11 Oct 2026 · windirstat.net
Exportable reports
YesRead 23 Sep 2026 · windirstat.net
File-type breakdown
YesRead 23 Sep 2026 · windirstat.net
Origin
Bernhard Seifert wrote WinDirStat after finding no equivalent to KDE's KDirStat for Microsoft Windows, and Oliver Schneider and Bryan Berns later took responsibility for the project.Read 11 Oct 2026 · windirstat.net
Permissions
It can scan and export permission entries, but its report does not calculate a particular user's effective access through all group memberships.Read 11 Oct 2026 · github.com
Reports and automation
WinDirStat can save and reopen scan snapshots, export CSV or JSON reports, and automate scans.Read 11 Oct 2026 · windirstat.net
Scan scope
files_foldersRead 23 Sep 2026 · windirstat.net
Scanning
It scans drives, folders, network shares, and MTP devices, with elevated scanning enabling accelerated scans on local NTFS drives.Read 11 Oct 2026 · github.com
Search and duplicates
Users can search by name, size, type, or owner and compare file content hashes to find duplicates.Read 11 Oct 2026 · windirstat.net
Security contact
Security issues or private security questions can be emailed to the WinDirStat Team; other issues and translation errors should be reported through GitHub Issues.Read 11 Oct 2026 · windirstat.net
Storage analytics
Storage Analytics estimates monthly savings for configurable storage tiers using file sizes and modification ages; it does not move files or configure a storage service.Read 11 Oct 2026 · github.com
Treemap view
YesRead 23 Sep 2026 · windirstat.net

Plans and prices

WinDirStat Free Free software for personal or commercial use · Windows Read 11 Oct 2026 · windirstat.net

Every WinDirStat plan and price →

Strong points and limits

Strong points

  • Shows usage in five view types.
  • Searches by name, size, type, or owner.
  • Exports CSV or JSON reports.
  • Free for personal and commercial use.
  • Offers x64, x86, and ARM64 installers.

Limits

  • Windows only.
  • Other Windows versions are unsupported.
  • Permission reports do not calculate effective access across group memberships.
  • Storage Analytics does not move files or configure storage.

Who it suits

WinDirStat suits Windows users who want to inspect disk usage, find duplicate content, export reports, or manage cleanup. Its supported Windows versions and scan scope are worth checking before use.

Verdict

WinDirStat combines detailed disk usage views with reporting, search, and cleanup tools for Windows. Its permission reporting and storage estimates have specific limits, so users should account for those when choosing it.

Where Specifiction places it

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