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K4DirStatgdu
Free

Free to use, with source code published on GitHub.

 Free

The open-source application is available without a license fee.

Linux Windows, macOS, Linux
  • Shows directory sizes both as a list and as a treemap
  • Works like a graphical version of du
  • Interactive size inspection with parallel scans
  • Built on Qt 5 and KDE Frameworks 5, so it fits a KDE desktop best
  • Documentation lives in a GitHub wiki rather than a dedicated site
  • Parallel scanning offers less benefit on mechanical disks.
Downloadable app Downloadable app
Open source Open source
License not stated License: MIT
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked September 23, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.