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gduDuc
Free

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

 Free

Free and open source.

Windows, macOS, Linux Linux, Command line
  • Interactive size inspection with parallel scans
  • Scales to hundreds of millions of files
  • Fast browsing from a stored index
  • Parallel scanning offers less benefit on mechanical disks.
  • Results reflect the last index run, not live disk state
  • Other systems need to build from source
Downloadable app Downloadable app
Open source Open source
License: MIT License: LGPL-3.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 24, 2026

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