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Dust vs Duc: catalog facts
Dust	Duc
Free The open-source application is available without a license fee.	Free Free and open source.
Windows, macOS, Linux	Linux, Command line
Size bars make large directories easy to spot	Scales to hundreds of millions of files Fast browsing from a stored index
Scanning is limited to files the current user can access.	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: Apache-2.0	License: LGPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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