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Disk Usage Analyzer vs Duc: catalog facts
Disk Usage Analyzer	Duc
Free Free GNOME application; donations go to the GNOME Foundation.	Free Free and open source.
Linux	Linux, Command line
Tree and chart views of folder sizes Scans folders, whole devices and online accounts	Scales to hundreds of millions of files Fast browsing from a stored index
Linux only Shows usage but has few cleanup features of its own	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 not stated	License: LGPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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