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QDirStat vs GrandPerspective: catalog facts
QDirStat	GrandPerspective
Free Free and open source under the GPL version 2.	Free Free and open source under the GPL.
macOS, Linux	macOS
Treemap plus tree view of disk usage No KDE dependencies	Saved scans can be compared to see what grew since last time Deletes or reveals a file straight from the map
No Windows version Interface is dense for casual users	macOS only, and the interface is deliberately plain
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-2.0
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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