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GrandPerspective vs Disk Space Analyzer: catalog facts
GrandPerspective	Disk Space Analyzer
Free Free and open source under the GPL.	Freemium Free download, with a paid Pro version.
macOS	macOS
Saved scans can be compared to see what grew since last time Deletes or reveals a file straight from the map	Sunburst and treemap views of disk usage Lists the biggest files in order
macOS only, and the interface is deliberately plain	macOS only Some features require the paid version
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
Not stated if an account is needed	Not stated if an account is 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 October 1, 2026

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