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Disk Space Analyzer vs GrandPerspective: catalog facts
Disk Space Analyzer	GrandPerspective
Freemium Free download, with a paid Pro version.	Free Free and open source under the GPL.
macOS	macOS
Sunburst and treemap views of disk usage Lists the biggest files in order	Saved scans can be compared to see what grew since last time Deletes or reveals a file straight from the map
macOS only Some features require the paid version	macOS only, and the interface is deliberately plain
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
Not stated if an account is needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 22, 2026

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