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GrandPerspective vs Filelight: catalog facts
GrandPerspective	Filelight
Free Free and open source under the GPL.	Free Free and open source under the GPL.
macOS	Windows, Linux
Saved scans can be compared to see what grew since last time Deletes or reveals a file straight from the map	The ring chart makes the biggest space consumers immediately obvious Scans remote and network locations as well as local disks
macOS only, and the interface is deliberately plain	Pulls in KDE libraries on non-KDE desktops
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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