Compare software

OmniDiskSweeper vs GrandPerspective: catalog facts
OmniDiskSweeper	GrandPerspective
Free Free download from The Omni Group.	Free Free and open source under the GPL.
macOS	macOS
Plain list of files sorted by size Trash or open files directly from the list	Saved scans can be compared to see what grew since last time Deletes or reveals a file straight from the map
macOS only List view only, no treemap or chart	macOS only, and the interface is deliberately plain
Downloadable app	Downloadable app
Closed source	Open source
License not stated	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.