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OmniDiskSweeper vs gdu: catalog facts
OmniDiskSweeper	gdu
Free Free download from The Omni Group.	Free The open-source application is available without a license fee.
macOS	Windows, macOS, Linux
Plain list of files sorted by size Trash or open files directly from the list	Interactive size inspection with parallel scans
macOS only List view only, no treemap or chart	Parallel scanning offers less benefit on mechanical disks.
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
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.