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DaisyDisk vs gdu: catalog facts
DaisyDisk	gdu
Paid A one-time purchase is required. The software is closed source.	Free The open-source application is available without a license fee.
macOS	Windows, macOS, Linux
Collect files into a holding area and delete them in one confirmed step Fast scans with a genuinely pleasant interface	Interactive size inspection with parallel scans
Paid application, macOS only	Parallel scanning offers less benefit on mechanical disks.
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
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.