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DaisyDisk vs OpenDisk: catalog facts
DaisyDisk	OpenDisk
Paid A one-time purchase is required. The software is closed source.	Free Free and open source under the MIT licence.
macOS	macOS
Collect files into a holding area and delete them in one confirmed step Fast scans with a genuinely pleasant interface	Interactive sunburst view with one-click cleanup Incremental repeat scans
Paid application, macOS only	macOS only Requires macOS 15 Sequoia or later
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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