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OpenDisk vs SquirrelDisk: catalog facts
OpenDisk	SquirrelDisk
Free Free and open source under the MIT licence.	Free Free and open source.
macOS	Windows, macOS, Linux, Command line
Interactive sunburst view with one-click cleanup Incremental repeat scans	Sunburst and treemap views Scans remote servers over SSH and cloud storage
macOS only Requires macOS 15 Sequoia or later	Visual charts can be less precise than a plain sorted list
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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