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Space Radar vs SquirrelDisk: catalog facts
Space Radar	SquirrelDisk
Free Free and open source under the MIT licence.	Free Free and open source.
Windows, macOS, Linux	Windows, macOS, Linux, Command line
Three chart types: sunburst, treemap and flamegraph Shows results while the scan is still running	Sunburst and treemap views Scans remote servers over SSH and cloud storage
Documentation is limited to the README Small hobby project without a dedicated website	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.