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ncdu vs DaisyDisk: catalog facts
ncdu	DaisyDisk
Free Free and open source under an MIT-style licence.	Paid A one-time purchase is required. The software is closed source.
macOS, Linux, Command line	macOS
Works over SSH on a server with no graphical environment Parallel scanning with -t8 is much faster on large trees	Collect files into a holding area and delete them in one confirmed step Fast scans with a genuinely pleasant interface
No Windows build Colours are off by default because they were not legible in all terminals	Paid application, macOS only
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
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 21, 2026	Official website Full listing and sources Checked September 22, 2026

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