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Maintenance vs OnyX: catalog facts
Maintenance	OnyX
Free Free to use, with optional donations to the developer.	Free Free to use; the developer accepts donations.
macOS	macOS
Runs maintenance tasks without terminal commands Clears application, font and system caches	Many maintenance tasks without typing Terminal commands Access to hidden settings in Finder, Dock and Safari
macOS only You must download the version that matches your macOS release	Each version works only with one macOS release Latest version requires an Apple silicon Mac
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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