OnyX for MAC
Free Mac maintenance utility: verify system files, run cleaning tasks, delete caches, uninstall apps and adjust Finder, Dock and Safari settings.
OnyX Overview
OnyX is a multifunction utility for macOS from Titanium Software. You can use it to verify the structure of the system files, perform cleaning and computer maintenance tasks, uninstall applications, and configure parameters in the Finder, Dock, Safari and some Apple applications. It can also delete caches, remove certain problematic folders and files, and rebuild various databases and indexes. It gives you a clean interface to many tasks that would otherwise require complex commands typed in a command-line interface.
There is a specific version of OnyX for each major macOS version, and it matters: the developer says to use the correct one and not to try a version intended for an earlier system. OnyX 5.1.1 is for macOS Golden Gate 27 on Macs with Apple silicon. Older versions remain available on the same page but are no longer updated, such as 5.0.6 for macOS Tahoe 26 and 4.8.5 for macOS Sequoia 15, both for Intel-based Macs and Macs with Apple silicon. OnyX is free to use and the developer accepts donations. Version 5.1.1 improves the application uninstaller and several cleaning tasks.
Key Features
OnyX puts many macOS maintenance jobs behind one clean interface.
- System check: verify the structure of the system files.
- Cleaning: perform cleaning and computer maintenance tasks.
- Caches: delete caches.
- Uninstaller: uninstall applications.
- Settings: configure parameters in the Finder, Dock, Safari and some Apple applications.
- Repairs: remove certain problematic folders and files.
- Rebuild: rebuild various databases and indexes.
- No commands needed: tasks that would otherwise need complex command-line typing.
What’s New in Version 5.1.1
OnyX 5.1.1 brings fixes and improvements.
- Reduced number of icons in menus
- Issue corrected with the path for screenshots
- Issue corrected with the “Only show open applications” option
- Deleting the Recent Items and cleaning the internet files improved
- Obsolete options deleted
- Application uninstaller improved
OnyX FAQ
Is OnyX free?
Yes. OnyX is free to use, and the developer accepts donations.
Which macOS version does OnyX need?
OnyX 5.1.1 is for macOS Golden Gate 27. There is a specific version for each major macOS version, so use the one made for your system.
Can I use OnyX on an older macOS?
Yes, with the matching older version from the same page, such as 5.0.6 for macOS Tahoe 26 or 4.8.5 for macOS Sequoia 15. These are no longer updated.
Does OnyX run on Intel Macs?
OnyX 5.1.1 is for Macs with Apple silicon. OnyX 5.0.6 for macOS Tahoe 26 and earlier versions run on Intel-based Macs.
What does OnyX do?
It verifies system files, performs cleaning and maintenance tasks, uninstalls applications, deletes caches, rebuilds databases and indexes, and configures system settings.
Can OnyX uninstall apps?
Yes. It includes an application uninstaller, which version 5.1.1 improves.
Can OnyX change Finder and Dock settings?
Yes. It configures parameters in the Finder, Dock, Safari and some Apple applications.
Who makes OnyX?
Titanium Software, which has developed its apps since 2003 so that all Mac users can use them freely.
Can I install OnyX with Homebrew?
Yes. Run brew install --cask onyx.
Where does the OnyX download on onyx.FULLMAC.app come from?
The download button leads to the official OnyX page at https://www.titanium-software.fr/en/onyx.html. onyx.FULLMAC.app does not change or repackage the app.
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FULLMAC.app does not host this app. Download buttons lead to the developer’s own pages.