Last modified
Tuesday, September 23, 2014

Description of App

OnyX is a multifunction utility for OS X which allows you to verify the startup disk and the structure of its system files, to run miscellaneous tasks of system maintenance, to configure some hidden parameters of the Finder, Dock, QuickTime, Safari, Mail, iTunes, login window, Spotlight, and many of Apple’s applications, to delete caches, to remove a certain number of files and folders that may become cumbersome, and more.



Free or Paid


Version Of macOS App Was Tested On


Accessibility Comments

This app is a must have for mac users that like to dig a little further into the operating system than os10 would typically permit through its own parameters. It also comes equip with a simple interface, which makes it possible to easily complete tasks such as cleaning and maintenance. It seems to be completely accessible.


The app is fully accessible with VoiceOver and is easy to navigate and use.


2 people have recommended this app

Most recently recommended by KE7ZUM 7 years 3 months ago



Submitted by KE7ZUM on Saturday, September 13, 2014

I'm surprised ther was not an apple vis entry on this wonderful app before. I have been using it since 2010 and did a podcast on it then when I was very new to the mac. I use it in conjunction with clean my mac2.

Submitted by Unregistered User (not verified) on Tuesday, September 23, 2014

Just to be clear, it is Apple who does not permit access to any of these parameters rather than the operating system itself.

Whilst I am extremely far from a ‘geek’, I think it is essential to dig deep into the bowels of any operating system to fully personalise it. This fully accessible tool [armed with a very informative integrated help system] almost takes care of that and so much more. It lacks some tweaks supplemented by the Secrets preference pane but it will suffice for most users.