OnyX for Mac Download

Onyx for Mac

One of my favourite software utilities is OnyX for Mac. It’s a multifunctional tool that allows you to verify startup disk, repair it, verify/repair permissions, clean caches, logs, run system maintenance, configure hidden parameters and more. Best of all, its free!

Download OnyX for Mac

OnyX is compatible on versions of OS X 10.2 and later, but you need the right version of OnyX on your Mac, otherwise it won’t work:

Download OnyX 2.9.6 for Mac OS X 10.10 Yosemite
Download OnyX 2.8.8 for Mac OS X 10.9 Mavericks
Download OnyX 2.7.4 for Mac OS X 10.8 Mountain Lion
Download OnyX 2.4.8 for Mac OS X 10.7 Lion
Download OnyX 2.4.0 for Mac OS X 10.6 Snow Leopard
Download OnyX 2.0.6 for Mac OS X 10.5 Leopard
Download OnyX 1.8.6 for Mac OS X 10.4 Tiger
Download OnyX 1.5.3 for Mac OS X 10.3 Panther
Download OnyX 1.3.1 for Mac OS X 10.2 Jaguar

Warning – Before Using OnyX

OnyX is not problem-free, and no user is infallible. Back up your data using Time Machine or any third-party backup utility.

Using OnyX for Mac

I recommend OnyX because it provides an easy way for the average user to clear out unnecessary files from their Mac. It also provides an interface to turn on/off hidden settings that Apple don’t let you change.

By default, Mac OS X does a pretty good job of keeping itself cleansed of unnecessary files. But if you’re a heavy user, or your Mac is old, it might be a good idea to run OnyX to get rid of all the old caches, logs, etc.

Once OnyX has performed a SMART test and verified your startup disk, you can enter your login password and you’ll be presented with the main window.

The main feature I use is ‘Cleaning’, which gives you lots of options to delete caches,

Hidden features of Mac OS X

OnyX allows you to turn on/off various features in the Finder, Dock, Spotlight, QuickTime, Safari, Mail, Login and more.

I’m not a fan of graphic effects, so I keep them turned off. There isn’t really any benefit to doing this, it’s just personal preference.

General Settings:

  • Graphic effects: Window Opening – OFF
  • Number of recent items: 50
  • Remove alert message on first opening apps downloaded from Internet – ON

Finder Settings:

  • Graphic effects – OFF
  • Show hidden files and folders – ON
  • Show item path in the window title – ON
  • Turn on confirmation warning when changing a file extension – OFF
  • Path Bar – From the root
  • Finder/File/View/Go menus – all ON

Dock Settings:

  • Graphic effects – OFF
  • Automatically hide and show the Dock – ON
  • Turn off animation – YES


  • Turn on Develop menu – ON


  • Enable graphic effects – OFF


  • Disk Utility – Verify Disk Images (.dmg) – OFF