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OnyX is a multifunction utility that you can use to verify the startup disk and the structure of its system files, to run miscellaneous maintenance and cleaning tasks, to configure parameters in the Finder, Dock, Safari, and some of Apple's applications, to delete caches, to remove certain problematic folders and files, to rebuild various databases and indexes, and more.

What's New

Version 3.4.4:
  • Accessibility bug corrected that prevented OnyX from running in some cases
  • The window position is correctly saved now
  • New Polish translation added
  • Misc. minor corrections made


  • macOS 10.13.x

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OnyX User Discussion

4.4 1034


Current Version (3.x)


Downloads 4,963,094
Version Downloads 7,006
License Free
Date 24 Apr 2018
Platform Intel 64 / OS X
Price Free
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