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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 3.2.5:
  • OnyX.dmg is a signed disk image now (identified developer)
  • Bug corrected that occurred with the OnyX log when emptying the Trash
  • Bug corrected that occurred when choosing some animated desktop backgrounds
  • Display modified in the OnyX log when erasing a file or a folder
  • Deleting the misc cache improved
  • New option: Show/hide Quick Look


  • macOS 10.12 or later

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OnyX User Discussion

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4.6 997


Current Version (3.x)


Downloads 4,845,544
Version Downloads 19,909
License Free
Date 11 Apr 2017
Platform Intel 64 / OS X
Price Free
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