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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 3.1.6:
  • Deleting the logs improved
  • Preferences pane reorganized
  • New option: Delete Mail's existing index
  • Update routine improved
  • New version integrated 3.12.1 of sqlite3
  • Integrated new version of Network Link Conditioner
  • Some bugs corrected


  • OS X 10.11

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5 972


Current Version (3.x)


Downloads 4,684,742
Version Downloads 23,219
License Free
Date 18 Apr 2016
Platform Intel 64 / OS X
Price Free
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