OnyX (Mavericks) logo

OnyX (Mavericks) for Mac

By Titanium's Software Free Editors' Rating

Download.com has removed the direct-download link and offers this page for informational purposes only.

Download.com has removed the direct-download link following the publisher's request and offers this page for informational purposes only.

Editors' Review

Download.com Staff May 20, 2014

OnyX (Mavericks) for Mac is a maintenance and optimization software tool created to evaluate the integrity of startup files, but it can do more than checking and verification. As the name implies, it works best with Mac OS X 10.9 or the Mavericks version.


Enables modifications on Mac OS X elements: OnyX (Mavericks) for Mac does a great job at bringing out the functions you may not know in Mac OS X. You can modify the Dock, QuickTime, Safari, iTunes, Mail, Spotlight, and the Log-in, as well as disable the creation of DS_Store files. You can also specify the format of the images saved during screen captures.

Comprehensive cleaning: The Cleaning function provides a quick way to clean the system and user cache, font cache, browser cache, system logs, automatically saved documents, temporary and recent items, and the Trash.

Automated system tasks: With this software you can automate maintenance, rebuilding, and cleaning tasks. These tasks include the repair of permissions, execution of maintenance scripts, display of folders' contents, cleaning of cache, and the rebuilding of Spotlight and Mail indexes.


Dangerous for inexperienced users: Given the extent of system modifications it can implement, Onyx is not intended for those who lack the right know-how in changing advanced configurations. There are several warnings in the application, but there is no way to stop unintended changes. OnyX is a tempting tool for those who are trying to become advanced users.

Cannot be password-secured: If it's used on a shared computer and falls in the hands of inexperienced users, it may cause system problems.

Bottom Line

With its neat layout of buttons and configuration screens and comprehensive cleaning features, OnyX (Mavericks) for Mac proves to be an accessible system optimizer. If you run Mac OS X 10.9, this is one application you should consider using. You don't even have to spend a cent for it.

Full Specifications

What's new in version 2.9.1


Release December 3, 2014
Date Added December 3, 2014
Version 2.9.1

Operating Systems

Operating Systems Macintosh, Mac OS X 10.10
Additional Requirements None


Total Downloads 207,009
Downloads Last Week 0
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Developer's Description

OnyX is a multifunction utility for OS X. It allows you to verify the Startup Disk and the structure of its System files, to run misc tasks of system maintenance, to configure the hidden parameters of the Finder, Dock, Spotlight, and of some of Apple's own applications, to delete caches, to remove a certain number of files and folders that may become cumbersome and more.
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