You can use to verify the startup disk and the structure of its system files

OnyX for Mac
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OnyX 3.5.8

  -  5.5 MB  -  Freeware
Free Download

Security Status

  • Latest Version

    OnyX 4.9.2

  • Operating System

    macOS 10.14 Mojave or later

  • User Rating

    Click to vote

  • Author / Product

    Titanium Software / External Link

  • Filename

    OnyX.dmg

  • MD5 Checksum

    ec6ed0c7063a837a7bb74ae4a5e21ba8

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of OnyX 3.5.8.


For those interested in downloading the most recent release of OnyX for Mac or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


We would love to hear from you

If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download OnyX 3.5.8
Why is this app published on FileHorse? (More info)

  • OnyX 3.5.8 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    OnyX 3.5.8 Screenshot 1
  • OnyX 3.5.8 Screenshot 2
  • OnyX 3.5.8 Screenshot 3
  • OnyX 3.5.8 Screenshot 4

What's new in this version:

- The screen saver no longer resets when running maintenance tasks
- Deleting the logs improved
- Issue corrected that occurred when deleting the browsers' history
- New option: Turn on/Turn off help tags
- Preferences pane simplified
- Help improved

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