OnyX for Mac
Maintenance and optimization tool.
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OnyX overview
OnyX is a multifunction utility that you can use to verify the structure of the system files; run cleaning and computer maintenance tasks; uninstall applications; configure parameters in the Finder, Dock, Safari, and some Apple applications; delete caches; remove certain problematic folders and files; rebuild various databases and indexes; and more. OnyX is a reliable application which provides a clean interface to many tasks that would otherwise require complex commands to be typed using a command-line interface.
What's new in version 4.9.9
- Issue corrected that occurred when opening the Settings pane
- Issue corrected in the Dock pane of the Parameters toolbar item
- Searching for and downloading an update improved (The curl command isn't used anymore.)
- Cleaning the internet files improved
- Added option to check the S.M.A.R.T. status in the Maintenance pane
- Deleting the application logs improved
- Deleting the application caches improved
- Application uninstaller improved
FAQ
What does Onyx for Mac do
OnyX is maintenance application that helps keep your Mac in tip top shape. It a multifaceted application that checks the health and structure of your Mac’s start-up disk. It is able to check the integrity of system files and take corrective action when issues are detected. It cleans cache files that slow your Mac over time, and cleans unwanted files and folders, rebuilds indexes and databases.
How to install Onyx on Mac
- Each version of macOS has a specific version of Onyx. Trying to use a non-compatible version with the wrong version of Onyx will result in the application not working correctly.
- Download the Onyx application version for your version of macOS.
- Look in your Downloads folder and locate the downloaded installation file, then run it by double clicking on it.
- Run through the installation steps.
- The application is now installed.
Is Onyx safe to use on Mac
Yes, Onyx is very safe to use on your Mac. It gives users an easy way to clean up their own Mac without needing to learn how to enter in complex commands or call in someone else to do it for you. You can clean up unwanted system files and keep your operating system in good working order to keep things running along smoothly.
How to clean Mac with Onyx
- Open the Onyx app by clicking on the installed Onyx icon.
- Once open, click on the Maintenance tab.
- Here you will be shown a list of terms under 3 categories: Rebuilding, Cleaning, Misc. options.
- Cleaning options are available to clean System, Applications, Internet and Log messages and reports.
- Select the items you want to clean, then click on ‘Run Tasks’.
How to use Onyx to make Mac faster
- Open the Onyx app by clicking on the installed Onyx icon.
- Once open, click on the Maintenance tab.
- Go to the Cleaning section and the Misc. options sections and select the appropriate options.
- Click on Run Tasks and allow the application to clear all the cache and log files that are slowing your Mac down.
- Allow the Tasks to finish and restart your Mac.
How to uninstall Onyx from Mac
- Make sure that you have closed Onyx completely.
- Click on the Finder in your Dock.
- Click on Applications in the Sidebar and find Onyx.
- Right click on Onyx and then select Move to Trash.
- Navigate to the Trash icon, right click on it and select Empty Trash.
- Onyx has now been uninstalled from your system.
OnyX for Mac
Free
In English
Version 4.9.9
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(1311 Reviews of OnyX)
Comments
User Ratings
Mar 1, 2026
Version: 4.9.6
I have used Onyx for many years, I think it is an awesome way to keep my devices in order. I miss not having Onyx available for keeping my devices in check. Edward Wentz
Feb 10, 2025
Version: 4.7.3
I have always found OnyX easy to use and it's also kept up to date. Cleans up the 'debris field' that the Mac leaves behind.
Sep 19, 2024
Version: 4.7.0
I have not moved to Sequoia yet (never a good idea with the first few releases of each Mac OS containing bugs. Also nothing "earth shattering in Sequoia. Sonoma works just fine), but I wili download and save this version of onyx. It is typically stable, and of course is a required program, at least for me.
Sep 12, 2024
Version: 4.6.1
This most recent version was released 6 days ago, September 6, 2024. Why listed again, with a date of September 12?
