OnyX 5.0.3 for macOS Tahoe 26

OnyX 5.0.3 for macOS Tahoe 26

OnyX — Maintenance and Customization for macOS

OnyX

OnyX is an all-in-one utility for maintaining, customizing, and troubleshooting your Mac. It brings together a wide range of advanced tools in a clear, intuitive interface—no scripts or complex commands required.

Use OnyX to:

  • Verify your file system
  • Rebuild Launch Services, Spotlight, and other system databases
  • Rebuild mailboxes, volume information, and .DS_Store files
  • Remove unnecessary files from selected locations
  • Run maintenance scripts and schedule startup, shutdown, or sleep actions
  • Show or hide files and folders
  • Verify checksums and securely erase files
  • Inspect application packages
  • Search for files and content on your Mac
  • Customize security settings and system behaviors
  • Adjust a variety of macOS and application preferences

OnyX incorporates features from the developer’s Maintenance, Deeper, and CalHash utilities, giving you a comprehensive collection of tools in one lightweight application.

Detailed documentation is included to explain each feature and help you use OnyX with confidence. Whether you’re performing routine maintenance, investigating a problem, or tailoring macOS to your preferences, OnyX puts powerful system tools within easy reach.

Version 5.0.3

  • Security pane improved
  • Issue corrected in the Info pane
  • Issue corrected that occurred when uninstalling OnyX
  • Deleting the Recent Items improved
  • Deleting the caches improved
  • Dock hidden functions improved
  • Many parts of the code optimized
  • Searching for and downloading an update optimized
  • User Guide updated and improved
disk cleaner, mac optimizer
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Frequently asked questions

How do I install the app?

Mount the image, drag the app into the "Applications" folder and launch it. If the system blocks the launch, allow it in "System Settings → Privacy & Security".

The app is damaged or won't launch

Reinstalling from a fresh image usually helps. Make sure your macOS version matches the one listed in the compatibility specs.

How do I update?

Download the new version from the site and install it over the current one — your settings will be preserved.

The download link doesn't work

Try a mirror or a download manager. For large files the browser often drops the connection.

How do I completely remove the app?

Use an uninstaller utility — it cleans up the service files that remain after moving the app to the trash.

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OnyX 5.0.3 for macOS Tahoe 26