OnyX

OnyX is a multifunction utility that you can use to verify the structure of the system files, to run miscellaneous maintenance and cleaning tasks, to configure parameters in the Finder, Dock, Safari, and some Apple applications, to delete caches, to remove certain problematic folders and files, to 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.

WARNING:
There is a specific version of OnyX for each major version of the operating system.
Use the specific version, and don't try to use a non-compatible version.

OnyX 3.7.6 for macOS Catalina 10.15

Requirements: Mac Intel computer running macOS Catalina 10.15.

Download (5.7 MB)Release Notes

Old versions

The development of the old versions is discontinued.
The applications are available but they will be not updated anymore.

OnyX 3.6.8 for macOS Mojave 10.14

Requirements: Mac Intel computer running macOS Mojave 10.14.

Download (5.6 MB)

OnyX 3.4.9 for macOS High Sierra 10.13

Requirements: Mac Intel computer running macOS High Sierra 10.13.

Download (8.3 MB)

OnyX 3.3.1 for macOS Sierra 10.12

Requirements: Mac Intel computer running macOS Sierra 10.12.

Download (30.8 MB)

OnyX 3.1.9 for OS X El Capitan 10.11

Requirements: Mac Intel computer running OS X El Capitan 10.11.

Download (33.1 MB)

OnyX 3.0.2 for OS X Yosemite 10.10

Requirements: Mac Intel computer running OS X Yosemite 10.10.

Download (29.6 MB)

OnyX 2.8.9 for OS X Mavericks 10.9

Requirements: Mac Intel computer running OS X Mavericks 10.9.

Download (19.6 MB)

OnyX 2.7.4 for OS X Mountain Lion 10.8

Requirements: Mac Intel computer running OS X Mountain Lion 10.8.

Download (23.4 MB)

OnyX 2.4.8 for OS X Lion 10.7

Requirements: Mac Intel computer running OS X Lion 10.7.

Download (19 MB)

OnyX 2.4.0 for Mac OS X Snow Leopard 10.6

Requirements: Mac Intel computer running Mac OS X Snow Leopard 10.6.

Download (22 MB)

OnyX 2.0.6 for Mac OS X Leopard 10.5

Requirements: Mac PowerPC or Intel computer running Mac OS X Leopard 10.5. OnyX only runs from an administrator account.

Download (20.5 MB)

OnyX 1.8.6 for Mac OS X Tiger 10.4

Requirements: Mac PowerPC or Intel computer running Mac OS X Tiger 10.4. OnyX only runs from an administrator account.

Download (9 MB)

OnyX 1.5.3 for Mac OS X Panther 10.3

Requirements: Mac computer running Mac OS X Panther 10.3 with BSD subsystem. OnyX only runs from an administrator account.

Download (2.9 MB)

OnyX 1.3.1 for Mac OS X Jaguar 10.2

Requirements: Mac computer running Mac OS X Jaguar 10.2 with BSD subsystem. OnyX only runs from an administrator account.

Download (1.2 MB)