The applications are available, but they will be not updated anymore.

The development of the old versions is discontinued. Download (6.3 MB) Release Notes OnyX for macOS Monterey 12 will be available about 15 days after the official release of macOS Monterey. Requirements: Intel-based Mac or Mac with Apple silicon using macOS Big Sur 11.3 or later. Use the correct version, and don't try to use a version intended for an earlier operating system.

There is a specific version of OnyX for each major version of the operating system. Download AppCleaner for Mac MacUpdate image. 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. App Cleaner & Uninstaller Pro 7.1 for Mac OS X Free Download.

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.

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