Onyx is now available for macOS 10.15 Catalina. If you’re not familiar with the tool, OnyX is a multifunction utility that you can use to verify the structure of the system files,
Onyx also allows you to run miscellaneous maintenance and cleaning tasks, to configure parameters in the Finder, Dock, Safari, and some of Apple’s applications, to delete caches, to remove certain problematic folders and files, to rebuild various databases and indexes, and more.
Download Onyx here.