Onyx is a powerful system utility and optimization tool for Mac OS X. It provides a comprehensive set of tools for maintaining, optimizing, and customizing your Mac. Onyx can be used to verify the startup disk and the structure of its system files, to run miscellaneous tasks of system maintenance, to configure some hidden parameters of many of the applications, to delete caches, to remove certain problematic folders and files, to rebuild various databases and indexes, and to perform other functions. Onyx also offers a wide array of customization options for the Dock, Finder, Safari, and some of Apple's applications.
Discontinued Discontinued but still available on download sites: http://www.majorgeeks.com/files/details/toolwiz_care.html
Discontinued official web site / application not available.
Bundleware: the software tries to install Avast too: Spyware, runs in the background and collects information to send to Avast. Background mode can be disabled, but is re-enabled on every run: occasionally displays pop-up ads system-wide