OnyX 2.9.4

Keep your Mac running at top performance with this must have utility.

Keeping any PC – regardless of OS – isn't always an easy task. Keeping your computer running the way you want it, with all of your wanted and needed startup options, extensions and TSR's can often create a number of challenges that will require some serious tweaking to get right.  That's why applications like OnyX are so important. Its an app for your Mac that helps you keep it running at peak performance.

OnyX is a Mac maintenance, optimization, and personalization utility for OS X. It allows you to run miscellaneous system maintenance tasks to configure hidden parameters for Finder, the Dock, Safari, Dashboard, Exposé, and Disk Utility plus many more.  You can use it to delete cache, to remove a certain number of problematic files and folders, to see the detailed info of your Mac's configuration, to preview the different logs and CrashReporter reports, and much, much more.

Some of the tool's best functionality can be found in the Utilities module.  Clicking on the Utilities icon in the dock brings up the Utilities page.  From here, you can find information on manual OS commands, change visibility preferences, remove AppleDouble files and much more.

App Pro’s: FREE

App Con’s: Versions are OS dependent. OS updates often necessitate an app version update as well

Conclusion: OnyX is a GREAT app, and one that everyone with a Mac should have. However, it is a bit daunting.  The information and options it works with and reveals are really meant for the more technically savvy user, and not necessarily for those more casual Mac users. OnyX is very powerful and "with great power comes great responsibility."  You need to be careful when using it. You can very easily make a number of unintended mistakes if you don't use it right, so a bit of caution is warranted. However, it’s a great app, and can be a bit help when, for instance, you get an error that a file can't be deleted or removed from the Trash because its "in use."  Its during instances like that when OnyX can truly save your bacon.