The first school is, ‘You don’t need all that stuff to keep your Mac running well.’ The second school is, ‘My Windows PC needed those utilities, so my Mac must need ’em, too.’ The two types of apps which massage each school of thought are the free but almost obscure utilities, and the highly advertised utilities.
If you go the free route than I’ll recommend Onyx, Deeper, and Maintenance, a trio of related apps (choose the one that works best for your needs) which clean, repair, customize, and unlock a bunch of hidden features in OS X.
Or, you can succumb to the online advertising for utilities similar to Magican, a veritable Swiss Army Knife of functionality which promises to optimize, clean, and secure your Mac. For a price.
I’ll admit that Magican’s ease-of-use is substantially better than Onyx, Deeper, Maintenance, or most other utilities. Click and Magican scans your Mac for useless files from caches, to language, to viruses and trojans.
All you need to know about Magican resides in the lefthand Sidebar. Home gives you a simple Quick Scan option. After that, each function is listed in a Sidebar category.
Click on each Sidebar menu option to reveal more detailed options. The righthand Sidebar displays status details for each function.
Overall, Magican is decent but has plenty of features not really necessary to clean Mac living. Scanning logs, removing caches, and so on may save space but doesn’t do much to improve performance or security.
The Stats Monitor is rather nice, though, and the floating data windows are handy to monitor your Mac’s performance in real time with an attractive visual. Of the heavily advertised Mac utilities, I prefer Magican to the even more heavy handed, and heavily advertised MacKeeper.