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I was wondering what the opinions are for CCleaner for Mac? Do I really need it?

I don't find it that useful really. It checks permissions and a couple of cleaning utilities, but I don't use it myself. I'm waiting for the release of Onyx for Mavericks which should be out in the next few days or so...A better range of tools and options if you want to get under the hood.
 
I find it helpful to clean up wasted hard drive space in one swoop. Its a holdover from my time as a windows user. I actually had to help my roommate out, his computer is just filled with bs programs that downloaded on to his system and installed on there own. I had no idea windows had become such a nightmare in regards to just scammy programs, apps and toolbars that do nothing.

Anyway, his comp runs like new after using ccleaner and avast
 
I was wondering what the opinions are for CCleaner for Mac? Do I really need it?
You don't need "cleaner" or "maintenance" apps to keep your Mac running well, and some of these apps can do more harm than good. Most only remove files/folders or unused languages or architectures, which does nothing more than free up some drive space, with the risk of deleting something important in the process.
These apps will not make your Mac run faster or more efficiently, since having stuff stored on a drive does not impact performance, unless you're running out of drive space. In fact, deleting some caches can hurt performance, rather than help it, since more system resources are used and performance suffers while each cache is being rebuilt.
Many of these tasks should only be done selectively to troubleshoot specific problems, not en masse as routine maintenance. OS X does a good job of taking care of itself, without the need for 3rd party software. Among other things, it has its own maintenance scripts that run silently in the background on a daily, weekly and monthly basis, without user intervention.
 
For some cases

I was wondering what the opinions are for CCleaner for Mac? Do I really need it?

I've used tools to clean out other language files than the ones I need, which saves a few GB of storage, which is pretty useful if you're on a small SSD.

However, I wouldn't recommend it for Mavericks yet, unless you're sure the software you're using is compatible. I've experienced logo icons and other needed stuff being deleted automatically this way.
 
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