Great to know that the Mac version is also out there in the market but most of the companies like mackeeper, ontrack, already do have such a software it will be really difficult for the ccleaner to get there market I forgot to mention one name stellar phoenix speed up Mac also in to the market since a long time. I will definitely check the beta version of the software
I love CCleaner for the PC (except that they come out with a new version every 20 seconds or so (or maybe it just seems that way)...they need to introduce a completely automated updating scheme so you don't have to download and install it yourself every 20 seconds if you want to stay current).
When the OS X version hits 1.0 I'll jump on board and try it.
I have been using CCLeaner of Mac for a few months now. I am very happy with it thus far. In fact, even though a beta, it has performed as well as the PC product that I have used for years. Great essential tool for any user.