CCleaner vs. Comodo System Cleaner
Tried: CCleaner, Comodo System Cleaner. Yes, everyone knows unused files and registry entries are increasing as you use Windows for a longer time. In fact, CCleaner is actually Crap Cleaner. There are many system cleaners/optimizers around in the net; the reason I chose these two softwares is they are almost fool-proof. It means you can just follow the instructions and clean the system without causing system errors. CCleaner removes unwanted files and registry entries in Windows system in a safe way. I have been using CCleaner for quite a while now and it is not causing me any problem.