There are lots of free registry cleaner software, anybody can introduce me a powerful one?

I google free registry cleaner software online, and massy results come back to me. It is really hard to know which one is better. Here I wonder if anybody can introduce me a powerful one. CCleaner is perfect but seems have shorts on spyware removal function. I do not like antivirus in real time, because of a huge... show more I google free registry cleaner software online, and massy results come back to me. It is really hard to know which one is better.
Here I wonder if anybody can introduce me a powerful one. CCleaner is perfect but seems have shorts on spyware removal function.
I do not like antivirus in real time, because of a huge computer resource would be used while antivirus running. so i want a cleaner with antispyware function or, anti-trojan function integrated.
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