I tried it on a virtual Windows 10 x64, no mess during the installation.
I found this software very useful, it gives a very fast access to services, and it does good optimizations.
So far, it’s a must-have imho.
And it is multilanguage, the french is very well translated and I like that.
I’ll install it too on my Seven x64, I’m tired of useless services which are slowing down my machine.