I’ve tried to search for Spotlight counterpart for Windows, but end up the result wasn’t meet what I want, and I’ve came across with Everything , they are kind enough to provide free search tools as well as SDK.
I’ve play with it for a while and find it performs quite well, the speed and decent accuracy compared with those I tested last time. But unfortunately, the SDK required the application itself to works, but they claimed that they going to release a SDK that works without installing the application.
A Spotlight skin with Everything’s SDK, it could be nice.