[FussyZeus]

Check out Alfred. I use the free version myself, you can un-assign command space from Spotlight in OS X first, then assign Command Space to that. It does basically the same thing minus the Internet connected stuff like location searching and whatnot.

Alfred can be setup to index folders, contents of text files, pictures, etc. and harder things like System Prefs screens too.

I myself keep Spotlight on Command Shift Space for the rare occasions when I want to take advantage of the Internet connected stuff, but keep using Alfred for everything else (less to do with privacy, more because Alfred is just quicker.)