Wolfram Alpha, a new "Computational Knowledge Engine" developed by British physicist Stephen Wolfram, is all set to revolutionize search with its amazing/innovative ability to give answers to your questions directly - instead of directing you to sources where you "might" get the required information.
Wolfram Alpha is not a Google Killer, though, because frankly Google doesn't really have anything like itexcept for maybe Google's new public data search, which, while impressive, doesn't look nearly as robust as Wolfram Alpha. (Then again, we'll have to wait and see how well Wolfram Alpha works when it gets in the hands of the public.) Either way, Google will still corner the market on most normal search. (We're not always looking for the kind of answers Wolfram Alpha provides when we hit up Google.) As for how this editor uses Google and Wikipedia, I'd actually imagine that Wolfram Alpha could be more of a Wikipedia competitor than a Google competitor.