In last Saturday's post on escaping Google I listed alternatives recommended by others.
I gave DuckDuckGo a try this past week, but it simply didn't turn up the quality of results Google does. I have since switched to Yahoo! for searching, and its results seem equal to Google's.
I have also been looking at Zoho to replace things like Gmail and Google Docs. Zoho really offers quite a bit of useful stuff. I suspect the usefulness of Zoho as a collaboration tool would depend on getting others to use it as well; most people already have a Gmail account, so it's simpler to just use Google's services.