Start page says that it is “enhanced by google”.
I've mostly switched from Google to StartPage.
This description is provided on StartPage.com:
Startpage offers you Web search results from Google in complete privacy!When you search with Startpage, we remove all identifying information from your query and submit it anonymously to Google ourselves. We get the results and return them to you in total privacy.
Your IP address is never recorded, your visit is not logged, and no tracking cookies are placed on your browser. When it comes to protecting your privacy, Startpage runs the tightest ship on the Internet. Our outstanding privacy policy and thoughtful engineering give you great search results in total anonymity. Here are some of our key features:
Free proxy surfing available.
Praised by privacy experts worldwide.
Fourteen-year company track record.
Third-party certified.No IP address recorded.
No record is made of your searches.
No identifying or tracking cookies used.
Connection using powerful SSL encryption.To learn more, check out our privacy page and read our privacy policy. We're confident you'll like what you see.