Ad-free search engine

There are at least 10 alternative search engines to Google, each with a different emphasis, such as better privacy, or non-linear displays, or long-tail results. Recently I’ve been using Neeva as my default search app. (It has a Chrome extension that makes it the default in the browser.) It offers a different business model: a subscription without ads. So unlike Google these days, I get only answers and no long list of camouflaged ads to skim over. I would say the answers are comparable to Google so far. Right now Neeva is free, but will be about $5/month once out of beta. I will be happy to pay for it, or until Google offers a ad-free subscription option. — KK