Google is undeniably the biggest player as far as search engines are concerned. However, if you want to try various other browsers, you can have a look at some decent options. If privacy is your major concern, search engines like StartPage, DuckDuckGo, Swisscows, etc. are Reliable options. And, if you want to use a search engine for doing business in a specific location, you can try Baidu and Yandex.