The best alternative search engine to Google is Bing. Bing’s search engine share is between 2.55% and 12.61%.
Bing is Microsoft’s attempt to challenge Google in search, but despite their efforts, they still did not manage to convince users that their search engine can be as reliable as Google.
Their search engine market share is constantly below 6%, even though Bing is the default search engine on Windows PCs.
Bing originated from Microsoft’s previous search engines (MSN Search, Windows Live Search, Live Search), and according to Alexa rank is the #30 most visited website on the Internet.