Like all search engines, Google uses a special algorithm to generate search results. While Google shares general facts about its algorithm, the specifics are a company secret. This helps Google remain competitive with other search engines on the Web and reduces the chance of someone finding out how to abuse the system.
Bing is a web search engine owned and operated by Microsoft. The service has its origins in Microsoft's previous search engines: MSN Search, Windows Live Search and later Live Search. Bing provides a variety of search services, including web, video, image and map search products. It is developed using ASP.NET.
Wolfram Alpha is a computational search engine (sometimes referred to as an "answer engine"). The interface looks similar to that of a regular search engine but queries typed into the search box result answers to specific questions rather than listings of websites that may be relevant to the query.
Yandex is the leading search engine in Russia (by blended market share), and due to recent legal changes (Google got slapped in Russian courts), they’ve also closed the gap on mobile. More than just a search engine, Yandex also provide a browser (YaBrowser), email, news, maps, paid advertising, and translator services to the Russian market, as well as in Belarus, Kazakhstan, the Ukraine, and Turkey.
Ixquick had long declared on its sites, that it operated in compliance with European Union privacy standards, and it retains its original European search engine. As of 21 April 2018, ixquick.eu also redirects to startpage.com. Search mechanism and interface. Ixquick returns the top ten results from multiple search engines.