From wikipedia: "DuckDuckGo's results are a compilation of "over 400" sources, including Yahoo! Search BOSS, Wolfram Alpha, Bing, Yandex, its own Web crawler (

From wikipedia: "DuckDuckGo's results are a compilation of "over 400" sources, including Yahoo! Search BOSS, Wolfram Alpha, Bing, Yandex, its own Web crawler (the DuckDuckBot) and others. It also uses data from crowdsourced sites, including Wikipedia, to populate knowledge panel boxes to the right of the results." https://en.wikipedia.org/wiki/DuckDuckGo https://en.wikipedia.org/wiki/DuckDuckGo