Vivaldi browser uses DuckDuckGo search engine in private windows Technology Vivaldi browser uses DuckDuckGo search engine in private windows Do Son March 24, 2018 In 2016, Opera co-founder Jon von Tetzchner launched Vivaldi, the desktop browser app. The desktop browser Vivaldi has won... Read More Read more about Vivaldi browser uses DuckDuckGo search engine in private windows
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