DuckDuckGo
（原始內容存檔于2019-04-21）. Privacy-focused search engine DuckDuckGo wants to keep you safe around the web. The Verge. [2018-11-12]. （原始內容存檔于2018-11-13）.
SORRY
找不到關於 GoSafe 的資料
天空傳媒(股)公司版權所有
（原始內容存檔于2019-04-21）. Privacy-focused search engine DuckDuckGo wants to keep you safe around the web. The Verge. [2018-11-12]. （原始內容存檔于2018-11-13）.
天空傳媒(股)公司版權所有