Vivaldi Technologies revealed a moment ago that the search engine DuckDuckGo is the new default search engine in private windows, and that users may set a different search engine for the browser's private browsing mode.
The cooperation with DuckDuckGo was announced on the official Vivaldi blog and it comes along with a new setting in Vivaldi to set a different search engine for the browser's private browsing mode.
All modern web browsers support private browsing. The feature has different names depending on the browser but the general functionality is more or less identical: browsers save less data in private browsing mode.
The Vivaldi web browser does not record visited pages in the browsing history, and does not save cookies or temporary files either.
Vivaldi and DuckDuckGo
Vivaldi users can open private windows either with a click on Vivaldi icon > File > New Private Window, or by using the keyboard shortcut Ctrl-Shift-N (Mac users Command-Shift-N).
Vivaldi opens a new window and an intro on first launch. The introduction reveals information about private windows in the browser and reveals that DuckDuckGo is the default search engine in the mode.