Vivaldi is a freeware, cross-platform web browser developed by Vivaldi Technologies, a company founded by Opera Software co-founder and former CEO Jon Stephenson von Tetzchner and Tatsuki Tomita. It was officially launched on April 6, 2016.Vivaldi has a minimalistic user interface with basic icons and fonts, and, optionally, a color scheme that changes based on the background and design of the web page being visited. The browser also allows users to customize the appearance of UI elements such as background color, overall theme, address bar and tab positioning, and start pages.
Vivaldi features the ability to "stack" and "tile" tabs, annotate web pages, and add notes to bookmarks. Furthermore, users can place digital bookmarks on a "speed dial" page for quick access and harness "quick commands" to search bookmarks, browsing history, open tabs, and settings.Vivaldi is built around and based on web technologies such as HTML5, Node.js, React.js, and numerous NPM modules. As of Technical Preview 4, Vivaldi also supports numerous mouse gestures for actions like tab switching and keyboard activation. Vivaldi can also be set to a "Chromeless UI", which gives users more screen real-estate and the ability to focus on a single page without distractions. To accommodate users who prefer to use a large number of tabs at the same time, Vivaldi supports hibernation for both individual tabs and for tab stacks, freeing resources while the user does not actively use those tabs.
