Vivaldi began as a virtual community website that replaced My Opera, which was shut down by Opera Software in March 2014.Jon Stephenson von Tetzchner was angered by this decision because he believed that this community helped make the Operaweb browser what it was. Tetzchner then launched the Vivaldi Community—a virtual community focused on providing registered users with a discussion forum, blogging service, and numerous other practical web services—to make up for My Opera's closure. Later, on January 27, 2015, Vivaldi Technologies launched—with the community in mind—the first technical preview of the Vivaldi web browser. Its name comes from the Italian composer Antonio Vivaldi, which, according to one of its creators, is an easy name to be remembered and understood worldwide.
Vivaldi has a minimalistic user interface with basic icons and fonts, and 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. According to CEO Jon von Tetzchner, Vivaldi's vast, unique customizability is a huge part of how the browser caters to power users.
Vivaldi 1.8.770.56 with multiple pinned tabs, regular tabs and tab stacks, open history side panel, new tab with multiple speed dial folders and websites and highlighted "Toggle Extension Visibility" button
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.
Vivaldi Technologies is planning to release a service called "Vivaldi Sync," which will allow users to synchronize their bookmarks, history, passwords and settings across different computers. Also, the company hopes to integrate the email client "M3" into a future version of Vivaldi. The developers are planning to release their own extension platform for Vivaldi.
Ars Technica reviewer Scott Gilbertson wrote about version 1.0 in April 2016. He praised its innovative features, such as its tab handling, while noting that it will most likely remain a niche browser and not see widespread uptake.
^"Vivaldi End User License Agreement". vivaldi.com. Vivaldi Technologies. 18 November 2016. Subject to the terms and conditions herein, Vivaldi hereby grants You a limited, non-exclusive, non-transferable, non-sublicensable license to install and use the Software and Services for its intended purpose. [...] Without limiting the foregoing, you are neither allowed to (a) adapt, alter, translate, embed into any other product or otherwise create derivative works of, or otherwise modify the Software ; (b) separate the component programs of the Software for use on different computers; (c) reverse engineer, decompile, disassemble or otherwise attempt to derive the source code for the Software, except as permitted by applicable law; or (d) remove, alter or obscure any proprietary notices on the Software or the applicable documentation therein.
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