Opera (web browser) layout engine of its competitor Google Chrome. Features of the Opera web browser include private browsing, tabbed browsing, download manager, mouse gestures and browser extensions. Opera began in 1994 as a research project at Telenor, the largest Norwegian telecommunications company. In 1995, it branched out into a separate company named Opera Software. Opera was first released publicly in 1996 with version 2.10, which only ran on Microsoft Windows. In an attempt to capitalize on the emerging market for Internet-connected handheld devices, a project to port Opera to mobile device platforms was started in 1998. Opera 4.0, released in 2000, included
Vivaldi (web browser) 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