The new browser is available for Windows, Mac and Linux as a free download, but it’s still yet in the tech preview form. It’s pretty interesting what’s the story behind this browser, as it seems that the team behind Vivaldi doesn’t agree with the current state of Opera’s evolvment, saying the following: Vivaldi comes with features borrowed from Opera, such as mouse gestures for browsing and the familiar “speed dial” interface that shows your favorite tabs when you open a new tab page. But it gets some unique options, as well, such as the possibility to combine multiple tabs into one for easy browsing of related sites. And if you ask me, this is a pretty neat feature that I have always been looking for. Quick Commands allow you to quickly search through various settings, history, open tabs, bookmarks and more with a single keyboard shortcut. We aim to make the Quick Command menu highly customisable, allowing you to make your own commands and run them quickly. It also allows you to take notes right in the browser, along with screenshots, which is something that’s similar to what Microsoft showcased on Project Spartan. Vivaldi is using the Chromium (Blink) rendering engine that’s found in Chrome, however, the browser is built using modern web technologies such as React, Node.js and a number of Node modules. The team plans to add sync, mail support, better performance and extensions once the official version gets released.