Vivaldi
Vivaldi is a new, feature rich web browser that combines an Opera-like interface with a Chromium open-source platform.
Vivaldi is very similar to the Opera browser in many ways. There are some pretty cool features which are nice, such as the interface, which fades colours to match the dominant colour on the page as you navigate between sites.
Aside from the snazzy effects, the browser has clearly been designed with power users in mind, as the Quick Commands tool shows. This helps the user to search or run commands in much the similar manner to OS X’s Spotlight feature