Vivaldi is introducing two-level tabs — and I want it in every browser

Vivaldi browser has had a unique approach to tab management. Over the years, it has introduced features such as stacking, muting, and pinning tabs; it also lets you view two tabs in a split-screen mode in one window. The brainchild of Opera co-founder Jon von Tetzchner is getting a hot new feature with Vivaldi’s latest […]