Vivaldi is a freeware, cross-platform web browser developed by Vivaldi Technologies, a company founded by Tatsuki Tomita and Jon Stephenson von Tetzchner, who was the co-founder and CEO of Opera Software. Vivaldi was officially launched on April 6, 2016.[10][11]
Although intended for general users, it is first and foremost targeted towards technically-inclined users as well as former Opera users disgruntled by its transition from the Presto layout engine to a Chromium-based browser that resulted in the loss of many of its iconic features.[10][12] Despite also being Chromium-based, Vivaldi aims to revive the features of the Presto-based Opera with its own proprietary modifications.[13][14] - https://en.wikipedia.org/wiki/Vivaldi_(web_browser)