ivaldi is a web browser built on Chromium that includes all of your standard Internet browser features with a few extras.
The Vivaldi web browser is aimed at advanced users, especially those looking for the features which were retired with the old Opera web browser before it become a fork of Chromium
One thing about Vivaldi worth noting is its very different user interface. Though it contains all of the typical features and general layout of other browsers like Google Chrome or even Firefox, Vivaldi has a different color scheme which can be fully customized.
Apart from the different design of Vivaldi, it also as a feature which can organize tabs into stacks. For example, if you have 3 or 4 pages open in Facebook, you can group these tabs together as to not clutter up the screen. You can also click the “Trash” icon and see recently closed tabs.