As you may know, Vivaldi is a Chromium-based open-source internet browser, built by the Opera founder.

Main features of Vivaldi:
- speed dial which allows access to favorite websites in each new tab and permits organizing favorite websites into folders,
- the browser supports quick text commands;
- built-in notes taking tool;
- side panel with fast access to bookmarks, downloads and notes;
- custom search engines support;
- allows side-by-side browsing using a side panel;
- tab management:
- session management;
- allows previewing open tabs;
- tab cycling;
- tab stacks (you can drop a tab on top of another to create a stack);
- restore closed tabs or blocked pop-ups from the Vivaldi trash can;
- tab stack tiling (view stacked tabs in a grid or side-by-side);
- mouse gestures and keyboard shortcuts;
- user interface scaling;
- adaptive interface color;
The latest version available is Vivaldi 2.2, which has been released a while ago.
Installation instructions:
The easiest way to install Vivaldi on Ubuntu 18.10 Cosmic Cuttlefish, Ubuntu 18.04 Bionic Beaver, Linux Mint 19.x, Elementary OS 0.5 Juno and other Ubuntu derivative systems is too use the default Opera repository. You need to manually add the repository, download and install the key, update the repo index and install the vivaldi-stable package:
$ sudo add-apt-repository “deb [arch=i386,amd64] http://repo.vivaldi.com/stable/deb stable main”
$ wget –q0- http://repo.vivaldi.com/stable/linux_signing_key.pub | sudo apt-key add –
$ sudo apt-get update
$ sudo apt-get install Vivaldi-stable
Optional, to remove Vivaldi, do:
$ sudo apt-get remove vivaldi*