https://addons.opera.com/fr-ca/extensions/details/navvatart-vertabs/
Navvatart VerTabs extension - Plugiciels Opera
Modern vertical tab manager with multi-group support, drag and drop, and smooth animations. By Navvatart
extensionopera
https://addons.opera.com/da/extensions/details/navvatart-vertabs/
Udvidelsen Navvatart VerTabs - Opera add-ons
Modern vertical tab manager with multi-group support, drag and drop, and smooth animations. By Navvatart
operaaddons