I've been using Vertical Tabs since ~ 15 years and consider myself a power user. Here's what I think is extremely useful:Hierarchy Tabs like in TST (https://addons.mozilla.org/en-US/firefox/addon/tree-style-tab/)Mousewheel Switches Tabs (https://addo...
Thanks for the reply. What I really don't understand is why Firefox changed from `about:blank` to `about:newtab`. The former allows extensions to work, the latter doesn't (while not providing anything useful).Using Mouse Gestures is a super boost in ...