Vertical tabs in Firefox: Yes, it’s really possible!

or a certain kind of power user, Firefox’s lack of vertical tab support might seem like a . Vertical tabs are a great way to manage dozens of browser tabs in a single window. At the expense of some horizontal page real estate—which most websites don’t use anyway—each tab remains the same size, so you never lose sight of page titles. And if you open more tabs than your screen can accommodate, it’s easy to scroll