At Mozilla, we work hard to make Firefox the best browser for you. That’s why we're always focused on building a browser that empowers you to choose your own path, that gives you the freedom to explore without worry or compromises. We’re excited to share more about the updates and improvements we ha...
The issue is that because they broke the UI customization that allowed for it all the extensions are just a kludge to add a panel to the side without actually getting rid of the top tabs.
Sidebery is a very good implementation of the vertical tab panel
The issue is that because they broke the UI customization that allowed for it all the extensions are just a kludge to add a panel to the side without actually getting rid of the top tabs.