Top right of my tab bar in firefox, there is a little down pointing arrow. I click that: BOOM vertical tabs. Now make it an optional fixed thingie and let me stack them. I may be missing something here, but that sounds like something an experience Firefox dev can implement in half an hour.
Top right of my tab bar in firefox, there is a little down pointing arrow. I click that: BOOM vertical tabs. Now make it an optional fixed thingie and let me stack them. I may be missing something here, but that sounds like something an experience Firefox dev can implement in half an hour.