There are many users that enjoy the power, control, and flexibility that Firefox brings.
I found a small and simple extension that, although it cannot be considered indispensable in any way, is quite obvious. And for us that have a wide screen, makes our monitor gain some vertical space. It is called Vertigo, playing on the idea of VERTical, as you will see. What it does is just move the tabs row at the top of the browsing window, and convert them to vertical tabs on a column on the left. Let it be said that it can be altered to display in the right hand side too. Install it… you can’t go wrong. And if I did, by suggesting it, you are only an uninstall away from not having lost anything by trying.