Mozilla Connect

The bookmarks toolbar button might work for you.

There's a small space to the right of the address bar (right of the Bookmark this page button, if you have that button).

There's a toolbar button "List all tabs" you can use. Get it from "Customize toolbar..." if you don't already see it on your toolbar.

Someone posted an "idea" for this! Add your Kudos.https://connect.mozilla.org/t5/ideas/vertical-tabs-and-sidebar-inception/idi-p/89738#feedback-success

I want this, too. Vertical tab space is limited. Sidebar buttons take up too much space, especially when I don't use sidebars.I agree that the simplest way is to show/hide for extension sidebars like the History and Bookmarks sidebars in "Configure S...