The add-on Tip Tab [1] has a view to show all tabs of all windows, and let you use the TAB key to cycle through all of them, with the RETURN key to activate the

The add-on Tip Tab [1] has a view to show all tabs of all windows, and let you use the TAB key to cycle through all of them, with the RETURN key to activate the current tab. So you can have multiple windows open with different sizes at different locations of the screen, and still be able to cycle through them. Not sure whether that would help. [1] https://addons.mozilla.org/en-US/firefox/addon/tip-tab/ https://addons.mozilla.org/en-US/firefox/addon/tip-tab/. (shameless plug for my add-on)