New Tab Position Toggle 0.4
Use a different position for a new tab on using a customized mouse click (next instead of last or last instead of next) compared to default behavior. Mouse button and modifier keys like Alt, Ctrl, Option, and Shift can be chosen. Handy for laptops.
This add-on has been preliminarily reviewed by Mozilla. Learn more
This add-on is not compatible with your version of Firefox because of the following: