Rated 5 out of 5 stars

Go to https://addons.mozilla.org/es-es/firefox/addon/back-forward-separate/ for an up to date and working clon of NOUN Buttons . It even forks on Firefox 8 Nighly :) My five stars for this developer, not for Gulp21

This review is for a previous version of the add-on (1.1.4).  This user has a previous review of this add-on.