Rated 5 out of 5 stars

Fantastic add-on. An incredible amount of work went into this, and it shows. However I prefer more traditional functionality. I made an alternative add-on called Side Tabs. Visually it was inspired by Chrome 15's side tabs. Take a look at:

This review is for a previous version of the add-on (0.13.2011121501.1-signed).  This user has 2 previous reviews of this add-on.