A "must have" for me! Rated 5 out of 5 stars

I am so spoiled by this extension that I have a very hard time using any other browser besides Firefox. I even have a difficult time using Firefox on another computer if it doesn't have this extension installed.

It does work with FF3.0b3 if you install this version: http://saber.kawaii-shoujo.net/Various/tab_mix_plus-0.3.6.0.071228.xpi

The only complaint I have with this extension is that occasionally the session manager loses my tabs. Happens rarely, but nevertheless, does happen.

Kudos to the extension creator.

This review is for a previous version of the add-on (0.3.6).