Rated 4 out of 5 stars
In FF14 and before was 5 star. Light and a lot of options. Load tabs right of current, close last active tab or left tab. Can load new tabs in a Right to Left order, but can also do Left to Right. Best part is tab appearance customization. I can have all looked at tabs normal, not looked at dark, and selected Highlighted.
Bug, In FF15 tabs are loading at start mirrored from how they were last time. So all my tabs get flipped, then when open FF again it flips them again. Disabled this plugin and they loaded in the order I left them. Please fix, using Tab Control now and I miss my custom tab appearances.