My favourite extension after upgrading to 29.0. Reclaim your Title Bar. Rated 5 out of 5 stars
Brilliant plugin to maintain a sane user interface. For some bizarre reason firefox 29+ on Mac OSX places all the tabs into the "Title" making it very difficult to move windows around when working with multiple windows and lots of tabs.
Also the round style tabs are hard to read.
This extension solves both these problems and offers a whole bunch of other neat feature.
Awesome jobs and big thank you to the developers.