I have been using this addon for quite sometime now, and love it so so much. I would be totally lost in all the sea of tabs I keep opening without this.

It has almost everything needed to manage hundreds and even thousands of tabs. The one other thing I would love to see is an indicator showing which tabs are currently playing audio, kinda like with the native firefox drop down list of tabs. Still, an amazingly feature rich and useful addon. Thank you so much.