Collections by Noitidart
Try Out Sometime by Noitidart
Extensions I came across that look useful and I should try out sometime.
FF Addon Dev by Noitidart
Tools I use for developing Firefox addons. For desktop, I haven't explored mobile addons yet.
Create a New Collection
Collections make it easy to keep track of favorite add-ons and share your perfectly customized browser with others.
Create a CollectionTo create your own collections, you must have a Mozilla Add-ons account.