Do you know that Firefox now have a new technology that simplify thedevelopment of an extension? And also use and extend the API of Chrome? Yea, Iam serious you can do an extension for both the browsers! WebExtension are the future for addons in Firefox but this is not enoughbecause they works also on Chrome, Opera and soon Edge without any changes! Think about it, the cross browser addon issues are only an old nightmare! Inconclusion because all this amazing news and how it is easy to extend Firefoxwill be available new APIs to customize the the Firefox experience in thisyear.