You could choose any extension from the extension store
You can still more or less do this if you create an add-on collection and add all your extension to it. In order to register this collection with Firefox you then have to enable the Debug Mode by clicking the firefox logo in firefox’s about section 5 times.
It may be possible that you need Firefox Beta or Fennec for this to work
You can still more or less do this if you create an add-on collection and add all your extension to it. In order to register this collection with Firefox you then have to enable the Debug Mode by clicking the firefox logo in firefox’s about section 5 times.
It may be possible that you need Firefox Beta or Fennec for this to work