Pinned Tab Duplicator
Automatically clones all your pinned tabs to every new Firefox window you create, with optimized loading. (In my opinion this feature should have been a built-in Fx feature already since a long time)
1 User
Automatically clones all your pinned tabs to every new Firefox window you create, with optimized loading. (In my opinion this feature should have been a built-in Fx feature already since a long time)