|User since||March 5, 2015|
|Number of add-ons developed||0 add-ons|
|Average rating of developer's add-ons||Not yet rated|
This alternative actually works Rated 1 out of 5 stars
I've been a long-time user of Multirow Bookmarks Toolbar Plus, but it seems the developer has abandoned it. The "Plus" version is supposed to be the latest, but that doesn't work anymore either.
Like others, I can no longer add new bookmarks or rearrange existing one directly with the toolbar. I've tried, as the developer had once suggested, to first delete the older version before installing the new one. It seemed to worm momentarily, but then the problem returned.
Fortunately, I found this alternative that works well with the latest Firefox (on both PC and Mac):