UPDATED: This extension is the best replacement for "DownloadThemAll!" that I have found and works very well.
However, I hate that the toolbar icon is a red arrow! It distracts from the minimalist, black and white aesthetic of the default Firefox UI. I real.y resent it when developers, out of pure ego, create extension icons that violate the carefully crafted user experience of Firefox, which is supposed to get out of your way so you can enjoy browsing the web. Its just in really bad taste. If you move the distracting red icon to the "More tools ..." overflow menu, it will not work properly because its UI does not fit within the menu. I hope the developers will fix this. I have altered them to the problem but the icon is still red after many months so I have updated my review from 4 to 3 out of 5 stars.