Wow!! This is a shock. Rated 5 out of 5 stars
Guys, this is the most incredibly overlooked gem on the Firefox planet!
I was already happy to discover the light version a few weeks ago, but I just found out and tested the latest version: it's a life saver for researchers.
why isn't it at the top of the list? Compared to the thousands of (nice) little tools we find on add-ons, this is simply the mother of all FF extensions. I don't know how I can have missed it for so long.