Rated 5 out of 5 stars

This adds a very useful suite of security tools and features, and is one of the reasons I use Firefox to authenticate sites I use.

Unless the author can find another way to display the info, this addon will not be usable after November.

The Addon Bar restorer is now broken since FF v55.
You can add the bar again with "Classic Theme Restorer"
https://addons.mozilla.org/firefox/addon/classicthemerestorer/