Rated 5 out of 5 stars
Works like a charm ;) no more searching in the about:config, great work!
But it lacks a button on the toolbar or somewhere...
Other thing, when options window is open, one should be able to scroll the installed add-ons tab, to check which ones are still installed (in my case i have quite a few installed and don't always remember their names)
Also, there are some entries in the list that don't relate to any of the add-ons (installed or uninstalled) but i guess that as to do with the add-on itself and not this extension.
Keep it up