Easy and decent User-Agent switcher. But missing an overview function for the exceptions / overrides i make for the many domains i visit. Now it is only possible to view/add/change an override if you are on the specific website.
An other thing which can be improved is the user agent set. After installing this addon i did not notice any updates (like version number increments) on the set of user agent strings, you have to do this yourself. [i was wrong, there are some weekly/monthly updates]
But the Firefox user agent is not correct: "Mozilla/5.0 (X11; Linux x86_64; rv:115.0) Gecko/20100101 Firefox/115.0" should be "Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/115.0" see the rv:109.0 reference.
Beside that, working great!