Review for User Agent Switcher by uz1012
Rated 4 out of 5 stars
The developer posted a comment in 2013 saying an update was coming in early 2014, but it never did. There are basic features, like the ability to set a default user agent and have it be persistent, that would be nice. The list of user agents is maintained by another person.
It seems the developer of this addon is either too busy or has lost interest.
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