Rated 5 out of 5 stars

Από τον/την Gav83 στις Ιαν. 31, 2011 · μόνιμος σύνδεσμος

Does exactly what it say on the tin.
Import this xml list:
http://techpatterns.com/downloads/firefox/useragentswitcher.xml
Full a full list of user agents for browsers, apps, mobile devices etc.