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User Agent Switcher
Adds a menu and a toolbar button to switch the user agent of the browser...
Cornfed SIP User Agent
Cornfed SIP User Agent is a SIP Softphone....
Custom User-Agent String
Set custom a User-Agent string for your Mozilla Firefox web browser with this restartless add-on...
User-Agent JS Fixer
This restartless add-on for Firefox extends the functionality of User-Agent add-ons...
JavaScript User-Agent fixer modify User-Agent User-Agent JavaScript
User Agent Switcher for Firefox
Adds a menu and a toolbar button to switch the user agent of the browser...
User Agent Changer for Firefox
Adds a menu and a toolbar button to change the user agent of a browser...
User Agent Quick Switch
Easily and quickly switch the Firefox User Agent with this restartless add-on...
Display Mail User Agent
Displays icon for user agent of received mails...
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Display Mail User Agent for Thunderbird
Displays icon for user agent of received mails...
X-Forwarded-For Header
This Firefox add-on implements a X-Forwarded-For field into the HTTP header...
Header Spy
An extension which shows HTTP headers on statusbar....
Header Monitor
Header Monitor is a Firefox extension adds a statusbar with HTTP response header monitor....
Header Tool
Using this tool you can easy modify header on each HTTP call on the Mozilla Firefox...
FLV::Header
FLV::Header is a flash video file data structure....
Text::Header
RFC 822/2068 header and unheader functions...
Perl module RFC header RFC 822/2068 header unheader functions
Resize Header
Easily resize the email header pane with this add-on for Mozilla Thunderbird...
Header Design Inc.
Give a compact view to the message reader header with this add-on for Mozilla Thunderbird...
Ogg::Vorbis::Header
Ogg::Vorbis::Header is an object-oriented interface to Ogg Vorbis information and comment fields....
Perl module ogg Vorbis Ogg information interface Vorbis comments interface