A Proxy Setting Switcher For Firefox..
In this release :
Proxy system icon fixed.
Switcher allows you to changing proxy setting on your browser with a click.
If you have some problems to use Switcher. You must change “Run in Private Windows” setting to “Allow”.
For change this setting. typing in the address bar > “about:addons” then select Switcher addons. after that in “Details” tab change “Run in Private Windows” to “Allow”.