Proxy Switcher allows you to modify your proxy settings easily from the toolbar panel. Toolbar icon indicates the current type of proxy your browser currently using. The UI for changing proxies is very intuitive. It is very close to the Firefox proxy manager window. The extension is designed such that no resource is used while the panel is closed. This is probably the lightest proxy switcher
It has completely replaced the Firefox’s limited proxying capabilities. It offers reliable, high-bandwidth proxy servers in 24 different countries. Foxyproxy automatically switches an internet connection across one or more proxy servers based on URL patterns i.e., it automates the manual process of editing Firefox’s Connection Settings dialog.
10 Best Add-Ons To Surf Internet Anonymously In FireFox Dec 10, 2016 hoxx vpn addon disabling other vpn addons | Firefox
Jan 20, 2018
Download Hoxx VPN Proxy for Firefox 3.10.0 Hoxx VPN Proxy is a VPN browser extension dedicated to Firefox and Chrome, which gives you the possibility to connect to another country in order to hide your real IP address, replace it with a Download Stealthy for Firefox 6.0 - softpedia