GProxy is a Firefox/Thunderbird add-on to manage and switch proxy settings easily. It supports GPass, FreeGate, UltraSurf, Garden, and other proxy systems, with Chinese and English interface. Many users consider Firefox a more secure and convenient browser. However, when they used it with FreeGate, UltraSurf, or Garden, they had to change its proxy setting manually, and reverse the setting after use. GProxy aims to solve this problem. GProxy is available for download as freeware for personal use.