Short description of Proxifier 2.91: Proxifier is a program that allows network applications that do not support working through proxy servers to operate through a HTTP or SOCKS proxy server or a chain of proxy servers. With Proxifier you can work with any Internet clients from network that is separated from Internet by a firewall (only one open port is required). Besides, Proxifier will help secure your privacy, send and receive email through a proxy server or a chain of proxies.