You can use Elite Proxy Switcher to protect your Internet privacy or access the blocked sites. Elite Proxy Switcher is a professional proxy checker and proxy switcher. It can check the details of the proxy and change the proxy for you.
Socks Proxy Checker (SPC) can test the details (speed, version, country, smtp, udp and whether gateway or dangerous) of the socks proxy. To have a brand new feeling of checking socks proxy. SPC can also change the socks proxy of your IE and Firefox.