Megaproxy™ works as a gateway between your workstation and the Internet. When a user accesses the Web through Megaproxy™, a browser sends all web page requests to the Megaproxy™ security system over a strong e-commerce grade SSL encryption tunnel. Their servers process the requests and retrieve the web pages on your behalf. Megaproxy™ then acts to protect your identity and sanitizes the web pages before forwarding them back to a client browser.
Megaproxy™ is also a great tool for testing your web site. It allows you to get outside your ISP's environment and see what the rest of the world is seeing.
http://www.megaproxy.com/