A4Proxy 2.52

"Anonymity 4 Proxy (A4Proxy) is a personal anonymous proxy server and anonymizer. Once you install on your own computer, it will allow you to surf the Web with privacy. This local proxy server includes a database with hundreds of anonymous public proxy servers located all over the world. The program is essential for those who value their privacy and who want to surf the web anonymously. With A4Proxy, you can scan each server, check its response time, confirm its anonymity, and test its speed in connection with the website or ftp-server that interests you (HTTP, HTTPS (Secure HTTP) and FTP are supported). You can choose the best candidate as your default proxy, or select the option to use a different proxy for each request. Advanced features allow you to actively hide yourself while surfing: A4Proxy can generate a fake IP address for each request, selectively modify HTTP variables, block cookies, and more."

http://www.inetprivacy.com/a4proxy/index.htm