It is a proxy script written in Perl by James Marshall. This proxy script has been in development for many years, almost nearly a decade and offered for free by James Marshal at his site here
A paragraph qouted from his site describes it as:
This CGI script acts as an HTTP or FTP proxy. Through it, you can retrieve any resource that is accessible from the server it runs on. This is useful when your own access is limited, but you can reach a server that in turn can reach others that you can't. In addition, the user is kept as anonymous as possible from any servers. Common uses include: anonymous proxies similar to The Anonymizer, other personal uses, VPN-like functionality, and others. It's very simple to install, and very configurable.
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