Quoted from http://phpproxies.com/
Glype is new, released just in January 2009, but it has already been downloaded 15,000 times.
PHP Web Proxy
This script is used for many different proxy sites, download it through SourceForge.
Freshmeat.net’s script can turn your web host’s server into a proxy server in no time.
If you are a webmaster wondering what happened to the popular PHProxy read this.