IPExtra Anonymous Proxy - Web proxy at IPExtra.com, an internet tools website. - http://www.ipextra.com
The Evader - A free php proxy that allows you to surf annonymously with limited advertising. - http://www.theevader.com
Proxytastic.com - Anonymous http proxy. Allows cookies, script and image filtering and referrer blocking. Requires JavaScript. [PHProxy 0.4] - http://www.proxytastic.com/
Hujiko - Anonymous http proxy. Includes cookie filtering, and script blocking. Requires cookies. - http://hujiko.com/
Covered Tracks - Anonymous web proxy with ability to control cookies, JavaScript from other sites, Java applets, SSL, URL encryption, and online bookmarks. Requires JavaScript. - http://www.coveredtracks.com/
Unipeak - Anonymous web proxy service with advanced privacy features. - http://www.unipeak.com/