PHP-Proxy - A web proxy script written in PHP and created as an alternative to Glype.
CCProxy - Want to share Internet connection? Get every computer online through a single Internet connection?
CGIProxy - CGIProxy acts as an HTTP, HTTPS, or FTP proxy through it, the user can retrieve any resource that is accessible from the server.
Apache Traffic Server - Fast, scalable and extensible HTTP/S 2 and 1.1 compliant caching proxy server.
Censor Dodge - The fastest and most up-to-date web proxy on the market.
FreeProxy - Feature summary from website:* Internet connection sharing with demand dialling