Programs that can use free space to build proxies

The programs are very simple to build, and the recommended ones are PHP programs. As long as there is a space that supports PHP, you can use it.
1. knProxy — Free PHP proxy program
2.APJP
For detailed configuration tutorial, please see:

GAE platform usage guide http://code.google.com/p/apjp/wiki/InstallGuideOnGAE
PHP Platform User Guide http://code.google.com/p/apjp/wiki/InstallGuideOnPHP
Deploy APJP client on Android phone http://code.google.com/p/apjp/wiki/ApjpAndroidSetup
(Opera Mobile browses Youtube videos through APJP proxy http://code.google.com/p/apjp/wiki/OperaApjpYoutubeSurfing)
Just select the tutorial reference you need.

3.Snova

Snova is really simple. With the help of AppId sharing plan, you can use it to proxy over the firewall without setting up the GAE server yourself. The steps are as follows:
Download Java from http://www.java.com/zh_CN/download/manual.jsp and install it.
Download Snova from http://code.google.com/p/snova/downloads/list and unzip it.
Double-click the startgui.bat file in the bin folder to run Snova. In the opened interface, click "Start" and wait for it to connect to the server.
Set the browser http/https proxy to 127.0.0.1 port 48100 to browse over the firewall.

4.India Web Proxy
5. GoAgent
6. Amazon EC2 + Putty
EC2 + SSH over the firewall 1/3 — Amazon AWS account registration
EC2 + SSH over the firewall 2/3—EC2 instance establishment
EC2 + SSH over the firewall 3/3 — SSH over the firewall settings
7. IPv6
References:
http://xijie.wordpress.com/
http://www.qishansun.info/