knProxy — Free PHP proxy program

As long as you have your own space, even if it is free, you can use knProxy to build your own free proxy for private use.
It is very easy to use. Just download the program and upload it to your space.
knProxy official: http://kanoha.org/tags/knproxy/
knProxy project: http://sourceforge.net/projects/knproxy/ or https://github.com/jabbany/knProxy
Love8's free proxy demo: http://love8.org/get/