These are proven effective and free anti-censorship software that are widely used in China and the Middle East. The 1st link also tackles the latest "Green Dam - Youth Escort" filtering software that will be imposed on all new PCs in China.

http://dongtaiwang.com/loc/download.php

http://www.wujie.net/

http://heartyit.com/chinese.html   

http://www.gpass1.com/index_cn.php

Please keep up-to-date about what's really going on, and never lose your conscience like the Party does now. Information freedom is the foundation for China's long-live prosperity.  

2009匿名网民宣言

https://docs.google.com/View?id=df563ttp_0c4tt2fdp