Greatfire monitors and challenges internet censorship in China.

GreatFire is an anonymous organization based in China. The organization launched its first project in 2011 in an effort to help bring transparency to online censorship in China. Now, GreatFire focuses on helping Chinese to freely access information. is implementing the concept of “collateral freedom” on the Internet and making their technology only available to any content provider who needs to unblock their content in any country that practices online censorship. GreatFire continues to test and experiment in China as censorship is pervasive and the censorship apparatus is well developed. They have launched an iOS app that the censors have been unable to block and launched mirror websites of FreeWeibo, China Digital Times, and Reuters which censors struggle to block.