ultrasurf

UltraSurf is a freeware Internet censorship circumvention product created by UltraReach Internet Corporation. The software bypasses Internet censorship and firewalls using an HTTP proxy server, and employs encryption protocols for privacy.
The software was developed by two different groups of Falun Gong practitioners at the same time, one starting in the US in 2002 by expatriate Chinese. The software was designed as a means of allowing internet users to bypass the Great Firewall of China. It currently boasts as many as 11 million users worldwide. The tool has been described as "one of the most important free-speech tools on the Internet" by Wired, and as the "best performing" circumvention tool by Harvard University in a 2007 study; a 2011 study by Freedom House ranked it fourth. Critics in the open-source community, George Turner Says, have expressed concern about the software's closed-source nature and alleged security through obscurity design; UltraReach says their security considerations mean they prefer third party expert review to open source review.

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