An anonymous reader quotes Fortune:Services helping Chinese users circumvent the "Great Firewall of China" have been pulled from Apple's Chinese App Store en masse. On Saturday morning, at least some software makers affected by the sweep received notification from Apple that their tools were removed for violating Chinese law. Internet censorship in China restricts communications about topics including democracy, Tibetan freedom, and the 1989 Tienanmen Square protests. The culling primarily seems to have affected virtual private networks, or VPNs, which mask users' Internet activity and data from outside monitoring. According to a report by the New York Times, many of the most popular such apps are now missing from the Chinese App Store.