The phrase designates applications considered essential for accessing and navigating the internet outside of mainland China. These tools often circumvent restrictions imposed by the Great Firewall, allowing users to access blocked websites, social media platforms, and other online resources. Examples include Virtual Private Networks (VPNs), secure messaging applications, and alternative app stores.
Such applications are vital for individuals needing unrestricted access to global information, including researchers, international business professionals, and those seeking diverse perspectives. Their usage enables communication with contacts outside the region, facilitates academic research by providing access to global databases, and supports commerce by enabling international transactions and access to overseas markets. Historically, the demand for these tools has increased in parallel with the tightening of internet censorship measures.