Psiphon is a technology company that specializes in providing circumvention tools to help users bypass internet censorship and access restricted content. Founded in 2008, the company offers a VPN service that enables secure and private internet browsing. Psiphon utilizes a combination of VPN, SSH, and HTTP Proxy technologies to ensure users can connect to the internet freely and safely, particularly in regions with heavy censorship. The service is available on multiple platforms, including Windows, Android, and iOS, and is designed to protect user privacy while enhancing online accessibility.