Shelloid User-Defined Extranet (UDX) cloud platform enables users to securely open their service ports to other devices across the Internet at the click of a button. The platform is ideally suited for ad hoc, flexible, and selective sharing of networked software services for which the traditional VPN solutions are too rigid and desktop sharing is too intrusive. The platform is now open for beta at: https://shelloid.com. Full beta launch news is available at: http://blog.shelloid.com/2014/08/device-to-device-service-sharing-at.html