The Core Model represents the combined activities of the code at work within the Arch-OS system. The Core Model is available as a live 3D model of this code and can be downloaded as a screen saver or as an online 3D model. Every computer in the Portland Square building has the option of using the Core Model screensaver. This generates a dynamic recursive environment within the building. Sitting in the building the inhabitants can see a live, real-time 3D representation of the building, the space they occupy, on their screen. They can even pinpoint the data that is being generated by their viewing of the Core Model over their local network. The Core Model has many characteristics of 'Liquid Architecture'. It has a high level of virtuality about it, but this model is a tangible and dynamic real-time inhabited space. Its existence is dependant on the occupants of the building and the digital fall-out from their interactions with it.

The Arch-OS Screensaver can be downloaded from the download section.