Device interoperability format and method for assembling self-contained executable device interoperability software application package conforming to an interoperability format that is completely self-contained and sufficient to carry out an intended purpose of the application on a plurality of connected or intermittently connected devices, the executable device interoperability software application package when executed allowing the plurality of devices to interoperate with each other. Method of forming a linearly contiguous binary encoded part images, and packaging the formed part images together into an executable device interoperability software application package. Computer program product for execution on a computer, information appliance, or other device. Data structure for self-contained executable device interoperability software application package.