Data output from an existing application to specific devices can be easily distributed to plural devices. A method of distributing device-specific data output from an application on a computer that executes a specific process according to an application and has two or more communication ports causes the computer to execute a step of acquiring device-specific data output by an executed program to one specific communication port at the operating system kernel layer before the device-specific data is received at the communication port; and a step of analyzing the device-specific data acquired at the application layer, determines the device to which the device-specific data, and outputs the device-specific data to the communication port to which the device is connected.