A computer includes a processor and a memory containing a program executable by the processor. The computer is connected to a network, which is also connected to an image forming device and an external system configured to generate external print jobs. The code is configured to maintain a local print queue including local print jobs based on content generated by another computer program executed by the computer; receive a request for a job list from the image forming device; send a request for a list of the external print jobs to the external system; receive a list of the external print jobs from the external system; merge the list of the external print jobs with a list of the local print jobs in the local print queue to form a combined job list; and send the combined job list to the image forming apparatus.