CUPS provides a portable printing layer for UNIX®based operating systems. It is developed and maintained by Apple Inc. to promote a standard printing solution. CUPS is the standard printing
system used on MacOS® X and most Linux® distributions.
CUPS uses the Internet Printing Protocol ("IPP") as the basis for managing print jobs and queues and adds network printer browsing and PostScript Printer Description ("PPD") based printing options to support real-world printing.
Add Printer: Use it to add a new printer.
Manage Jobs: Can cancel/delete a printer job still queued in the network.
Manage Printers: Used it to modify or delete printer setup in CUPS.