We manage our printers and print jobs using Mac’s System Preferences->Print & Fax. Beneath the hood, Mac OS X is using a powerful printing system called CUPS. Turns out that CUPS has a web interface for you to manage and administer printers and jobs on your Mac.
To view the web interface, just point your browser to [http://127.0.0.1:631/](http://127.0.0.1:631/).
CUPS (some say stands for Common Unix Printing System) is by Michael Sweet and debuted in 1999. It is a free software under GNU General Public License and is also the default print engine for several Linux distributions such as Red Hat. Apple adopted CUPS since Mac OS X 10.2 in March 2002. In February 2007, Apple hired Michael Sweet and purchased the CUPS source code.