Foomatic is a comprehensive, spooler-independent database of printers,
printer drivers, and driver descriptions. It contains utilities to
generate driver description files and printer queues for CUPS, LPD,
LPRng, and PDQ using the database. There is also the possibility to
read the PJL options out of PJL-capable laser printers and take them
into account at the driver description file generation.
There are spooler-independent command line interfaces to manipulate
queues (foomatic-configure) and to print files/manipulate jobs
(foomatic printjob).
The site http://www.linuxprinting.org/ is based on this database.