It is spooler independent which means it can be used with Common Unix Printing System (CUPS), LPRng and others.
[1] It uses Ghostscript in the background, using options according to the PPD file of the printer.
Like CUPS, foomatic supposes that applications will produce output in PostScript.
If the output spools to a PostScript printer, no further action is needed.
The components of the package are: The following free drivers were specifically developed to work with foomatic: