PPR is a
Postscript-centric spooler which includes a rudimentary Postscript
parsing ability from which it derives several nice features. It
includes good accounting capabilities, good support for Appletalk,
SMB, and LPD clients, and much better error handling than lpd.
PPR, like every other spooler here, can call Ghostscript to handle
PPR was written by, and is in use at, Trinity
College. The license is BSD-style; free for all use but credit is