For other information, see the Ghostscript overview.

Many people have contributed to the development of Ghostscript. In the new-user documentation we give special thanks to a few major contributors; here we wish to acknowledge and thank the following other people (in alphabetical order) who have contributed substantially to improving Ghostscript since its inception in 1986:

Hitoshi Aida

for help with the SunView driver

Pierre Arnaud

for bug reports and fixes

William Bader

for several drivers and bug reports

Alan Barclay

for the RGB TIFF drivers

Nelson H. F. Beebe

for testing on a wide variety of Unix architectures, and for the multi-architecture makefile

Karl Berry and Kathy Hargreaves

for helping create the fonts originally distributed with Ghostscript

James W. Birdsall

for the IBM ProPrinter driver

Andrew Birrell

for a challenging application

Jan Bottorff

for help with the Microsoft Windows driver

Tom Brosnan

for the Desqview/X port

Philip Brown

for the LaserJet IIID duplex additions

Tobias Burnus

for many challenging bug reports

George Cameron

for DeskJet 500C and 550C drivers

Maurice Castro

a collaborator of Russell Lang's

Jeff Chua

for the idea and first implementation of ReopenPerPage

Phil Conrad

for originating the PPM utilities and the PCX and GIF drivers, and lots of bug reports

Michel Dagenais

for major help with the DeskJet driver

John Desrosiers

for the final work on the Microsoft Visual C++ makefiles, and for enhancements to the memory manager

Jim Dunham

for the OpenVMS makefile

Gershon Elber

for improvements to the BGI driver

Fritz Elfert

for the Unix file enumeration routine

George Ferguson

for some added man pages

Mike Ferrara

for help with the LaserJet driver and HP-UX

Andy Fyfe

for the BJ200 driver modifications to the BJ10e driver, and for the 3B1 driver

Tim Gallivan

for a port to the Atari ST

J. Greely

for help with the PostScript-to-ASCII filter

Gintautas Grigelionis

for a set of XBM/XPM icons

Paul Haeberli

for the ideas behind better color selection and trapezoid fill algorithms

Karl Hakimian

for the Tek 4693d drivers

Richard Hesketh

for GSPreview

Gunther Hess

for the unified inkjet printer driver

Thomas Hiller

for the Trident TVGA driver

Frans van Hoesel

for improvements to the DeskJet driver

Berthold K. P. Horn

for a better spot halftone screen

B. Jackowski and GUST (the Polish TeX users group)

for improvements to the TrueType font reader, and for the tiff2ps and ttf2pf utilities

Jouk Jansen

for motivating, testing, and providing some of the script file for the MMK/MMS build procedure

Earl Johnson

for the motivation for the ps2ascii utility

Ray Johnston

for a first draft of FAKEFONTS and EPSF recognition, and for many small bug fixes

Larry Jones

for simplifying and improving the portability of the pthreads interface code

Pete Kaiser

for beta testing, several versions of the OSF/1 font map, and an HTML version of the documentation

Norio Katayama

for the first implementation of composite fonts, and for testing and helping debug the later implementation

Alfred Kayser

for a DeskJet 500C driver and beta testing

Richard Keeney

for help with the SunView driver

Markku Koppinen

for a better circle-to-curve algorithm

Eleftherios Koutsofios

for help with the SunView driver

Tom Lane

for major help with adapting and integrating the IJG code

Sam Leffler

for the original TIFF G3 driver, and for finding some subtle bugs in the CCITTFaxEncode filter

Jonathan Luckey

for the high-resolution Imagewriter drivers

Ken Lunde

for providing pointers to freely available CJKV font-related resource

Ian MacPhedran

for a sixel driver

Jim Mayer

for help with the DeskJet and LaserJet drivers

Paul McJones

for help in identifying a variety of bugs

William L. Menninger

for a version of the PC display state save/restore code

Richard Mlynarik

for a nearly overwhelming volume of improvements and suggestions

Ulrich Mueller

for the LN03 driver

Daniel Newman

for major help with VMS and the CCITTFax filters

Bjorn S. Nilsson

for major help with VMS, including many updates of the DCL build scripts and creating the VMS help file

Roque Donizete de Oliveira

for testing and debugging, and a "man" page

Gerbert Orasche

for some minor bug fixes

Marc Paquette

for the original PaintJet driver

Hal Peterson

for major help with BDF fonts

Andy Piper

for the first draft of the WindowID feature

Martin Pirker

for fixing two major problems with TrueType fonts

Tom Quinn

for the Canon LBP-8II driver

Matthias Rabe

for work on an OS/2 port

Jerry Roylance

for help with statusdict

Dave St. Clair

for the color Epson/Fujitsu driver

Jan Sanislo

for two subtle but vital fixes

Clemens Schrimpe

for help with accented characters

Scott Schwartz

for improvements to gslp.ps

Mike Smolenski

for the Sony drivers

Snoopy

for major help with Hershey fonts, and many other contributions

Karsten Spang

for the Tektronix 4695/4696 driver

Andreas Stolcke

for help with the SunView driver

Hans-Gerd Straeter

for finding many obscure bugs

Christoph Strozyk

for getting the URW fonts made available

Alexey Subbotin

for contributing an interface to GNU readline, and for the rewritten implementation of ==

Michael Sweet

for help with the high-density Epson driver

Guenther Thomsen

for the mid-density Epson driver

Gregg Townsend

for the low-resolution dithering algorithm

Christian Tschudin

for fixes to the virtual memory package, and for the original BubbleJet driver

Stephen Turnbull

for help with the DesqView/X port

Jos Vos

for the original PBM/PGM/PPM driver, and for much beta testing

Renze de Waal

for an improvement to the "SAFER" feature

Allan Wax

for the AT&T 6300 modification to the BGI driver

Mark Wedel

for the Apple DMP driver

David Wexelblat

for the high-resolution 9-pin Epson driver

George N. White III

for testing the PDF writer and contributing documentation

Elizabeth Zwicky

for some very challenging examples

The following people have also helped out by beta testing, by reporting bugs and/or fixes, or in other ways:

Juan Manual Acosta, Vikas Aggarwal, Michael Almond, Abramo Bagnara, Malcolm Bennett, David Brooks, Alex Cherepanov, Jim Collins, Peter da Silva, Art Dederick, Paul DuBois, Toerless Eckert, Bernhard Fabricius, Mark Friedman, Richard Foulk, Glenn Geers, Dave Goldblatt, Ben Goren, Dirk Grunwald, Lars Haakedal, Howard B. Halstead, Adam Hammer, George Hartzell, Mike Hoffmann, Charles Hulse, Brad Jones, Terry Jones, David Keppel, Anthony Lee, Marty Leisner, John Lundin Jr., Lee McLoughlin, Stergios Marinopoulos, Herb Martin, David Mathog,David Maynard, Doug McDonald, Rich Murphey, Russ Nelson, Peter Phillips, Mark Rawling, Philippe Robert, Tomas Rokicki, Wolfgang Rupprecht, Bill Schelter, Larry Schwimmer, Bakul Shah, Erik Talvola, Henrik Theiling, Mark A. Thomas, Kjetil Bernhard Thomassen, Amanda Walker, Peter Wan, John L. Wehle, Carsten Wiethoff, Carl Witty, Frank Yellin, Jamie Zawinski

If your name appears on the above list and we've omitted a particular contribution you made, or if we've accidentally overlooked you entirely, please forgive us: just let us know at [email protected], and you will be properly acknowledged in the next release.

Ghostscript version 6.50, 2 December 2000