Many people have contributed to PGPLOT over the years, and I thank all who have contributed code and device drivers or who have helped in debugging PGPLOT on a variety of systems. I am particularly grateful to the following for their major contributions: Klaus-Georg Adams, Scott Allendorf, Robert Deverill, C. T. Dum, Alan Fey, Karl Glazebrook, Diab Jerius, Chris Jacobs, Neil Killeen, Harry Lehto, Colin Lonsdale, Grant McIntosh, Massimo Manghi, Michael Michelsen, Jim Morgan, Martin Shepherd, Sam Southard, Allyn Tennant, David Terrett, Peter Teuben, Jean-Marc Zucconi.