R would not be what it is today without the invaluable help of these people, who contributed by donating code, bug fixes and documentation: Valerio Aimale Thomas Baier Roger Bivand Ben Bolker Göran Broström Vince Carey Saikat DebRoy Brian D'Urso Lyndon Drake Dirk Eddelbuettel John Fox Paul Gilbert Torsten Hothorn Robert King Kjetil Kjernsmo Philippe Lambert Jan de Leeuw Uwe Ligges Jim Lindsey Patrick Lindsey Catherine Loader Gordon Maclean John Maindonald David Meyer Jens Oehlschägel Steve Oncley Richard O'Keefe Hubert Palme José C. Pinheiro Jonathan Rougier Günther Sawitzki Bill Simpson Gordon Smyth Adrian Trapletti Terry Therneau Bill Venables Gregory R. Warnes Andreas Weingessel Morten Welinder Simon Wood Achim Zeileis We have probably omitted some important names here because of incomplete record keeping. If we have overlooked you, please let us know and we'll update the list. Many more, too numerous to mention here, have contributed by sending bug reports and suggesting various improvements. Simon Davies whilst at the University of Auckland wrote the original version of glm(). Julian Harris and Wing Kwong (Tiki) Wan whilst at the University of Auckland assisted Ross Ihaka with the Macintosh port. R was inspired by the S environment which has been principally developed by John Chambers, with substantial input from Douglas Bates, Rick Becker, Bill Cleveland, Trevor Hastie, Daryl Pregibon and Allan Wilks. A special debt is owed to John Chambers who has graciously contributed advice and encouragement in the early days of R and later became a member of the core team.