gzip was written by Jean-loup Gailly , with portions written by Mark Adler (inflate.c), Peter Jannesen (unlzw.c) and Haruhiko Okumura (unlzh.c). The zip deflate format was defined by Phil Katz. Thanks to those who reported problems and suggested various improvements. Here is a partial list of them: Robert Abramovitz bromo@cougar.tandem.com Jay Adams jka@ece.cmu.edu Mark Adler madler@cco.caltech.edu Edwin Allum edwin@csri.toronto.edu Joseph Arceneaux jla@gnu.ai.mit.edu Jim Avera jim.avera@gmail.com Tim Auckland tda10@cus.cam.ac.uk Ken-ichiro Aoki aoki@madonna.physics.ucla.edu David Ascher da@marlowe.cog.brown.edu Eric Backus ericb@lsid.hp.com Becky A. Badgett badgett@cs.utexas.edu Bo Nygaard Bai bai@iesd.auc.dk Dave Barber dbarber@apocalypse.bbn.com Daniel Barkalow barkalow@iabervon.org Jeff Beadles jeff@onion.rain.com Rene Beaulieu reneb@distri.hydro.qc.ca Neal Becker neal@ctd.comsat.com Dieter Becker becker@med-in.uni-sb.de Nelson H. F. Beebe beebe@geronimo.math.utah.edu David J. N. Begley dbegley@st.nepean.uws.edu.au Eric Benoit eric@ecks.ca Bob Beresh rberesh@rd.hydro.on.ca Jim Bernard jbernard@iola.mines.colorado.edu Karl Berry karl@freefriends.org James W. Birdsall jwbirdsa@picarefy.picarefy.com Eric Blake eblake@redhat.com Hanno Böck hanno@hboeck.de Meo Bogliolo bartolomeo.bogliolo@xenialab.it Scott Bolte scott@craycos.com Wayne E. Bouchard web@paladine.hacks.arizona.edu Marc Boucher marc@cam.org Ola Brahammar pt90ob@pt.hk-r.se Dave Brennan brennan@hal.com Alan Brown dogbowl@dogbox.acme.gen.nz Michael L. Brown brown@wi.extrel.com Rodney Brown rdb@mel.cocam.oz.au Bruce bde@runx.oz.au Bill Bumgarner bbum@stone.com Leila Burrell-Davis leilabd@syma.sussex.ac.uk Rich Burridge rich.burridge@oracle.com Roger Butenuth butenuth@ira.uka.de Rodrigo Campos rodrigo@sdfg.com.ar Jon Cargille jcargill@cs.wisc.edu Bud Carlson bud@isle.pegasus.com Lim Fung Chai fclim@i1sin.daq.semi.harris.com Wes Chalfant wes@kofax.com Andrew A. Chernov ache@astral.msk.su Paul Close pdc@lunch.wpd.sgi.com Jeff Coffler coffler@jac.enet.dec.com Will Colley wcc3@occs.cs.oberlin.edu Lasse Collin lasse.collin@tukaani.org Roger Cornelius sherpa!rac@uunet.uu.net Kevin Cosgrove kevinc@tekig6.pen.tek.com Stephen J Cowley s.j.cowley@amtp.cam.ac.uk Ron Cox roncox@indirect.com Frank Crawford frank@photon.ansto.gov.au James R. Crawford qralston@cislabs.pitt.edu Lawrence Crowl crowl@research.cs.orst.edu Klaus Dahlenburg kdburg@incoahe.hanse.de William E Davidsen davidsen@ariel.crd.ge.com John M. DeDourek dedourek@aixive2.cs.unb.ca Jeff Deifik jdeifik@isi.edu Vince DeMarco vince@whatnxt.cuc.ab.ca Michael De La Rue p91152@cplab.physics.edinburgh.ac.uk Jeff Delinck delinck@pa621a.inland.com John DeRoo deroo@grout.adv.shr.dec.com Jim Diamond zsd@axe.drea.dnd.ca Antonio Diaz Diaz ant_diaz@teleline.es Stefano Diomedi sd@teculx.tecsiel.it Lawrence R. Dodd dodd@roebling.poly.edu Matthew Donadio donadio@mxd120.rh.psu.edu Andy Dougherty andy@crystal.phys.lafayette.edu Darrell Duane dduane@mason1.gmu.edu John Eaton jwe@che.utexas.edu Will Edgington wedgingt@ptolemy.arc.nasa.gov Brian Edmonds edmonds@edmonds.home.cs.ubc.ca Paul Eggert eggert@cs.ucla.edu Enami enami@sys.ptg.sony.co.jp Kristoffer Eriksson ske@pkmab.se Daniel Eriksson m91der@bellatrix.tdb.uu.se Denis Excoffier 3.1416@free.fr Larry Fahnoe fahnoe@c1mpls.mn.org Rik Faith faith@cs.unc.edu Michael Felt aixtools@felt.demon.nl Cristian Ferretti cfs@poincare.mat.puc.cl Karl-Jose Filler pla_jfi@pki-nbg.philips.de Valery Fine fine@vxcern.cern.ch Bob Fischer bobf@milne.geology.yale.edu Per Foreby perf@efd.lth.se Alexander Fraser alex@cs.umb.edu Noah Friedman friedman@gnu.ai.mit.edu Bob Friesenhahn bfriesen@iphase.com Gerhard Friesland-Köpke frieslan@rzdspc3.informatik.uni-hamburg.de Andy Fyfe andy@scp.caltech.edu Bdale Garbee bdale@gag.com Geoff geoff@frs.faxon.com Sam Geeraerts samgee@elmundolibre.be Arnd Gerns gerns@informatik.uni-hildesheim.de Kaveh R. Ghazi ghazi@staccato.rutgers.edu Bjarni Ingi Gislason bjarniig@rhi.hi.is Assaf Gordon assafgordon@gmail.com Torbjörn Granlund tege@sics.se Carl Greco cgreco@parrot.creighton.edu Bruno Haible bruno@clisp.org Junio Hamano junio@shadow.twinsun.com Harald Hanche-Olsen hanche@ams.sunysb.edu Darrel R. Hankerson hankedr@mail.auburn.edu Mark Hanning-Lee markhl@romeo.caltech.edu Lars Hecking st000002@hrz1.hrz.th-darmstadt.de Aki Helin aki.helin@iki.fi Rüdiger Helsch ruediger@ramz.ing.tu-bs.de Mark C. Henderson mch@sqwest.wimsey.bc.ca Karl Heuer karl@kelp.boston.ma.us Jarkko Hietaniemi jhi@dol-guldur.hut.fi Thomas Hiller hiller@fzi.de Eiji Hirai hirai@cc.swarthmore.edu Vidar Holen vidar@vidarholen.net Kjetil Torgrim Homme kjetilho@ifi.uio.no Robert D. Houk rdh@sli.com Jim Howard jim_howard@mentorg.com Preston Hunt gt5708a@prism.gatech.edu Shane C Hutchins sch@nymph.msel.unh.edu Hutch hutchinson@wrair-emh1.army.mil Lester Ingber ingber@alumni.caltech.edu Ken Ishii ishii@sni-usa.com Per Steinar Iversen iversen@vsfys1.fi.uib.no Chris Jacobsen jacobsen@xray1.physics.sunysb.edu Michal Jaegermann ntomczak@vm.ucs.ualberta.ca Brian Jones brianj@skat.usc.edu Denny de Jonge witaddj@dutrex.tudelft.nl Arne H. Juul arnej@lise.unit.no Dana Jacobsen jacobsd@solar.cor2.epa.gov Dan Jacobson jidanni@jidanni.org Peter Jannesen peter@ncs.nl Sverre Jarp Yanyan Jiang jiangyy@outlook.com Brian D. Johnston johnstonb@med.ge.com Walter W. Jones wwj@candela.cfr.nist.gov Tom Judson judson@scf.usc.edu Henry G. Juengst juengst@saph2.physik.uni-bonn.de Kiyoshi KANAZAWA yoi_no_myoujou@yahoo.co.jp Young Mo Kang kym327@gmail.com Sarantos Kapidakis sarantos%manteion@ics.forth.gr Helmut Karlowski helmut.karlowski@ish.de Amir J. Katz amir@matis.ingr.com Steve Kelem kelem@castor.xilinx.com Steven Kimball kimball@shrew.sanders.lockheed.com Randy Kirchhof rkk@posms.aus.tx.us Ned Kittlitz kittlitz@seagoon.sw.stratus.com Sakai Kiyotaka ksakai@mtl.t.u-tokyo.ac.jp Philip C Kizer pckizer@gonzo.tamu.edu Pete Klammer pklammer@ouray.denver.colorado.edu Fritz Kleemann kleemann@informatik.uni-wuerzburg.dbp.de Wilhelm B. Kloke wb@ifado.arb-phys.uni-dortmund.de Tom Kloos tk@sequent.com Carsten Koch carsten.koch@icem.de Winfried König win@in.rhein-main.de Mathias Körber mathias@solomon.technet.sg Steph Konigsdorfer s.konigsdorfer@frmy.bull.fr Leif Kornstaedt leif@rumtifsl.ruessel.sub.org Helge Kreutzmann debian@helgefjell.de Michael D. Lawler mdlawler@bsu-cs.bsu.edu Kevin Layer layer@franz.com Howard D. Leadmon howardl@wb3ffv.ampr.org Alexander Lehmann alex@hal.rhein-main.de Simon Leinen simon@lia.di.epfl.ch Burt Leland burt@molecular.com Tony Leneis tony@plaza.adp.ds.com Hugues Leroy hugues.leroy@irisa.fr Marty Leisner leisner@eso.mc.xerox.com Ilya Leoshkevich iii@linux.ibm.com Jason Leschnik jason@leschnik.me Charles Levert charles@aramis.comm.polymtl.ca Dmitry V. Levin ldv@altlinux.org Richard Levitte levitte@e.kth.se Torbjörn Lindh toobii@elixir.e.kth.se David R. Linn drl@vuse.vanderbilt.edu Antonio Lioy cat@athena.polito.it Jamie Lokier u90jl@ecs.oxford.ac.uk Richard Lloyd R.K.Lloyd@csc.liv.ac.uk David J. MacKenzie djm@eng.umd.edu John R MacMillan john@chance.gts.org Ron Male male@eso.mc.xerox.com Jakub Martisko jamartis@redhat.com Don R. Maszle maze@bea.lbl.gov Jaye Mathisen osyjm@cs.montana.edu Telly Mavroidis mavroidi@acf2.nyu.edu Imed Eddine Mbarki mbarki@pacific.cmpe.psu.edu Steeve McCauley steeve@pooh.geophys.mcgill.ca Tom McConnell tmcconne@sedona.intel.com Tod McQuillin mcquill@ccit05.duq.edu Tye McQueen tye@spillman.com Bernd Melchers melchers@chemie.fu-berlin.de Jason Merrill jason@jarthur.claremont.edu Dean S. Messing deanm@medulla.labs.tek.com M. Mesturino mesturino@cselt.stet.it Luke Mewburn zak@rmit.edu.au Jim Meyering jim@meyering.net Dragan Milicic milicic@math.utah.edu Frédéric Miserey none.fred@applelink.apple.com Marcel J.E. Mol marcel@duteca.et.tudelft.nl Soren Juul Moller sjm@dde.dk Chris Moore moore@src.bae.co.uk Dan Mosedale mosedale@genome.stanford.edu Helmut Mülner hmuelner@fiicmds04.tu-graz.ac.at Urban D Müller umueller@amiga.physik.unizh.ch Ulrich Müller ulm@vsnhdb.cern.ch Timothy Murphy tim@maths.tcd.ie Greg Naber greg@squally.halcyon.com Thiemo Nagel thiemo.nagel@ph.tum.de Jay Nayegandhi jayng@bbiv02.enet.dec.com Paul K. Neville II pkn2@idsi.com Karl L. Noell noell@informatik.fh-wiesbaden.dbp.de Demizu Noritoshi nori-d@is.aist-nara.ac.jp Mark Nudelman markn@greenwoodsoftware.com Todd Ogasawara todd@protege.pegasus.com Helge Oldach helge.oldach@stollmann.de Arthur David Olson ado@elsie.nci.nih.gov Piet van Oostrum piet@cs.ruu.nl Rafael R. Pappalardo rafapa@obelix.cica.es Mike Pearlman canuck@masc38.rice.edu Jörg-Volker Peetz peetz@dynato-kyma.net Yves Perrenoud pyves@nuga.alphanet.ch Hal Peterson hrp@pecan.cray.com Pascal Petit petit@cadillac.ibp.fr Bruno Pillard bp@chorus.fr François Pinard pinard@iro.umontreal.ca Jay Pinkos pinkos@butyng.bu.edu Petr Písař petr.pisar@atlas.cz Thomas Plass thomas@cogsci.ed.ac.uk Mike Polo mikep@cfsmo.honeywell.com Francesco Potortì pot@fly.cnuce.cnr.it Will Priest bpriest@lobby.ti.com Johannes Przybilla johannes.przybilla@rwth-aachen.de David Purves purves@apogee.com Andreas Raab ar@nvmr.robin.de Pavel Raiskup praiskup@redhat.com Eric S. Raymond esr@snark.thyrsus.com Klaus Reimann kr@cip.physik.uni-stuttgart.de Michael Rendell michael@mercury.cs.mun.ca Hal Render render@massive.uccs.edu Julian F. Reschke julian@math.uni-muenster.de Phil Richards Phil.Richards@prg.oxford.ac.uk Mark Roberts mroberts@rapid-arts-movement.de Roland B Roberts roberts@nsrl31.nsrl.rochester.edu Arnold Robbins arnold@cc.gatech.edu Kevin Rodgers kevin@rolling-stone.den.mmc.com Kai Uwe Rommel rommel@informatik.tu-muenchen.de Paul Rubin phr@america.telebit.com Wolfgang Rupprecht wolfgang@wsrcc.com Rusty Russell rusty@rustcorp.com.au Jonathan Ryshpan jon@amito.hitachi.com Paul A Sand pas@unh.edu Tony Sanders sanders@bsdi.com Mike Sangrey mike@sojurn.lns.pa.us Niimi Satoshi a01309@cfi.waseda.ac.jp Fulvio Scapin trantorvega@gmail.com Marc Schaefer sysadm@alphanet.ch Andreas Schwab schwab@lamothe.informatik.uni-dortmund.de Eric Schenk schenk@cs.toronto.edu Eric P. Scott eps@cs.sfsu.edu Carpe Sébastien Sebastien.Carpe@worldline.com Olaf Seibert rhialto@mbfys.kun.nl Sunando Sen sens@fasecon.econ.nyu.edu Harry Shamansky hts@hertz.eng.ohio-state.edu Amos Shapira amoss@cs.huji.ac.il Rick Sladkey jrs@world.std.com Daniel L Smith dls@autodesk.com Fred Smith fredex%fcshome@merk.merk.com Ripduman Sohan Ripduman.Sohan@cl.cam.ac.uk Stephen Soliday soliday@ncat.edu Paul Southworth pauls@css.itd.umich.edu Rob Spencer robbie@winkle.bhpese.oz.au Richard Stallman rms@gnu.ai.mit.edu Carsten Steger carsten.steger@informatik.tu-muenchen.de David Sundstrom sunds@anon.asic.sc.ti.com Ed Sznyter ews@babel.babel.com Hideaki Tanabe arctanx@iyeyasu.ynl.t.u-tokyo.ac.jp Andrew Telford ajt@peregrin.resmel.bhp.com.au Glenn E. Thobe thobe@getunx.info.com Kei Thomsen kt@keihh.hanse.de Karsten Thygesen karthy@dannug.dk Mark Towfiq towfiq@microdyne.com Jeff Treece treece@sabbagh.com Oliver Trepte oliver@ikaros.fysik4.kth.se Stephane Tsacas slt@is21.isoft.fr Stephen Tweedie sct@dcs.ed.ac.uk John R. Vanderpool fish@daacdev1.stx.com Sotiris Vassilopoulos vassilopoulos@virginia.edu Pedro A. M. Vazquez vazquez@iqm.unicamp.br Rob Vermaas rob.vermaas@gmail.com Arjan de Vet devet@win.tue.nl Larry W. Virden lvirden@cas.org Vadim V. Vlasov vvlasov@inucres.msk.su Eduard Vopicka eduard.vopicka@vse.cs Theo Vosse vosse@ruls41.leidenuniv.nl Darin Wayrynen darin@pcg.uucp Marcel Waldvogel marcel@nice.usergroup.ethz.ch Stephen J. Walick steve@nshore.org Jeffrey Walton noloader@gmail.com Gray Watson gray@antaire.com David Watt dmwatt@smersh.cambridge.ma.us Jaroslaw Weglinski jaroslaw.weglinski@atendesoftware.pl Scott Weikart scott@igc.apc.org Ivo Welch iwelch@agsm.ucla.edu Bernhard M. Wiedemann bwiedemann@suse.de Jochen Wiedmann zrawi01@zmcipdec1.zdv.uni-tuebingen.de Gijsb. Wiesenekker wiesenecker@sara.nl Wietze van Winden wietze@swi.psy.uva.nl Carl Worth cworth@cworth.org Frank Wübbeling wuebbel@math.uni-muenster.de Larry W. Virden lwv26@cas.org Bill Wohler wohler@sap-ag.de Lv Ying lvying6@huawei.com Denys Zagorui denys.zagorui@globallogic.com Jamie Zawinski jwz@lucid.com Yuxi Zhang YZhang@qnx.com Christos Zoulas christos@deshaw.com