About Info-ZIP

About Info-ZIP

LATEST RELEASES: Zip 3.00 was released on 7 July 2008. WiZ 5.03 was released on 11 March 2005. UnZip 6.0 was released on 29 April 2009. MacZip 1.06 was released on 22 February 2001. See the ​​Zip​​​, ​​UnZip​​​ and ​​WiZ​​ pages for current status and download locations. In addition, a new set of ​​discussion forums​​​ was set up in October 2007. These replace the older ​​QuickTopic forum​​, which was overrun by spam. (The spam postings have since been deleted, but further posts to the old forum are permanently disabled.)

Info-ZIP is a diverse, Internet-based workgroup of about 20 primary authors and over one hundred beta-testers, formed in 1990 as a mailing list hosted by Keith Petersen on the original SimTel site at the White Sands Missile Range in New Mexico.

Info-ZIP's purpose is to provide free, portable, high-quality versions of the ​​Zip​​​ and ​​UnZip​​ compressor-archiver utilities that are compatible with the DOS-based PKZIP by ​​PKWARE, Inc.​​

Info-ZIP supports hardware from microcomputers all the way up to Cray supercomputers, running on almost all versions of Unix, VMS, OS/2, Windows 9x/NT/etc. (a.k.a. Win32), Windows 3.x, Windows CE, MS-DOS, AmigaDOS, Atari TOS, Acorn RISC OS, BeOS, Mac OS, SMS/QDOS, MVS and OS/390 OE, VM/CMS, FlexOS, Tandem NSK and Human68K (Japanese). There is also some (old) support for LynxOS, TOPS-20, AOS/VS and Novell NLMs. Shared libraries (DLLs) are available for Unix, OS/2, Win32 and Win16, and graphical interfaces are available for Win32, Win16, WinCE and Mac OS.

Info-ZIP code has been incorporated into a number of third-party products as well, both commercial and freeware. Some of the more interesting ones (well, historically speaking) include the use of ​​UnZip​​ code in the unzip.dll distributed with IBM's OS/2 Warp BonusPak and WebExplorer, as part of the reinstallation code for the IBM Aptivas preloaded with OS/2 Warp, and as part of IBM's Infoprint product. Sun used Info-ZIP's self-extractor to distribute the NT version of their HotJava browser, Novell uses UnZip for NetWare 6 installation, and SAP includes it in Business One. Various Windows products such as WinZip and the DynaZIP DLLs incorporate Info-ZIP code, too. And let us not forget Pretty Good Privacy (PGP), an excellent encryption program that uses Info-ZIP code as a first step in encrypting files. Info-ZIP's primary compression engine has also been spun off into the free ​​zlib compression library​​, used in Netscape/Mozilla/Firefox, the Linux kernel, Windows, Java, virtually all ​​PNG​​-supporting software, and countless other products.

Info-ZIP can be reached by a web-based form, but you'll have to read our ​​Frequently Asked Questions​​​ page to find out how. Our two primary web sites are hosted by our very own Hunter Goatley and by the most excellent ​​SourceForge​​​. Secondary distribution sites are hosted by the ​​Comprehensive TeX Archive Network​​.

Info-ZIP Downloads

ZipInfo- for detailed zipfile information (​​Documentation​​)fUnZip- for extracting in a pipe (​​Documentation​​)UnZipSFX- for creating self-extracting archives (​​Documentation​​)

ZipNote- for adding/deleting comments to zipfiles (​​Documentation​​)ZipSplit- for splitting zipfiles (​​Documentation​​)ZipCloak- for encrypting and decrypting (with optionalzcryptadd-on package) (​​Documentation​​)

Info-ZIP Links

​​Info-ZIP License​​ - our new(er), BSD-like (i.e., very liberal) license​​Info-ZIP FAQ​​ - Frequently Asked Questions about how and where to download things, what about commercial usage, and anything else we think of​​Info-ZIP Mailing Lists​​ - how to subscribe to our announcements list (very low traffic) or general discussion list (relatively low traffic)Info-ZIP Internet Sites- we're everywhere! we're everywhere!

web pages:

files:

​​sourceforge-​​ (US, Ireland, France, Belgium, Switzerland, Germany, Australia, etc.; source and (some) current binaries) -Info-ZIP's home siteftp.info-zip.org (US) -Info-ZIP's other home site​​mirrorservice.org​​ (UK)tug.ctan.org (US)[FROZEN]ftp.tex.ac.uk (UK)[FROZEN]ftp.dante.de (Germany)[FROZEN]

​​Info-ZIP People​​ - who we are, where we are and what we do (below)​​Info-ZIP Rogue's Gallery​​ - scary (old) pictures of us​​Info-ZIP News​​ - recent news and happenings involving Info-ZIP and/or its members​​Zip "Imposters"​​ - other programs calledZip​​Related Links​​ - other compression and archiver resources, such as PKWARE and PNG

Info-ZIP People

The core Info-ZIP group consists of programmers from six countries on three continents:

Ed Gordon(US); Zip maintainerChristian Spieler(Germany); UnZip maintainer; Win32, DOSMike White(US); WiZ maintainer; Windows DLLsDirk Haase(Germany); MacZip maintainerMichael Cleary(US?); MVS​​Hunter Goatley​​ (US); VMS, mailing list administrator, primary web-site hostIan Gorman(Canada); VM/CMS, MVS (OS/390 Base)Greg Hartwig(US); VM/CMS​​Jonathan Hudson​​ (UK); SMS/QDOS, VMS​​Paul Kienitz​​ (US); Amiga, Win32Johnny Lee(Canada); DOS, Win32​​Steve P. Miller​​ (US); Windows CEKeith Owens(Australia); MVS, Fujitsu MSP​​Kai Uwe Rommel​​ (Germany); OS/2Steve Salisbury(US); Win32​​Steven M. Schweda​​ (US); VMS​​Dave Smith​​ (UK); Tandem NSK​​Cosmin Truta​​ (Canada); Zip and UnZip maintenance releasesOnno van der Linden(Netherlands); former Zip maintainerPaul von Behren(US); OS/390 OpenEdition

If you're brave enough, you can check out the ​​Info-ZIP Rogue's Gallery​​ and see what some of us (used to) look like. It's fairly hideous.

Former members of the core Info-ZIP group (i.e., those who no longer even pretend to be active) include:

​​Mark Adler​​ (US); original Zip author; UnZip decompression​​John Bush​​ (US); Amiga, SolarisKarl Davis(Australia); Acorn RISC OSHarald Denker(Germany); Atari, MVS​​Jean-loup Gailly​​​ (France); Zip compression; former Zip maintainer/co-author; Unix, DOS [aussi​​en français​​]Robert Heath(US); Windows GUI​​Chris Herborth​​ (Canada); QNX, BeOS, formerly AtariDavid Kirschbaum(US); original UnZip maintainerIgor Mandrichenko(Russia/Ukraine); VMS​​Sergio Monesi​​ (Italy); Acorn RISC OS​​Rainer Nausedat​​ (Germany); 64KB deflateGeorge Petrov(Netherlands); MVS, VM/CMS​​Greg Roelofs​​ (US); former UnZip maintainer/co-author; Unix, OS/2, DOS, early VMS portAntoine Verheijen(Canada); Macintosh​​Rich Wales​​ (US); original Zip co-author

In addition, Info-ZIP would like to tip our collective hat to ​​Samuel H. Smith​​, the gentleman who wrote the original MS-DOS unzip on which Info-ZIP's UnZip 3.0 was based--and who kindly made the source code available for free. Even though virtually all of his code has by now been rewritten from scratch, Info-ZIP still owes Mr. Smith a debt of gratitude for getting us into this mess. A package of virtual chocolate-chip cookies is in the e-mail.

Last updated 8 July 2008. Web page (occasionally) maintained by Greg Roelofs, but please direct all comments and questions to the Info-ZIP authors at the address/bug page given in the ​​FAQ​​.

Copyright © 1995-2008 ​​Greg Roelofs​​.

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