PKZIP

Revision as of 13:07, 16 November 2024

This article is about the software. For the file format, see ZIP.

PKZIP is a line of compression/archiving software, known for its association with the ZIP file format. It was developed by PKWARE.

In some versions, the utility named PKZIP only does compression, and the companion PKUNZIP utility does decompression.

Native formats

• ZIP
• DEFLATE
• Certain Self-extracting ZIP formats

See also

• PKARC/PKPAK (predecessor)

Software

Software for DOS

• v0.80-beta (1989-01-10): PKZ080.ZIP
• v0.90 (1989-02-01): pkz090.exe
• v0.92 (1989-03-06): pkz092.exe
• v1.01 (1989-07-21): pkz101.exe
• v1.02 (1989-10-01): pkz102.exe
• v1.10 (1990-03-15): pkz110.exe
  • v1.10 "export" version (no encryption): pkz110eu.exe
• v1.93-alpha (1991-10-15): PKZ193A.EXE
• v2.04c (1992-12-28): PKZ204C.EXE
• v2.04e (1993-01-25): PKZ204E.EXE
  • UPD204E.ZIP - Upgrades registered 2.04c to 2.04e.
• v2.04g (1993-02-01): PKZ204G.EXE
  • PK204C2G.ZIP - Upgrades registered 2.04c to 2.04g.
  • PK204E2G.ZIP - Upgrades registered 2.04e to 2.04g.
• v2.50 (1999-03-01): pk250dos.exe
  • pk250upd.zip - Upgrades registered 2.04g to 2.50.
• Various versions at old-dos.ru
• Fake "v2.01" (1992-03-15): D3SMARTP.ZIP → SMARTP1A.ZIP → PK*.EXE - A hack of v1.93-alpha

Software for OS/2

• v1.01 (1989-07-21): PKZ101_2.ZIP
• v1.02 (1989-10-01): PKZOS2.ZIP
• v1.09, IBM licensed (1991-01-15): OS2PKZIP.ZIP
• v2.50 (1997-05-01): pkos2250.exe

Software for Windows 3.x

• v2.01 (1996-02-15): pkzws201.zip
• v2.50 (1996-09-15): pk250w16.zip
• v2.60 (1997-12-15): pk260w16.exe
• v2.60.02 (1998-07-15): [1] → pk262w16.exe
• v2.60.03 (1998-11-01): pk263w16.exe

Software for 32-bit Windows, command line

• v2.50 (1998-04-15): pk250c32.exe
  • v2.50, DEC Alpha architecture: AlphaNT FTP → Utilities/pk250c_a.exe
• v4.00: pkzc400s.exe

Software for 32/64-bit Windows, GUI

(Selected versions, mainly historical)

Caution: Some 2.x versions are adware, and may be detected as malware.

• v2.50 (1996-09-15): pk250w32.zip
• v2.60 (1997-12-15): pk260w32.exe
  • v2.60, DEC Alpha architecture: AlphaNT FTP → Utilities/pk260w_a.exe
• v2.60.01(?) (1998-06-01): internet.au - CDrom Disc 3, Dec. 1998 → emailftp/win95/pk26cnet.exe
• v2.60.02 (1998-07-15): Best Sellers 33 → _UTILS/PKWARE/PK262WSP/pk262wsp.exe
• v2.60.03 (1998-11-01): pk263wsp.exe
• v2.70 (1999-06-01): pk270wsp.exe
• v4.00: [2] → pkzw400s.EXE

Related official software

• PKZF10.EXE - PKZFIND (File Finder Plus) v1.00 (1989-02-01)
• pkzf11.zip - PKZFIND v1.1 (1989-10-20)
• PKCNVT11.ZIP - PKCNVT/PKCNVZOO/PKCNVLZH (~1990-02-12) - Format conversion utilities
• pkzm100.zip - PKZMENU v1.00 (~1991-02-07)
• PKZM104.EXE - PKZMENU v1.04 (~1991-02-14)
• PKZF15.ZIP - PKZFIND 1.50 and PKZOOM 1.5 (~1995-06-15)

Notes

Registered versions

Registered users of v1.10 could request a code to use with the PUTAV utility. PUTAV could then be used to modify PKZIP.EXE file from the shareware version, to turn it into a kind of registered version, with "AV" feature enabled (-! option). Specifically, it modifies the 58 bytes starting at offset 33874, which are all 0 in the shareware version.

v2.x is similar, but there is now a special registered PKZIP.EXE, and only it can be modified in this way.

International versions

For some context regarding international versions ("Shareware Marketing", "AB Soft", etc.), see the ORDER.DOC file from, say, v2.04g.

It's unclear how many such special versions existed.

Links

• Wikipedia: PKZIP
• PKZIP website