PKZIP

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
• v2.04g (1993-02-01): PKZ204G.EXE
• v2.50 (1999-03-01): pk250dos.exe
• Various versions at old-dos.ru
• pk250upd.zip - Upgrades registered 2.04g to 2.50

Software for OS/2

• 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: 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

Links

• Wikipedia: PKZIP
• PKZIP website