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WinZip is a proprietary file archiver and compressor for Microsoft Windows,
developed by WinZip Computing (formerly Nico Mak Computing). It natively uses
the PKZIP format but also has various levels of support for other archive
WinZip was created in the early 1990s as a shareware GUI front-end for PKZIP.
Sometime around 1996 the creators of WinZip incorporated compression code from
the Info-ZIP project, thus eliminating the need for the PKZIP executable to be
Creation, addition, extraction from ZIP archives.
Configurable Microsoft Windows Shell integration.
128- and 256-bit key AES encryption. This has replaced the less secure PKZIP 2.0
encryption method used in earlier versions. The implementation, using Brian
Gladman's code, was FIPS-197 certified, on March 27, 2003.
Version 9 also implemented a 64-bit version of the PKZIP file format,
eliminating both the maximum limit of 65,535 members for single archive and the
4-gibibyte size limit on either the archive and each member file.
Support of the bzip2 (9.0), PPMd (10.0), WavPack (11.0), allowing smaller
archives at the cost of a potential increase in compression and extraction times
(especially when using PPMd).
Decompression of .bz2 and .rar files.
Support for ARC, ARJ, LHA archives if suitable external programs are installed.
Direct write of ZIP archives to CD/DVD
Automation of backup jobs
Integrated FTP upload
Email ZIP archives
WinZip prior to 11.2 does not support Unicode characters in filenames.
Attempting to add these files to an archive results in the error message
"Warning: Could not open for reading: ..."
Unicode support to ensure international characters are displayed for filenames
in a Zip file
Integrated support to create, open and extract LHA and LZH archives
The ZIP file archive format (PKZIP) was originally invented for MS-DOS in 1989
by Phil Katz and his company PKWare.
Because PKWare did not protect the name by trademark and algorithm of the
process by patent, and was slow to realize that the Windows operating systems
would eventually dominate the OS market, Nico Mak (then employed by Mansfield
Software Group, Inc) eventually seized the opportunity and released the WinZip
application for Microsoft Windows.
Allegedly some of the algorithms used by PKWARE were originally copied from a
program called ARC, written by Thom Henderson of System Enhancement Associates.
This may explain why PKWARE was not able to patent PKZIP (see discussion in
topic on Phil_Katz).
WinZip 8.0 is the last major release to officially support Windows 95.
WinZip 9.0 adds support of AES encryption for ZIP archives, BZip2-compressed ZIP
archives (extraction only).
WinZip 10 adds support of creating and extracting PPMD-compressed ZIP archives.
It is the last major release to officially support Windows 98, ME. WinZip Pro is
added in this release, which adds automation and task scheduling features.
WinZip 11 adds support of creating and extracting WavPack-compressed ZIP
archives. Installer will still install to Windows 98, ME, but not officially
supported. WinZip Pro adds Passive FTP support, FTP transfers, e-mail
notification option for Job Wizard, custom jobs selection, full-size image
viewer when opening archive.
WinZip 11.1 is certified for Windows Vista with Vista theme support, 64-bit
WinZip 11.2 can create LHA archives without external utility. Added Unicode file
name support for ZIP archives.
WinZip 12.0 adds support of JPEG, LZMA compression for ZIP files; .ISO, .IMG,
7-Zip archive extractions. Added encryption policies, integrated image thumbnail
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