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 formats.
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 present.
has a 45-day free evaluation period. However, in some versions
it continues to work even after this period of time.
addition, extraction from ZIP archives.
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.
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.
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
Decompression of .bz2 and .rar files.
Support for ARC, ARJ, LHA archives if suitable external
programs are installed.
write of ZIP archives to CD/DVD.
of backup jobs.
Integrated FTP upload.
Email ZIP archives.
ZIP file archive format (PKZIP) was originally invented
for MS-DOS in 1989 by Phil Katz and his company PKWare.
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.
8.0 is the last major release to officially support Windows
9.0 adds support of AES encryption for ZIP archives, BZip2-compressed
ZIP archives (extraction only).
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.
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.
11.1 is certified for Windows Vista with Vista theme support,
64-bit Windows support.
11.2 can create LHA archives without external utility. Added
Unicode file name support for ZIP archives.