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 formats.
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 present.

From version 6.0 until version 9.0, registered users could download the newest versions of the software, enter their original registration information, and thereby obtain a free upgrade. As of version 10.0 this upgrade scheme was discontinued. WinZip is available in standard and professional versions. However, the ability of Windows XP and Windows Vista to open .zip files (as "compressed folders") has reduced sales.

Features:

* 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 usedin

earlier versions. The implementation, using Brian Gladman's code, was FIPS-197 certified, on March 27, 2003.[4]
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

Works With: Windows 2000, Windows XP (SP3 Too) Server 2003/2008 and Vista (SP1 too)


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