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System Utilities / File Compression / Zzip 0.36c 1.0
Zzip 0.36c 1.0
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Zzip 0.36c 1.0 Description
A new powerful compression tool for Win9x/Me/NT/2000 and Unix, with source code released under the GPL.
Zzip, a new compression tool still under development, can compress files with a very high compression ratio. Compared to Winzip 7.
A new powerful compression tool for Win9x/Me/NT/2000 and Unix, with source code released under the GPL.
Zzip, a new compression tool still under development, can compress files with a very high compression ratio. Compared to Winzip 7.0, you can gain, at least, 15 %. Zzip has a lot of useful features (like support for file integrity tests, built-in multimedia detection/compression...).
With Zzlib, you can also use Zzip as a library (dll) in one of your program.
Source code of Zzip/Zzlib is released under the GNU LGPL.
Zzip compression algorithm is mainly based on the Burrows-Wheeler Transform method developped by Mike Burrows and David Wheeler. Here are the different steps :
* RLE packing if necessary
* some transformations for text, multimedia and win32 binary files (eol coding, delta-encoding,...)
* Burrows-Wheeler Transformation, it's a suffix sorting (Bentley-Sedgewick ternary sorting with initial bucket sorting)
* MTF like transformation
* arithmetic coding (two groups, ternary sequence & structured model)
Currently Zzip is free (released under the GNU LGPL), here is a list of its features :
- great compression ratio and good decompression speed
- build/extract/test/list archive files
- built-in multimedia detection/compression
- number of files in one operation is only limited by available memory
- support for file attributes and file date/time stamps
- support for file integrity tests (CRC-32 checksums)
- support for win95 long filenames
- self-extracting archive (.exe file)
OS: Windows 2000, Windows 2003
Tags: Z-Zip - Zip Tools - Zip Format - Files Compression - File Manager - File Management - Free File Manager