Versions tested:1.00
Optimal parameters:cmid.cfg
Links:http://www.cs.fit.ed...
Authors:Matt Mahoney
Algorithms:CM, X86, LZP
Notable peformances:-

zpaq

ZPAQ is a proposed open standard for highly compressed data, currently under development. When completed, all versions will remain compatible, even as new compression algorithms are developed. ZPAQ compressed files and archives contain a description of the compression algorithm, allowing older programs to extract files produced by newer programs.
the program website 2009, March 11

 

(Have info that should be added here? E-mail.)


The program does not store directory tree, therefore TAR is used.

Disqualified (why) configurations (with qualification ratings)
VerRatingCPRDPRS.E.R.E.RatioC. kB/sD. kB/s
cmax.cfg
1.0010810111422653.757106106
cmid.cfg
1.0014813915749443.465292293
cmin.cfg
1.0026282413302.41929202253

Version info

1.00, tar: yes, mode: 32-bit, crc32: 7aa8ec31, decoder: 21 kB, tested: 2010 Apr 23
compression: zpaq.exe <args> <cfile> <src>
decompression: unzpaq1.exe x <cfile>