Versions tested: 2009/5.00b2
Optimal parameters: -
Links: http://powerarchiver...
Authors: Igor Pavlov, Jean-loup Gailly, Mark Adler, ConeXware
Algorithms: LZ+ARI, LZ+HUF
Notable peformances: -


Superior ZIP Support

PowerArchiver offers superior ZIP format support compared to other archivers. Here are the highlights:

7-Zip Compression

7-Zip is an advanced compression format featured in PowerArchiver 2009. It is an open source format, providing an open architecture and high compression ratio. 7-Zip outperforms ZIP, ACE and even RAR in many tests. However, 7-Zip's greatest strength is that it is not controlled by any organization or individual, but by an open source LGPL project to which anyone can contribute. More information on 7-Zip and its superior compression can be found at

PowerArchiver 2009 introduces a new Transparent Update feature for 7-Zip archives, which allows you to quickly add or remove files even if the archive is 'Solid.'

the program website April 2, 2009.


For our tests we use the 'PowerArchiver Command Line' PACL version.

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

For ZIP configuration, the extraction files were: paext.exe+unrar3.dll. If the unrar3.dll was not in the same directory, the program fails. For 7z configuration we add 7z.dll. For CAB, we use paext.exe+unrar3.dll+cabinet.dll. For 7z program fails to produce any file decompressing Qualifying2. Apparently the program doesn't correctly restore directory tree, because it asks permission to overwrite a file during decompression. Hence all modes fail decompressing Application1.

Disqualified (why) configurations (with qualification ratings)
Ver Rating CPR DPR S.E. R.E. Ratio C. kB/s D. kB/s
2009/5.00b2 verify error (q2)
2009/5.00b2 verify error (app1)
2009/5.00b2 verify error (app1)

Version info

2009/5.00b2, tar: no, mode: 32-bit, crc32: 4787130, decoder: 350 kB, tested: 2010 Apr 22
compression: pacomp.exe -a -r <args> <src>
decompression: paext.exe <cfile>