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efficient freeware zip program like winrar

what would be the most efficient zip program like winrar, but freeware?

thanks
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anushahanna
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anushahanna
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12 Solutions
 
Sean ScissorsProgram Analyst IICommented:
Here is a couple from an article.
http://www.techsupportalert.com/best-free-file-archiver-zip-utility.htm

Here is another highly rated one called ZipGenius.
http://www.zipgenius.com/
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SommerblinkCommented:
I like 7zip.

The only problem is that it doesn't exactly have this nice and bubbly GUI (if thats a concern).
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dbruntonCommented:
From Scissors85 link 7-Zip is the one to pick.  It supports a wide range of formats for unarchiving besides the zip format for archiving.

See http://www.7-zip.org/ for more information.

I've used ZipGenius and there's nothing wrong with it.  I'd still use 7-Zip in preference.
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anushahannaAuthor Commented:
I did a test and 7-zip was not quiet as efficient as winrar. (winrar brought the 90GB file to 8GB but 7-zip was still at 27GB)- because winrar is paid software, does it have some technology that the free ones do not have?
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dbruntonCommented:
Just the algorithms used.

You've got some strange results because if you look at the table on http://www.7-zip.org/ they indicate that 7-zip if using the 7z format compresses better than Winrar.

If you use the zip format in 7-zip then Rar wins by about 25%.
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anushahannaAuthor Commented:
i believe 7z has size limits- i will confirm soon on that..
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_Commented:
I have been using QuickZip for years, and have no complaints.

http://www.quickzip.org/softwares.html
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Aaron TomoskyTechnology ConsultantCommented:
Another vote for 7 zip
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jarrod_williamsCommented:
try the following program.   BestSync 6.0.14  RiseFly Software  

from : http://www.freedownloadmanager.org/downloads/zip_software/
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anushahannaAuthor Commented:
i saw what happened in my test between winrar and 7-zip.. winrar did in 3 hours.. 7-zip wanted 14 hours- then i quit the process... anyone else have experience zipping big files with impressive ratio and also time, with the above tools?
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rdhoore108Commented:
Where I work, we've used WinRAR for a long time (in trial mode). Then my new colleague came and brought 7-zip along. Since then we are happily using 7-zip...

Of course it matters very much what you are compressing. We are mainly compressing ascii log files, and I see no worse performance.

Probably the default compression algorithm differs between 7-zip and WinRAR, and therefore you are seeing big differences in the advantage of WinRAR. By default, 7zip uses LZMA compression. I couldn't figure out what the default is for WinRAR.

Here is some stuff on 7-zip and winrar (also check the comments, they mention some alternatives)::

http://www.online-tech-tips.com/software-reviews/7-zip-vs-winzip-vs-winrar/
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rdhoore108Commented:
This comparison is more scientific:

http://kikizas.net/en/apps.7z.html
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Aaron TomoskyTechnology ConsultantCommented:
When 7zip took 14 hours what format were you using? Can you pick the format or are you locked in? Also for each format there are options for the level of compression that significantly effect performance.
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anushahannaAuthor Commented:
rdhoore108, how would you paraphrase the scientific find in your own layman terms?
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anushahannaAuthor Commented:
aaron - 14 hours for 7z format.

i just saw - yes they have too many options - so to compress a 100 GB file, what factors are most important?
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dbruntonCommented:
Format of the file concerned.   Is it compressible such as text file or highly incompressible such as mp3 or jpeg file.

Size of file concerned.

Speed of compression wanted.  Faster the compression wanted the higher the file size.  The lower the file size wanted the more time this takes.

7zip is hungry in terms of memory usage.  (Don't ask were I got that from.   That popped out of my memory).  That is one drawback in using it.

There are command line options for the use of 7zip but from the looks of your testing you are getting strange results.

7zip versus Winrar
27 Gb versus 8Gb
14 hrs versus 3 hrs

If that is with the same settings for each test on the same file then 7zip is not the correct choice here.
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anushahannaAuthor Commented:
i did a fresh test on a new file. 126.38GB - original

7-Zip in 7z format - 8.73GB but took 15 hours (default settings)
WinRAR      in 3 hours 10.87GB (default settings)

what would you recommend i test next?
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Aaron TomoskyTechnology ConsultantCommented:
That makes more sense. 7zip took longer but got better compression. Soif you want it faster with less compression, just turn the 7zip setting down one. From normal to fast or whatever.
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anushahannaAuthor Commented:
OK - good point- let me try the other 2 softwares also and try 7zip with faster alogithm, and get back to you.
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anushahannaAuthor Commented:
due to system unavailability, i am not able to test yet- will keep your pointers and check later.
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_Commented:
Thank you much.   : )
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