Open Source

7-Zip is a Free software/open source file archiver designed originally for Microsoft Windows, and later made available to other computer operating systems. In the form of p7zip, the command-line versi... More

Project Details

AUDIENCE : developers
system administrator : DEVELOPMENT STATUS : production
LICENSE : gnu lesser general public license (lgpl)
OPERATING SYSTEM : windows 2000
windows 2003 : windows 95 : windows 98 : windows nt : windows xp : PROGRAMMING LANGUAGE : c++

Attribution :

Information obtained from users, and repositories like FLOSSmole, Wikipedia, Apache, Codehaus, Tigris and several others. Please inform us of any errors, objections or omissions. You can find our terms of service here.
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Recent 7-zip activity



very simple interface, fast and powerful archiver, 2-10% better compression ratio for ZIP format (compared to Winzip and PKzip), many formats supported.

0 Vote(s)

7-Zip Is Very Powerful

7-Zip is very powerful.

0 Vote(s)

The Rescue To The The RAR Format Disease

I really love this application, the rescue to the f**king RAR format.

0 Vote(s)


I'm using it instead of Winrar for a long time now... Very very good open-source software !

0 Vote(s)


i completely reinstalled winxp on an old desktop i have at home -- i didn't have any backup disks of the free software that was previously installed so i lost my winzip app.

i downloaded 7-zip from sourceforge (i think)... i have since installed it on every machine that doesn't have a winzip installation..

why pay for a tool like winzip, when you can get something like it for free?

it's a wise investment.

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How does 7zip work for really large files?

I'm looking to compress a bunch of large files/folders (in the 30-40 Gb range). Anyone have any experience with this?

Opening sevenzip (.7z) files on the mac?

Can't seem to unzip these files on the Mac (using Leopard) and i don't have parallels/Fusion. Any ideas on how I can get this done?

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