7-Zip 9.04 beta

7-Zip is a file archiver with a high compression ratio and is open source software. Most of the source code is under the GNU LGPL license. The unRAR code is under a mixed license: GNU LGPL + unRAR restrictions. Check license information here: 7-Zip license.

You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip. But you can make a donation to support further development of 7-Zip.

What's new:

  • 7-Zip now can update solid .7z archives.
  • 7-Zip now supports LZMA2 compression method.
  • 7-Zip now supports XZ archives.
  • 7-Zip now can unpack NTFS, FAT, VHD and MBR archives.
  • 7-Zip now can unpack GZip, BZip2, LZMA, XZ and TAR archives from stdin.
  • 7-Zip now can open/copy/compress disk images (like \\.\c:) from \\.\ folder.
  • 7-Zip File Manager now doesn't use temp files to open nested archives stored without compression.
  • New -scrc switch to calculate total CRC-32 during extracting / testing.
  • New -scc{WIN|DOS|UTF-8} switch to specify charset for input/output (default = DOS).
  • Some bugs were fixed.

Download: 7-Zip 9.04 beta
Screenshot: >> Click here <<

This is BETA software!, please use caution when installing it on your system

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16 Comments

Commenting is disabled on this article.

i love 7 Zip great little app... Although I must admit I'm an even bigger fan of Power Archive 2009 soon to be 2010.

Geez, the interface looks crappy. I don't think it's changed for years. The icons look like a kindergarten kid made them.

I will stick with WinZip. I did buy it because it is worth it.

Lord Ba'al said,
The program is fine, he should just drop those butt-ugly toolbar icons.

Indeed, or at least make it skinnable.

I once emailed the author that a .rar archive I had would not be decompressed through 7zip, and he ignored me. Nevertheless, I continue to use 7z as my decompressor of choice, but always carry a unrar.exe.

DJ-Light said,
what happened to the others 5 versions?


That seems a marketing trick, many products use today...
Crazy version jumping or even skipping whole major numbers.
Firefox, Chrome, 7-Zip...

But to comment on the new 7-Zip version:
LZMA2 is able to scale with multicores and to save uncompressible files in uncompressed form instead of making them bigger.
Also the solid archive updating and the unpacking of subarchives without unpacking the main archive is a big thing...

Im running the new version on Windows 7 64Bit on a dualcore CPU and that thing is ultrafast!

The only bad thing is the 7-Zip installer...
If you don't delete all files in the folder manually, it doesn't update the files.
Seen this while i upgraded from Vista 32bit to Win7 64bit and the installer has not replaced the executables and dlls...
I have not checked it with the 32bit exe installer, but the 64bit MSI installer is really bad.

7-zip 4.x was released in 2004.

Now he's starting to use that versioning scheme again, after diverting from it.

That is - 7-zip 9.x for 2009.