7-Zip 4.58 Alpha 1

7-Zip is a file archiver with the high compression ratio. The program supports 7z, ZIP, CAB, RAR, ARJ, LZH, CHM, GZIP, BZIP2, Z, TAR, CPIO, RPM and DEB formats. Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format.

The main features of 7-Zip

  • High compression ratio in new 7z format with LZMA compression
  • Supported formats:
    • Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
    • Unpacking only: RAR, CAB, ISO, ARJ, LZH, CHM, Z, CPIO, RPM, DEB and NSIS
  • For ZIP and GZIP formats 7-Zip provides compression ratio that is 2-10 % better than ratio provided by PKZip and WinZip
  • Self-extracting capability for 7z format
  • Integration with Windows Shell
  • Powerful File Manager
  • Powerful command line version
  • Plugin for FAR Manager
  • Localizations for 63 languages
What's New:
  • Small improvements in ZIP/Deflate compression.
  • 7-Zip was compiled by new version of C++ compiler.
Download: 7-Zip 4.58 Alpha 1
Screenshot: >> Click here <<
View: Version History
Link: Home Page

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15 Comments

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It's not even on the website's front page yet, so I think I'll wait for it to at least go beta. I use 7-zip too much to risk some severe bugs here.

Actually, especially when speaking all-in-all, WinRAR gives this one a fight. Individually looking at features like compression ratios and price, it's nice, but looking all-in-all, WinRAR comes with tons more features, especially in SFX archive creation, and file manager completeness.

it's an awesome program, but still lacks some basics. like specifying a folder to extract when making a SFX archive. this is easily done in Winrar.

It's not a bad program, but call me interested when I can customize the program icons and file icons as easily as with WinRar.

OK, so spit it out. What's wrong with the VC 2008 compiler?

Many software and game developers would like to hear you, since it's the most common compiler line on Windows.

It's not fully compatible with "old" operating systems. (Vista ain't compatible to anything, though.)
I'm a VC2003 coder and do know that every new compiler series takes at least two years to be stable...

good program but im going to hold off on this since it's a alpha and the final release (v4.57) just came out not long ago