Free Download 7-Zip File Archiver With High Compression Ratio

Free Download 7-Zip File Archiver With High Compression Ratio

7-Zip is a rock-solid for Windows file archival with a high-compression ratio. It is the premier archival for the LZMA compression format (a.k.a. 7z). Indeed, the 7-zip web site is also the home of the LZMA SDK (Software Development Kit ).

7-zip download

Compared to WinRAR 3.50, CAB ARC 5.1, win zip 10.0 beta (maximum-PP Md), win zip 10.0 beta (maximum-portable) this software have high-compression rate and it saves more space, system requirements are also minimal Compared to WinRAR 3.50, CAB ARC 5.1, win zip 10.0 Beta (maximum-PP Md.), win zip 10.0 Beta (maximum-portable) this software have high-compression rate and it saves more space, system requirements are also minimal

Version 4.42 of 7-zip has been a workhorse for over a year. Version 4.42 of 7-zip has been a workhorse for over a year. The just-released 4.47 (beta) offers these improvements: The just-released 4.47 (beta) offers these improvements:

* New fast compression mode for Deflate method in Zip and GZip.

* New “Compress shared files” option in GUI and -ssw switch.

* Some bugs were fixed.

* New localization: Norwegian Nynorsk.

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 a compression ratio that is 2-10 % better than the 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

7 zip compression ratio

7-Zip works in Windows 98/ME/NT/2000/XP. There is a port of the command line version to Linux/Unix.

On 7-Zip’s Source Forge Page you can find a forum, bug reports, and feature request systems.

Compression ratio

We compared 7-Zip with some of the leading archivers.

FILE SETS: Mozilla Firefox 1.0.7 for Windows and Google Earth 3.0.0616 for Windows after full installation.

Archiver Mozilla Firefox Google Earth
161 files
15,684,168 bytes
115 files
23,530,652 bytes
Compressed size Ratio Compressed size Ratio
7-Zip 4.23 (7z format) 4621135 100% 6109183 100%
WinRAR 3.50 5021556 109% 6824892 112%
CABARC 5.1 5131393 111% 7434325 122%
WinZip 10.0 beta (maximum-PPMd) 5277118 114% 8200708 134%
7-Zip 4.23 (zip format) 6222627 135% 8909446 146%
WinZip 10.0 beta (maximum-portable) 6448666 140% 9153898 150%

Compression ratio results are very dependent upon the data used for the tests. Usually, 7-Zip compression ratio is 30-70% better than zip format. And 7-Zip compresses to zip format 2-10% better than most of other zip compatible programs.

Free Download 7-Zip 4.42 for Windows (2006-05-14):

Link Type Windows Size
Download .exe 32-bit 818 KB
Download .msi x64 1238 KB

Download 7-Zip 4.56 beta for Windows (2007-10-24):

Link Type Windows Size
Download .exe 32-bit 841 KB
Download .msi x64 1105 KB

Note: The download links above redirect you to download pages on SourceForge.net

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