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 ).
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 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.
We compared 7-Zip with some of the leading archivers.
|Archiver||Mozilla Firefox||Google Earth|
|Compressed size||Ratio||Compressed size||Ratio|
|7-Zip 4.23 (7z format)||4621135||100%||6109183||100%|
|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):
Download 7-Zip 4.56 beta for Windows (2007-10-24):
Note: The download links above redirect you to download pages on SourceForge.net