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.
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 compresses to 7z format 30-70% better than to zip format. And 7-Zip compresses to zip format 2-10% better than most of other zip compatible programs.
Download 7-Zip 4.42 (2006-05-14) for Windows:
| Link | Type | Windows | Size |
|---|---|---|---|
| Download | .exe | 32-bit | 818 KB |
| Download | .msi | x64 | 1238 KB |
Download 7-Zip 4.56 beta (2007-10-24) for Windows:
| Link | Type | Windows | Size |
|---|---|---|---|
| Download | .exe | 32-bit | 841 KB |
| Download | .msi | x64 | 1105 KB |
The download links above redirect you to download pages on SourceForge.net
Authors bio is coming up shortly.
hiii its not installing its givig error that
it does not support ur processor what to do?????
i m having a good processor
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