Welcome to the 7-Zip Home!
7-Zip is a file archiver with a high compression ratio.
Download 7-Zip 4.65 (2009-02-03) for Windows:
| Link |
Type |
Windows |
Size |
|
.exe |
32-bit |
1 MB |
|
.msi |
x64 |
1 MB |
Download 7-Zip 9.10 beta (2009-12-22) for Windows:
| Link |
Type |
Windows |
Size |
|
.exe |
32-bit |
1 MB |
|
.msi |
x64 |
1 MB |
The download links above redirect you to download pages on SourceForge.net
License
7-Zip 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: .
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.
The main features of 7-Zip
- High compression ratio in new with LZMA compression
- Supported formats:
- Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
- Unpacking only: ARJ, CAB, CHM, CPIO, DEB, DMG, HFS, ISO, LZH, LZMA, MSI, NSIS, RAR, RPM, UDF, WIM, XAR and Z.
- For ZIP and GZIP formats, 7-Zip provides a compression ratio that
is 2-10 % better than the ratio provided by PKZip and WinZip
- Strong AES-256 encryption in 7z and ZIP formats
- Self-extracting capability for 7z format
- Integration with Windows Shell
- Powerful File Manager
- Powerful command line version
- Plugin for FAR Manager
- Localizations for 74 languages
![7-Zip]()
7-Zip works in Windows 7 / Vista / XP / 2008 / 2003 / 2000 / NT / ME / 98.
There is a port of the command line version to Linux/Unix.
On
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:
1.0.7 for Windows
and
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.
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