Welcome to the 7-Zip Home!
7-Zip is a file archiver with high compression ratio.
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 4.44 beta (2007-01-20) for Windows:
| Link |
Type |
Windows |
Size |
| Download |
.exe |
32-bit |
858 KB |
| Download |
.msi |
x64 |
1319 KB |
Download links redirect to download pages on SourceForge.net
License
7-Zip is open source software. Most of source code is under GNU LGPL license.
AES code is under BSD LICENSE. unRAR code is under mixed license: GNU LGPL + unRAR restriction. Check
license information here: 7-Zip license.
You can use 7-Zip on any computers, including computers in commercial organizations.
You don't need to register or pay for 7-Zip. But you can make a donation to support further development of 7-Zip.
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
7-Zip works in Windows 98/ME/NT/2000/XP. There is port of command line version
for Linux/Unix.
On 7-Zip's Source Forge Page
you can find forum, bugs report 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.
|
|
PPTminimizer
- Optimize and Compress PowerPoint Presentations by up to 96%.
Free Trial available at:
www.PPTminimizer.com
|
To subscribe for notifications about new versions of 7-Zip,
send a blank email to:
7-Zip-subscribe@topica.com
|
Speed optimizations for LZMA, Deflate, BZip2 and unRAR.
Read about all changes
|
AES-256 encryption for .ZIP archives
Multi-threading mode for compressing to .ZIP archives
|
Small changes in ANSI-C version
|
ISO and NSIS support
Speed optimizations
|
Windows 95 support was improved
|
Speed optimizations
64-bit Windows support
LZH support
CHM support
Multivolume CAB support
Drag and Drop improvements
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