7-Zip is a file archiver with high compression ratio.

The main features of 7-Zip:
High compression ratio in new 7z format with LZMA compression
7-Zip is free software distributed under the GNU LGPL
Supported formats: 7z, ZIP, CAB, RAR, ARJ, LZH, GZIP, BZIP2, Z, TAR, CPIO, RPM and DEB
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 60 languages

7-Zip 4.31 was released.
date: 2005-12-04

QUOTE
What's new after 7-Zip 4.30 beta:

- Small changes
- New localization: Basque


What's new after 7-Zip 4.23:

- Speed optimizations in LZMA maximum/ultra compressing.
- LZH format support (extracting only)
- 7-Zip can unpack CHM/HXS (MS HTML HELP) archives
- 7-Zip can unpack multivolume CAB archives
- LZMA now supports word size up to 273
- 7-Zip now reduces dictionary size for LZMA, if you compress files
smaller than specified dictionary size.
- 7-Zip now can use large memory pages:
GUI: 7-Zip File Manager / Options / Settings / Use large memory
pages.
Command line version: -slp switch.
This feature allows to increase speed of compressing.
But 7-Zip can make some pause at starting of compressing for
allocating large pages.
Also Task Manager doesn't show real memory usage of program, if
7-Zip uses large pages.
This feature works only on Windows 2003 / XP x64 / Vista.
Also you must have administrator's rights for your system.
Recommended size of RAM: 1 GB or more.
To install this feature you must run 7-Zip File Manager at least
once,
close it and reboot system.
- Now 7-Zip deletes files to the Recycle Bin by default.
Shift+Delete deletes files permanently.
- 7-Zip now supports standard selection mode in the file list
- 7-Zip now supports right-click Drag and Drop in Explorer
- Command line version now supports short file names (like
FILENA~1.TXT)
- Files 7zFMn.exe, 7zGn.exe, 7-zipn, 7za.exe, 7zC.sfx were removed
from 7-zip package
- 7-Zip now uses uncompressed SFX: 7z.sfx
- Sfx modules 7z.sfx and 7zCon.sfx now use msvcrt.dll
- "Duplicate filename" collision problem between names with
ligatures was fixed.
- Some bugs were fixed
- New localizations: Basque, Ido, Tatarish


Страница загрузки/Page of loading 7-Zip for 32-bit Windows - 821 KB


Страница загрузки/Page of loading 7-Zip for 64-bit Windows x64 - 1104 KB


Страница загрузки/Page of loading 7-Zip for 64-bit Windows IA64 - 1394 KB