Wednesday, March 16, 2016

7-Zip 15.14 

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

7-Zip 15.14 (2015-12-31) for Windows:
Type Windows Size
.exe 32-bit x86 1 MB
.exe 64-bit x64 1 MB
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: 7-Zip license.

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 7z format with LZMA and LZMA2 compression
    Supported formats:
        Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
        Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, 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 87 languages

7-Zip works in Windows 10 / 8 / 7 / Vista / XP / 2012 / 2008 / 2003 / 2000 / NT. There is a port of the command line version to Linux/Unix.

On 7-Zip's SourceForge Page you can find a forum, bug reports, and feature request systems.
Compression ratio

We compared 7-Zip with WinRAR 5.20.

FILE SETS: Mozilla Firefox 34.0.5 for Windows and Google Earth 6.2.2.6613 for Windows.
Archiver Mozilla Firefox Google Earth
65 files
85 280 391 bytes 483 files
110 700 519 bytes
Compressed size Ratio Compressed size Ratio
7-Zip 9.35
-mx 39 357 375 100% 15 964 369 100%
WinRAR 5.20
-m5 -s -ma5 -md128m 41 789 543 106% 17 035 432 107%

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.

http://www.7-zip.org/

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