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7-Zip is a free program for file archiving. The application is distributed under the GNU LGPL. It is a tough competition for the very popular WinRAR and WinZip. After installation, an integration of the coating system, the program creates entries in the context menu.
7-Zip is an open source file archiver with the high compression ratio predominantly for the Microsoft Windows operating system. It operates either as a command line program or with a graphical user interface. It also features integration with the Windows shell environment. 7-Zip is free software, developed by Igor Pavlov and distributed under the GNU LGPL license. For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip.

Features:

• 7-Zip now can create 7z, xz and zip archives with 1536 MB dictionary for LZMA/LZMA2.
• 7-Zip File Manager now can operate with alternate file streams at NTFS volumes via “File / Alternate Streams” menu command.
• 7-Zip now can extract .zipx (WinZip) archives that use xz compression.
• new optional “section size” parameter for BCJ2 filter for compression ratio improving. Example: -mf=BCJ2:d9M, if largest executable section in files is smaller than 9 MB.
• Speed optimizations for BCJ2 filter and SHA-1 and SHA-256 calculation.
• Console version now uses stderr stream for error messages.
• Console version now shows names of processed files only in progress line by default.
• new -bb[0-3] switch to set output log level. -bb1 shows names of processed files in log.
• new -bs[o|e|p][0|1|2] switch to set stream for output messages; o: output, e: error, p: progress line; 0: disable, 1: stdout, 2: stderr.
• new -bt switch to show execution time statistics.
• new -myx[0-9] switch to set level of file analysis.
• new -mmtf- switch to set single thread mode for filters.
• The BUG was fixed: 7-Zip didn’t restore NTFS permissions for folders during extracting from WIM archives.
• The BUG was fixed: The command line version: if the command “rn” (Rename) was called with more than one pair of paths, 7-Zip used only first rename pair.
•  Some bugs were fixed

Screenshots

7-Zip supports 7z formats, ZIP, RAR, GZIP, BZIP2, TAR, CAB, ISO, ARJ, LZH, CHM, Z, CPIO, RPM, DEB and NSIS. However, it reaches the highest compression rate with 7z format. With the 7z format You can even create self-extracting archives.

The tool integrates into the Windows context menu and as a plug-in for FAR Manager. In addition to the graphical user interface has 7-Zip a powerful command line version.

7-Zip is an open source file archiver with the high compression ratio predominantly for the Microsoft Windows operating system. It Operates Either as a command line program or with a graphical user interface. It also features integration with the Windows shell environment
The freeware speaks 69 languages. You can make the surface in German, by selecting the language file under "Tools | Select Language" | Options.

Features:

• Free software distributed under the GNU LGPL 
• High compression packing of 7z format
• Custom file manager 
• Plugin for FAR file manager 
• Functional command line 
• Locations (translation) for 79 languages
• Integrates with Windows shell (context menu) 

Supported formats: 

• Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM 
• Unpacking: ARJ, CAB, CHM, CPIO, CRAMFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR and Z 
• Encryption AES-256 (7zip and zip) 
• Self-extracting archives (SFX) for 7z format 

Screenshots