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Is a file archiver with a high compression ratio for ZIP and GZIP formats, which is between 2 to 10% better than its peers, depending on the exact data tested. And 7-Zip boosts its very own 7z archive format that also offers a significantly higher compression ratio than its peers-up to 40% higher! This is mainly because 7-Zip uses , with strong compression settings and dictionary sizes , to slow but vastly improve density. If a zip tool gains its appeal from its ability to efficiently compress files, then 7-Zip proves it has a little bit o’ magic.

7-Zip at a Glance

After you effortlessly download and launch 7-Zip, you'll quickly discover its simple and easy to navigate interface. The main toolbar contains 7-Zip's most used features and there are several menus that allow you to dig deeper within. For example, the Extract button lets you easily browse for or accept the default destination directory for your file, while the View menu contains a Folder History, and the Favorites menu lets you save up to ten folders. 7-Zip also integrates with the Windows Explorer menus, displaying archive files as folders and providing a toolbar with drag-and-drop functions. You can also alternate between a single or dual-pane view.

Product Details

7-Zip offers several features that make it one of the best compression software options around. For example:

• open architecture-The source code uses the GNU LGPL license, while the unRAR code is under a mixed license with GNU LGPL + unRAR restrictions.
• High compression ratio-Using its own 7z format with LZMA and LZMA2 compression, 7-Zip's compression ratio is up to 40% higher than its peers. For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10% better than PKZip and WinZip.
• Strong AES-256 encryption-This includes both password protection of files and encryption of file names.
• Ability to use may compression, conversion, or encryption methods-For example 7-Zip:
  • Supports packing and unpacking for 7z, XZ, BZIP2, GZIP, TAR, ZIP, and WIM.
  • Supports unpacking only for 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.
  • Supports a self-extracting capability for 7z format.
• Integrates with Windows Shell-Using its menu options, you can menu.
• Powerful file manager and command line versions-There's also a plugin for FAR Manager.
• Localizations for 79 languages-This kind of support is why 7-Zip is the world's favorite free compression software.

Pros	Cons
7-Zip is easy to download and use, it opens and compresses most everything, and is has a Windows shell extension.	The interface is a little sparse and so are the instructions, but the program works like a charm anyway.

QuickSpecs

• Version: 9.22
• Date added: March 2, 2013
• Operating systems: Windows

7-Zip is a world famous free archiver with free source code. The utility is compatible with almost all known archive formats. Plus, it has a built-in manager as a convenient shell. Command line control is also provided.

The manager has a function for testing files. When it is activated, the number of files and the total size of the archive (in its original and compressed states) are displayed. It also shows the number of errors found if the file suddenly becomes corrupted. In this case, the user will not be able to open the archive, but you can restore it using, or similar programs. But some zip archives cannot be opened due to bad headers (wrong file encoding). In this case it is better to use or .

The program is very easy to use. It is not necessary to run it to unpack or pack a file - just right-click on the desired file and select the desired action.

7-Zip has already passed the test of time: the developers have been working on improving the utility for more than 15 years. During this time, the archiver has gained wide popularity and has become one of the most useful programs for various platforms.

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Explzh- An excellent free archiver that is incredibly popular. This development by Ponsoftware quickly won the love of users around the world due to its versatility, versatility and efficiency.

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Bandizip is a new free archiver that is compatible with most archive formats that exist today. This tool is distinguished by the presence of a simple multilingual interface, speed and high compression ratio.

7z (7zip) archiver supports a large number of compression formats. In addition to its own format (7z), it can work with ZIP, RAR, CAB, GZIP, BZIP2 and TAR archives. When installed, the program is integrated into the Windows shell, and you can call it with a right-click.

7-Zip- This is a free archiver program in Russian for unpacking or compressing files on Windows. It was developed in 1999, and now it has become one of the leaders among such products. In 2007, in a specialized competition SourceForge Community Choice Awards it received two prestigious awards for best design and best technical design. You can download 7-Zip for free on this page.

The program is designed for Windows and is supported by all its versions, including Windows CE - an operating system for smartphones, laptops and embedded systems. Runs either in graphical form or using the command line.

Features of the 7-Zip archiver

When compressing files in 7-Zip, several threads are used simultaneously, which greatly speeds up this process. So, for example, when archiving to zip format, up to eight streams are used simultaneously. That is why this program is ahead of many of its competitors in terms of file archiving speed. For example, on a computer with a single core processor, the compression speed is almost identical to WinRAR, and on a dual core one it is much higher than that of the latter. You can download 7-Zip in Russian for free from our website.

With 7-Zip, you can archive and unpack files in almost all popular formats: 7z, WIM, TB2, BZIP2, BZ2, GZIP, TBZ, TAR, JAR, GZ, TBZ2, XZ, ZIP and TGZ. In addition, the program easily unpacks (but does not pack) other formats: ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, MBR, ISO, LZH (LHA), LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, XAR, Z (TAZ). By the way, this archiver compresses ZIP and GZIP formats 10% better than WinZip. And the 7z format is 25% better than ZIP, which is already a good advantage.

7-Zip is a free file archiver with a high degree of data compression. Supports multiple compression algorithms and many data formats, including native 7z format with highly efficient LZMA compression algorithm.

7-Zip has been developed since 1999 and is free and open source, most of which is freely distributed under the terms of the GNU Lesser General Public License, with the exception of the unRAR decompressor code, which has limitations.

7-Zip uses multithreading and allows you to use a different number of threads for compression, depending on the algorithm or format. When creating archives in which files can be compressed independently of each other (for example, ZIP), the program can use up to 8 streams simultaneously. For the LZMA compression algorithm, the archiver can use up to 2 streams at the same time. The impossibility of using more of them is explained by the sequential nature of continuous compression. The LZMA2 compression algorithm does not have this disadvantage.

When compressing in 7z format, special filters-normalizers are also used. So, for more optimal compression of 32-bit x86 code, normalizing converters BCJ and BCJ2 are used. 7-Zip also has an optimizing delta converter for some media types, such as uncompressed 24-bit images.

Compression ratio results are highly dependent on the data being compressed. Typically, 7-Zip compresses 4-25% better to 7z than to ZIP.

The main platform is Microsoft Windows (including Microsoft Windows CE), where two versions of the program are available: with a graphical interface and a command line version. The console version has been ported by the developer community to POSIX systems under the general name p7zip. Ported versions for other systems, as well as the original 7-ZIP program, are available on the SourceForge system website (as of November 7, 2010, the program has been downloaded from the site more than 109 million times).

7-Zip is the winner of the 2007 Community Choice Awards for Best Project and Best Technical Design.

Key Features of 7-Zip

• Supported algorithms:

• Supported formats: