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The following tables compare general and technical information for a number of file archivers . Please see the individual products' articles for further information. This article is not all-inclusive or necessarily up-to-date. Unless otherwise specified in footnotes, comparisons are based on the stable versions without any add-ons, extensions or external programs.

General information

Basic general information about the archivers: creator/company, licence/price etc.

Operating system support

The operating systems the archivers can run on without emulation or compatibility layer.

Notes:

  1. ^   There is a special 64-bit version for Windows x64 Edition also available.
  2. ^   The Unix-like system port is known as p7zip. p7zip also is provided by FreeDOS.
  3. ^   As of version 9.05-alpha, a Windows Mobile version has been released by the author
  4. ^   The programs for other platforms are called Unace, do not have the same GUI, and can only perform decompression.
  5. ^   The programs for other platforms are called RAR.
  6. ^   This program also has a POSIX version available.
  7. ^   Beezer works on BeOS and ZETA platforms only.
  8. ^   Version 1.3 works on Linux, FreeBSD and MacOS X

Archiver features

Information about what common archiver features are implemented natively on Windows (without third-party add-ons).

Notes:

  1. ^   Application is only for decompression.
  2. ^   GNU tar calls the external programs gzip and bzip2 to perform compression; these external programs usually come with systems that contain GNU tar.
  3. ^   Allows adding a variable amount of redundancy for much better error recovery. See also RAR (file format).
  4. ^   BitZipper uses various methods to extract data from damaged files.
  5. ^   Extracting/adding file and/or directory names into archive in either UTF-7, UTF-8 or UTF-16/UCS-2 encoding to support single file/directory name which contains characters from different languages. More recent versions of the zip file format have support for Unicode filenames.
  6. ^   In WinRAR 3.60, when opening 7-Zip archives which contains Unicode file/directory names, they will not be displayed correctly. There will be no problem extracting them, however.
  7. ^   Does support Unicode names, but not under the default (initial) option settings: the user must tick "Use OEM conversion for filenames" under "General" on the "Miscellaneous" tab in the Configuration dialog to enable Unicode name support. Full support for Unicode files names by default is supported only for 7-Zip and RAR archive formats.
  8. ^   Commandline batch compression is available only for ZIP and ALZ formats.
  9. ^   UTF-8 support was completed in release 2.5. On Unix system the support is full, while on Windows system, due to limitation of the Windows shell environment, double-character encoded characters cannot currently be displayed in filenames of archived objects, and those chars are replaced by jolly character. Optionally extended characters can be set to be always replaced by jolly "?" character to avoid possible issues between archive's and system's character encodings..
  10. ^   Commandline batch compression and expansion requires free add-on software downloaded from the WinZip website.
  11. ^   Peazip supports file encryption and file name encryption, although only in certain types of archives, including its own Pea format, 7-zip, zip and Arc.

Archive format support

Reading

Information about what archive formats the archivers can read. External links lead to information about support in future versions of the archiver or extensions that provide such functionality.

Notes:

  1. ^   Used to, but no longer does, due to technical and legal issues. More info
  2. ^   GNU tar calls external programs (like compress, gzip or bzip2 or any other programs working with abstract streams and supporting the "-d" option) to perform (un)compression, and allowing you to implement your own filters. These external programs may be shipped with your Operating System.
  3. ^   GNU tar let you to implement your own filters, allowing you to use others compression program (p7zip, ...) and others filters (GPG, ...).
  4. ^   Starting from version 11.
  5. ^   Requires external program. More info
  6. ^   ALZip also reads: alz, ace, arc, arj, b64, bh, bhx, bin (hex files), bin (CD images), bz2, cab, ear, enc, gz, ha, ice, iso, jar, lcd, lha, lzh, mim, pak, rar, tar, tgz, uue, uu, war, xxe, z, zip, zoo, 7z, and 001
  7. ^   Archive Utility itself is unable to open ISO files, but Disk Utility, which also comes with Mac OS X, is able to mount them as virtual disks.
  8. ^   As in most applications of this type, latest modification to ZIP standards (i.e. new PPMd compression modes) may be not immediately supported as they are introduced by WinZip or PKZip teams. Support to ZIP standards is one of the widest available in free applications (i.e. full support to Deflate64 compression, AE encryption, decryption of PKZip's AES etc...)
  9. ^   Requires external programs.
  10. ^   Requires external program.
  11. ^   Only partial support for reading proprietary SITX format.

Writing

Information about what archive formats the archivers can write and create. External links lead to information about support in future versions of the archiver or extensions that provide such functionality.

Notes:

  1. ^   GNU tar calls the external programs gzip and bzip2 to perform compression; these external programs usually come with systems that contain GNU tar.
  2. ^   Requires rar.exe from WinRAR.
  3. ^   Requires external program. More info
  4. ^   Requires Ace32.exe from WinAce.
  5. ^   The Extractor and XAD are not included in this list because they only expand archives.
  6. ^   ALZip can also write to the following formats: BH, JAR, and LZH
  7. ^   Requires external program.
  8. ^   Updating archives is not supported.
  9. ^   Requires external program.
  10. ^  Stuffit supported file formats
  11. ^   Ark is only front-end and requires appropriate command-line programs installed. Programs like bzip2, gzip, tar, zip usually come with systems that contain Ark. For writing RAR format is required commercial program rar.
  12. ^   Xarchiver is only front-end and requires appropriate command-line programs installed. Programs like bzip2, gzip, tar, zip usually come with systems that contain Xarchiver. For writing RAR format is required commercial program rar.
  13. ^   File-Roller is only front-end and requires appropriate command-line programs installed. Programs like bzip2, gzip, tar, zip usually come with systems that contain File-Roller. For writing RAR format is required commercial program rar.

Compression comparison

File compressor and archivers vary in terms of compression ratio and the time it takes to process data. Various benchmark sites attempt to evaluate the differences.

Open benchmarks

Benchmarks that are open and transparent:

Closed benchmarks

Benchmarks that use secret test data and arbitrary selection of compression software:

Uncommon archive format support

Some archivers support file extraction from .msi and .iso formats as well. These include WinRAR, PowerArchiver, ALZip, IZArc, and 7-Zip.

PeaZip has full support for various LPAQ and PAQ formats,

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