ARJ (Archived by Robert Jung) is a software tool designed in 1991 by Robert K. Jung for creating high-efficiency
compressed file archives. ARJ is currently on version 2.86 for
MS-DOS
MS-DOS ( ; acronym for Microsoft Disk Operating System, also known as Microsoft DOS) is an operating system for x86-based personal computers mostly developed by Microsoft. Collectively, MS-DOS, its rebranding as IBM PC DOS, and a few op ...
and 3.20 for
Microsoft Windows
Windows is a Product lining, product line of Proprietary software, proprietary graphical user interface, graphical operating systems developed and marketed by Microsoft. It is grouped into families and subfamilies that cater to particular sec ...
and supports 16-bit, 32-bit and 64-bit
Intel
Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, and Delaware General Corporation Law, incorporated in Delaware. Intel designs, manufactures, and sells computer compo ...
architectures.
ARJ was one of many file compression utilities for
MS-DOS
MS-DOS ( ; acronym for Microsoft Disk Operating System, also known as Microsoft DOS) is an operating system for x86-based personal computers mostly developed by Microsoft. Collectively, MS-DOS, its rebranding as IBM PC DOS, and a few op ...
and
Microsoft Windows
Windows is a Product lining, product line of Proprietary software, proprietary graphical user interface, graphical operating systems developed and marketed by Microsoft. It is grouped into families and subfamilies that cater to particular sec ...
during the early and mid-1990s. Parts of ARJ were covered by (expired). ARJ is well-documented and includes over 150 command line switches.
File format support in other software
ARJ archives can be unpacked with various tools other than the ARJ software. There exists a free software re-implementation of the tool. A number of software utilities, including
7-Zip
7-Zip is a free and open-source file archiver, a utility used to place groups of files within compressed containers known as "archives". It is developed by Igor Pavlov and was first released in 1999. 7-Zip has its own Archive file, archive forma ...
,
Zipeg
Zipeg is an open source free software that extracts files from a wide range of compressed archive formats. Zipeg works under Mac OS X and Windows. It is best known for its file preview ability. It is incapable of compressing files, although it ...
, and
WinRAR
WinRAR is a trialware file archiver utility, developed by Eugene Roshal of win.rar GmbH. It can create and view archives in RAR or ZIP file formats, and unpack numerous archive file formats. To enable the user to test the integrity of archive ...
can also unpack .arj files.
For macOS, standalone utilities, such as DeArj and UnArjMac, are available.
See also
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List of archive formats
This is a list of file formats used by file archiver, archivers and data compression, compressors used to create Archive file, archive files.
Archive formats by purpose
Archive formats are used for backups, mobility, and archiving. Many archive ...
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Comparison of file archivers
The following tables compare general and technical information for a number of file archivers. Please see the individual products' articles for further information. They are neither all-inclusive nor are some entries necessarily up to date. Unless ...
References
External links
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Archive formats
File archivers
Windows compression software
Data compression software
Data compression
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