ARJ

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 and 3.20 for Microsoft Windows and supports 16-bit, 32-bit and 64-bit Intel architectures.[1]

This article is about the compressed file format. For other uses, see ARJ (disambiguation).
Archived by Robert Jung
Filename extension
.arj
Uniform Type Identifier (UTI)public.archive.arj
Developed byRobert K. Jung
Latest release
2.86
2012-05-01
Type of formatarchive format
Open format?Yes (patent expired)

ARJ was one of many file compression utilities for MS-DOS and Microsoft Windows during the early and mid-1990s. Parts of ARJ were covered by U.S. Patent 5,140,321 (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, Zipeg, and WinRAR can also unpack .arj files.[2] For macOS, standalone utilities, such as DeArj and UnArjMac, are available.

See also

References
  1. "ARJ Software News". 2014-06-07. Retrieved 2019-04-09.
  2. "File Type: ARJ Compressed File Archive". Archived from the original on 2016-03-04. Retrieved 2019-04-08.
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