ARJ

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This article is about the compressed file format. For other uses, see ARJ (disambiguation).
Filename extension .arj
Uniform Type Identifier (UTI) public.archive.arj
Developed by Robert K. Jung
Type of format archive format

ARJ (Archived by Robert Jung) is a software tool designed by Robert K. Jung for creating high-efficiency compressed file archives. ARJ is currently on version 2.86 for DOS and 3.20 for Windows and supports 16-bit, 32-bit and 64-bit Intel architectures.[1]

ARJ was one of two mainstream[clarification needed] archivers for DOS and Windows during the early and mid-90s, with PKZIP being its competition. Parts of ARJ were covered by U.S. Patent 5,140,321. Generally ARJ was less popular than PKZIP, but it did enjoy a niche market during the BBS era and in the warez scene. This was largely due to ARJ's creation and handling of multi-volume archives (archives which are split into smaller files which are then suitable for dial-up transfers and floppy distribution) being more robust than PKZIP's.

File format support in other software[edit]

ARJ compressed files with the Filename extension .arj can be unpacked with various tools other than the ARJ software. There exists a free software re-implement of the tool. The software 7-Zip can also unpack .arj files.

See also[edit]

References[edit]

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