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 3.2 for Windows and supports 16-bit and 32-bit Intel architectures.

ARJ http://www.arjsoftware.com/ was one of two mainstream archivers for DOS and Windows during the early and mid-90s, with PKZIP being its competition. Parts of ARJ were covered by . 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.

In recent times, other alternatives to the ZIP archive, such as RAR or 7zip have surpassed ARJ in market share; the lack of an official graphical version may have contributed to ARJ's decline.

See also

• JAR, an archiver by the same author
• List of archive formats
• List of file archivers
• Comparison of file archivers

External links

• ARJ Software Inc. (proprietary version)
• Open Source version of the ARJ archiver

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