File type: ARJ Compressed File
File Extension ARJ
The ARJ file extension is used by the ARJ compression utility to reference the compressed archives generated by the application. ARJ is basically an acronym for Archived by Robert Jung in obvious reference to its developer. This compression tool first made its way into the IT market during the Disk Operating System days up to the earlier versions of the Microsoft Windows Operating System environment. With the inception of the more advanced Graphical User Interface (GUI) based Microsoft Windows 95, the ARJ32 version of the compression tool was introduced. This 32-bit console version remained very popular until the Microsoft Windows 2000 platform. This compression tool was primarily noted for its creation of highly efficient compressed archive files that support the 16- and 32-bit computing architecture of the Intel processor. ARJ became one of the only two mainstream archiving utilities for the MS-DOS and Microsoft Windows Operating System platforms in the middle of the 1990s. PKZIP compression utility was the main competitor of the software during that era.
Open ARJ File
Category: Compressed Archive
File format: Open-Source
Open with Windows: ARJ, ARJ32, Zipeg
Open with Linux: ARJ for Linux
Some components of the ARJ software supported by the ARJ file extension are covered under the 5,140,321 U.S. Patent. Although generally less popular compared to PKZIP, it had a substantial niche in the computer market especially for BBS users up to the warez era. The preference for the use of the ARJ format file is largely attributed to the application's ability to create and handle multiple archive volumes by splitting huge files into smaller chunks making it suitable for dial-up connections as well as software distribution via floppy disks. It also has proven to be more powerful in terms of compression capability than PKZIP.
The main limitation of the ARJ compression tool is its lack of support for a graphical user interface remaining mainly command line based despite the introduction of GUI based Operating System platforms. The application responsible for generating the ARJ file extension supports the use of long filenames, data damage protection, files version management, and ANSI display handler sequences among others.