JAR (ARJ Software)

JAR is a file archiving and compression utility, and associated file format. It was developed by ARJ Software, as the successor to ARJ. It is not related to the Java archive JAR format.

Identification
Based on the file command's database, JAR files either begin with the ASCII string, or have bytes   at file offset 14.

Links

 * JAR website
 * Wikipedia: JAR (software)