.ARC was used on MS-DOS systems as well. (Though if the format was ever popular there, it was rare by the time I was old enough to remember.) Phil Katz of PKZ

.ARC was used on MS-DOS systems as well. (Though if the format was ever popular there, it was rare by the time I was old enough to remember.) Phil Katz of PKZIP fame wrote PKARC and PKXARC - both for MS-DOS. http://en.wikipedia.org/wiki/ARC_%28file_format%29 http://en.wikipedia.org/wiki/ARC_%28file_format%29