By default, all software supports multiple file extensions. FO3 Archive supports at least 1 different file extensions. The basic files that FO3 Archive supports are .BSA. However, not all of the extensions listed on the list are always used to save the effects of work in FO3 Archive. Very often, files with such extensions are used as source data files used by FO3 Archive.
FO3 Archive can be used to convert file formats between the file extensions listed below. You can open a file with one of the file extensions below via FO3 Archive and try to save it in another file format, also supported by FO3 Archive.