.B64 File Open With January 15, 2023 by ujmnhytgbffdec .B64 File Type - Base64 MIME-Encoded FileIn Windows .B64 File Open WithSmith Micro StuffIt DeluxeCorel WinZipESTsoft ALZipGhisler Total CommanderIn Mac .B64 File Open WithSmith Micro StuffIt Deluxe Mac 16