1)   MultiMode 4.6.0
MultiMode allows you to decode and transmit morse code (CW), RTTY, FAX, SSTV, SITOR-B, NAVTEX, PACKET, ACARS, PSK31, ALE, and many other modes on your Macintosh, without any extra hardware.
radio, amateur, rtty, fax, cw, morse, code, sstv, acars, ACARS,

 2)   SeaTTY 2.0
A program to receive weather reports, navigational warnings and weather charts transmitted on longwave and shortwave bands in RTTY, NAVTEX, HF-FAX (WEFAX), GMDSS DSC and NWR-SAME modes. Only receiver and computer with a sound card are necessary.
RTTY, NAVTEX, HF-FAX, WEFAX, NWR SAME, NOAA, GMDSS, DSC, weather, weatherfax,