Black Cat Systems has released a beta version of MultiMode, bringing it to version 5.0.0a1. MultiMode is a short wave and ham radio message transmitter/decoder. The newest beta release features MT-63 and GMDSS support. According to Black Cat Systems:
Development version 5.0.0a1 of MultiMode OSX has been released.
MultiMode is an application which allows your Macintosh to decode and transmit several different modes of non-voice communication often heard on shortwave and ham radio.
It is the only program of its kind for the Macintosh, rivaling commercial packages for the PC platform costing hundreds of dollars. It is ideal for amateur radio operators, shortwave radio listeners, and other radio enthusiasts. MultiMode is localized for for Dutch, French, German, Italian, and Spanish, in addition to English.
This update to MultiMode incorporates many new feature, including the addition of MT-63 and GMDSS modes, and the ability to save raw decoded bits to a file for further analysis.
You can find more information about the MultiMode update at the Black Cat Systems Web site. The update is free for registered users, while the full version is available for US$59.00.