Jeremy McDermond, NH6Z, undertook writing a native application for Mac OS® and it is now available on the Mac App Store.
Buster is not a product of NW Digital Radio and support requests should go directly to Jeremy.
Jeremy has stated that the source code will be made publicly available via GitHub and he is open to collaboration for future versions.
It works with a ThumbDV™ on a Mac OS® USB port and with AMBEserver™, locally or over a network. AMBEserver can support either the ThumbDV™ or PiDV™.
This application has been in beta for several months and is both stable and feature rich. It takes advantage of several Mac OS® specific services. For example, it will use Apple Core Location service to determine your current location and reports it via D-STAR. It also provides mapping of remote stations who are reporting position.
There is one known issue: The way that Mac OS® powers USB ports during its sleep state may cause communication issues with the the ThumbDV™ upon wake up. Most casual users will not experience this condition. The condition is resolved by removing and re-inserting the ThumbDV™ into the USB port. Linux and Microsoft Windows sleep state does not exhibit this condition. Since FTDI USB drivers are not written by NW Digital Radio, buyers of the ThumbDV™ should consider this when making a purchase decision.