MacRadarScope is the only known available Air Traffic Control Client for the Macintosh platform. The original author, Ben Supnik has ceased development on the software, but has given permission for it to be publicy hosted and made available to anyone who desires it.
Compatible with the X-Plane flight server, and IVAO networks, the software runs on PPC and Intel Macs.
Note URL was changed for getting rid of the .sit format.