MacGPS Pro 5.1 is the latest version of the program for communicating with a Garmin GPS receiver. It allows users to import background maps from a wide variety of sources, and shows the user’s current location and velocity, GPS Waypoints, Track logs, and Routes. The update stitches adjacent USGS Digital Raster Topo Maps together on a Mac screen, simultaneously shows multiple raster maps in the same Mac window, and locates USGS topo maps by the Quad Name. MacGPS Pro requires Mac OS X 10.2 or later (for Garmin USB connection, Mac OS X 10.3.8 or later), and is priced at US$49.99.