Windows PC products for integrating GPS data with both maps and aerial photos. ExpertGPS lets you see GPS data plotted on topo maps and aerial photos side-by-side in Windows, or connect your GPS to your laptop to see where you are on the topo or photo. PanTerra is a database of 1.6 million US waypoints and waypoint data for all other countries, along with software tools to quickly find the waypoints you need. Low price, high capability.