G7ToWin is a Windows (9X and higher) application designed to transfer data between Garmin, Lowrance/Eagle and Magellan GPS receivers and a PC. (http://gpsinformation.net/main/g7to-mag.htm has more details)
The application lets you download, edit, save and upload waypoints, tracks, routes and events (Lowrance / Eagle units only) and, for those units which support it, download a copy of the current display as a Windows bitmap. Works perfectly under 0.9.48.
The ability to load and save in a number of popular formats used by various mapping apps also make it a very useful data consolidation and translation tool.