Viking is an open source application that allows you to import and edit your Global Positioning System (GPS) points of interest and tracks. It can overlay the points and tracks on your choice of Google Maps, Terraserver, OpenStreetMap, or NASA's BlueMarble map tiles so you can see what you are doing.
Viking's main interface contains a tree describing your layers and their contents on the left side and a map view in the center and right part of the window. Layers that appear at the top of the left tree view are drawn last in the map. Layers displaying tracks and waypoints will always be drawn above layers that show map data regardless of where the track and waypoint layer is in the stacking order. If you do not want to see your tracks or waypoints, you can hide them using the layer tree on the left side of the window.