tangogps is an easy to use, fast, and lightweight mapping application
for use with or without GPS. By default, tangoGPS uses map data
from the Openstreetmap project. Additionally, a variety of other
repositories can be easily added. The maps are downloaded and cached
for offline use while you drag or zoom the map. Furthermore, you can
conveniently pre-cache areas with tangoGPS.
If connected to a GPS, your current position and track are shown
on the map, and you can log positional data for further processing,
e.g. for geocoding photos or uploading streets to Openstreetmap.