Different types of base maps are available. Search for physical features such as underwater canyons and seamounts.
GPS Visualizer Draw
Add markers, lines, polygons, import/export in KML and GPX formats, and measure distance/area. Right-click on a place on the map to display the coordinates and the elevation.
Add markers, lines, polygons. Import/export KML, GPX, and GeoJSON formats. Measure distance/area, find the elevation of a location, calculate bearing, and display and search UTM/USNG coordinates.
A collection of country and regional maps.
Geographic MapMaker Interactive
Add layers, such as climate zones, time zones, and plate tectonics.
ArcGIS Map Viewer Charted Territory Map
Map showing the outline (borders) of the countries/territory. Zoom in to display street-level features and shaded relief for higher elevation areas.
Country Maps (like browsing a world atlas):
Download USGS topographic maps in GeoTIFF, Google Earth (KMZ), JPEG, and GeoPDF formats.
Free Map Tools
Features include finding the elevation on the map, measure distance/area, and a time zone converter.
Determine compass bearing on the map, including magnetic declination.
Census data in Shapefile and KML formats.
Create/edit places and routes using OpenStreetMap data. Add layers and import/export in GPX, KML GeoJSON formats.
ArcGIS Overlay Maps
View several different types of maps (National Geographic world map, physical map, USA Topo Maps) in WMTS and KML formats. Note: To view the KML/KMZ format, click the ArcGIS Earth link.
David Rumsey Map Collection
A collection of historical maps. View selected maps using Google Earth.
National Park Service Maps
National Park maps.
Public domain maps in shapefile format.
Filter and extract data from OpenStreetMap. The Wizard feature allows you to easily filter data by using keywords, for example, museum or restaurant.
* While all of these apps work on the Android platform, some of these apps might be available in other platforms such as the iPhone/iPad.
This app should already be installed on an Android device. Download area for offline use.
Online/offline maps using OpenStreetMap. Add places as favorites, track GPS routes, measure distance, and display info on the map (such as altitude, speed, GPS status).
Online/offline maps using OpenStreetMap, view maps in GeoPDF, shapefile, and WMS/WMTS formats. Record, export, and import GPX/KML files. Feature includes access to offline maps at OpenAndroMaps
Online/offline maps using OpenStreetMap. Download countries/regions for offline use in vector format. Export/import KML/GPX files. Crosshair cursor displays coordinates on the map.
View several different types of maps, including OpenStreetMap, and record, export, and import GPX/KML files. Crosshair cursor displays coordinates on the map and displays GPS status. Feature includes access to offline maps at OpenAndroMaps
The app version for the CalTopo website.
Create a georeferenced map from an image or a PDF on the smartphone and display the coordinates, speed, heading, and elevation.
Download offline maps, directions, add places as favorites, and view KML/KMZ files.
Online/offline maps. Includes satellite images and real-time traffic.
Inflight mapping app with offline maps that includes geological and physical features.
GPS settings/status. Displays a map of satellites, speed, altitude, latitudes/longitudes, and the location of the Sun.
Displays the status of navigation satellites in a list and on a map. Add your actual location on a map that will determine the accuracy of the GPS.
Compass & Map
Displays the compass on the map that can be rotated to show heading/bearing.
Measure distance and area.
Find the latitude and longitude of the current location using both GPS and/or the cell phone connection or Wi-Fi.
The World Factbook
Provides country/regional information as well as maps.
Convert coordinates in different formats such as UTM and MGRS.
BBC Country Profiles
Search geographical names.
GEOnet Names Server
U.S. government database of foreign names.
Geographic Names Information System (GNIS)
Search U.S. geographical names from the U.S. Geological Survey.