Maps/Geography links

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 Maps  

ArcGIS Map Viewer
View several different base maps (National Geographic, OpenStreetMap, ESRI maps).

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.

GISsurfer
View several different base maps (National Geographic, OpenStreetMap, ESRI maps). Display coordinates in UTM, USNG, and MGRS formats. Display elevation and magnetic declination of a location.

CalTopo
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.

Perry-Castañeda Library Map Collection
A collection of country and regional maps.

Undersea Feature Names Gazetteer
Seafloor map to view/search for underwater features such as reefs and seamounts.

Country Maps (like browsing a world atlas):

USGS topographic maps:

Free Map Tools
Features include finding the elevation on the map, measure distance/area, and a time zone converter.

OpenStreetMap Compass
Determine compass bearing on the map, including magnetic declination.

osMap
View OpenStreetMap in English for foreign names. Especially useful for non-Latin text.

uMap
Create/edit places and routes using OpenStreetMap data. Add layers and import/export in GPX, KML GeoJSON formats.

David Rumsey Map Collection
A collection of historical maps. View selected maps using Google Earth.

National Park Service Maps
National Park maps.

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.

Natural Earth
Public domain maps in shapefile format.

Overpass Turbo
Filter and extract data from OpenStreetMap. The Wizard feature allows you to easily filter data by using keywords, for example, locate all museums or restaurants for an area.


Apps (Android)*

* Some of the apps might only be available in the Android platform.

Google Maps

OsmAnd
Online/offline maps using OpenStreetMap. Add places, record GPS tracks, measure distance, and display info on the map (such as altitude, speed, GPS status).

Locus Map
Online/offline maps. Add places, record GPS tracks, view maps in WMS/WMTS formats, and import/export in KML/KMZ and GPX formats. Navigate destination using the compass bearing and display the latitude/longitude gridlines on the map.

Avenza Maps
Offline maps in GeoPDF and GeoTIFF formats. View OpenStreetMap online and select an area for offline use. Add placemarks, record GPS tracks, measure distance/area, and export map data in in KML, GPX, and CSV formats. Includes compass and current altitude.

Guru Maps — GPS Route Planner
Online/offline maps. Add places, record GPS tracks, and export in KML/GPX formats. Import in KML/GPX and GeoJSON formats.

Organic Maps
A simple interface using OpenStreetMap for offline maps. Directions and save places.

Magic Earth
Online/offline maps. Includes satellite images and real-time traffic.

Geo Tracker
Easy, simple interface for GPS recording. Export and import in GPX or KML formats.

CalTopo
The app version for the CalTopo website.

GPS Test
GPS settings/status. Displays a map of satellites, speed, altitude, latitudes/longitudes, and the location of the Sun.

GPSTest
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.

Magnetic Declination Compass
Though not actually an app, this web-based compass uses the current location to determine true north, magnetic north, and magnetic declination.

Compass Steel
Compass with a simple interface with no ads.

Get Geo-Coordinates
Find the latitude and longitude of the current location using both GPS and/or the cell phone connection or Wi-Fi.


 Geography

The World Factbook
Provides country/regional information as well as maps.

Earth Point
Convert coordinates in different formats such as UTM and MGRS.

Magnetic-Declination.com
Find the magnetic declination of a location on a map or by searching for a place.

GeoNames