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Allows you to find coordinates with a place name search. Licensing: Geonet Names Server (GNS) Name search: U.S. National Geospatial-Intelligence Agency (NGA) maintains a comprehensive database of non-U.S. place data. The Libre Map Project: The purpose of the project is to aggregate and make digital maps and related GIS data available for free.
Beyond names of places in various languages, data stored include latitude, longitude, elevation, population, administrative subdivision and postal codes. All coordinates use the World Geodetic System 1984 . Those data are accessible free of charge through a number of Web services and a daily database export. [4]
These databases typically contain IP address data, which may be used in firewalls, ad servers, routing, mail systems, websites, and other automated systems where a geolocation may be useful. An alternative to hosting and querying a database is to obtain the country code for a given IP address through a DNSBL-style lookup from a remote server.
The Open Location Code (OLC) is a geocode based on a system of regular grids for identifying an area anywhere on the Earth. [1] It was developed at Google's Zürich engineering office, [2] and released late October 2014. [3] Location codes created by the OLC system are referred to as "plus codes".
Centamap – launched in 1999, Centamap is built using data from the Hong Kong Government; GeoInfo Map [1] – a geospatial information service provided by the Hong Kong Special Administrative Region (HKSAR) Government.
Copernix.io is a geographical search engine allowing users to search places and information from Wikipedia on a map. Users can leave the search bar empty to see all pages within an area or type a query to get subject specific information. Some useful examples can be found at: Copernix examples and about ; The main search page is at: Copernix.io
There are also mixed systems, using a syntactical partition, where for example the first part (code prefix) is a name-code and the other part (code suffix) is a grid-code. Example: Mapcode entrance to the elevator of the Eiffel Tower in Paris is FR-4J.Q2 , where FR is the name-code [ 9 ] and 4J.Q2 is the grid-code.
OpenStreetMap (abbreviated OSM) is a free, open map database updated and maintained by a community of volunteers via open collaboration. [4] Contributors collect data from surveys, trace from aerial photo imagery or satellite imagery, and import from other freely licensed geodata sources.