GeoNames is a geographical database available and accessible through different web services and is available for download as a freeware under creative commons attributions license. These days GeoNames serves up to 30 million web service request each day also the data is available free through a number of webservices and daily database export. This graphical database contains more than 10 million geographical names and has more than 8 million features in which almost 3 million populated places and over 5 and a half million alternative names.
Offers geographical data like: name of places in various languages, elevation, population integrated. The latitude and longitude are presented in World Geodetic System 1984. This system has a intuitive wiki interface allowing users to manually edit, correct and add new names.
GeoNames features for online users
Users can search for names with the fulltextsearch function
browse big mountains, large cities, or the highest mountain
browse names on map and reveal or hide feature classes and codes
export names as CSV files or PNG images
for registered users add new names to the database
for registered users enables geotagging of names
GeoNames offers free support for GeoNames and is provided by the community. The GeoName team is available for commercial support and consulting