Maps - the best Map-related and Mapping sites

Maps are flat representations of our round Earth. A typical map shows human-created features (such as countries and cities) and/or natural geography features such as vegetation cover. Additionally, any other sort of spacial data can be represented on a map as well (such as population density). Below is a list of the top websites relating to maps, from sites offering driving directions, paper maps for purchase, GIS (geographic information systems) software and more.