Helpful websites based on OpenStreetMap
Shows a heatmap based on the distance a motorcar has to drive to reach the center of the map
Calulates distance between two points on earth and shows the shortest geodetic line between them
Allows to find a place on earth by name and shows latitude and longitude of it
Allows to draw lines of constant geodetic distance ("circles") around points.
Displays items of a GeoRSS-Feed as on overlay over OSM tiles.
Interactive gallery of different map renderings based on OSM data.