Stamen tiles in popular map engines

google.js

// replace "toner" here with "terrain" or "watercolor"
var layer = "toner";
var map = new google.maps.Map(document.getElementById("element_id"), {
    center: new google.maps.LatLng(37.7, -122.4),
    zoom: 12,
    mapTypeId: layer,
    mapTypeControlOptions: {
        mapTypeIds: [layer]
    }
});
map.mapTypes.set(layer, new google.maps.StamenMapType(layer));

leaflet.js

// replace "toner" here with "terrain" or "watercolor"
var layer = new L.StamenTileLayer("toner");
var map = new L.Map("element_id", {
    center: new L.LatLng(37.7, -122.4),
    zoom: 12
});
map.addLayer(layer);

modestmaps.js

// replace "toner" here with "terrain" or "watercolor"
var layer = new MM.StamenTileLayer("toner");
var map = new MM.Map("element_id", layer);
map.setCenterZoom(new MM.Location(37.7, -122.4), 12);

openlayers.js

// replace "toner" here with "terrain" or "watercolor"
var layer = new OpenLayers.Layer.Stamen("toner");
var map = new OpenLayers.Map("element_id");
map.addLayer(layer);