{
    "OpenStreetMap": {
        "terms": "https://operations.osmfoundation.org/policies/tiles/",
        "variants": [
            "DE",
            "Mapnik",
            "France",
            "HOT"
        ]
    },
    "OpenTopoMap": {
        "terms": "https://opentopomap.org/about"
    },
    "Stadia": {
        "dependency": "whitelist",
        "terms": "https://stadiamaps.com/terms-of-service/",
        "variants": [
            "Alidade Smooth",
            "Alidade Smooth Dark",
            "Outdoors",
            "OSM Bright",
            "Stamen Toner",
            "Stamen Toner Lite",
            "Stamen Terrain",
            "Stamen Watercolor"
        ]
    },
    "Thunderforest": {
        "dependency": "apikey",
        "terms": "https://www.thunderforest.com/terms/",
        "variants": [
            "OpenCycleMap",
            "Transport",
            "Transport Dark",
            "SpinalMap",
            "Landscape",
            "Outdoors",
            "Pioneer",
            "MobileAtlas",
            "Neighbourhood"
        ]
    },
    "MapBox": {
        "dependency": "accesstoken",
        "terms": "https://www.mapbox.com/legal/tos/"
    },
    "CartoDB": {
        "terms": "https://carto.com/legal/",
        "variants": [
            "Positron",
            "DarkMatter",
            "Voyager"
        ]
    },
    "MapTiler": {
        "dependency": "apikey",
        "terms": "https://www.maptiler.com/cloud/terms/",
        "variants": [
            "Basic",
            "Bright",
            "Pastel",
            "Positron",
            "Hybrid",
            "Streets",
            "Toner",
            "Topo",
            "Voyager"
        ]
    }
}