OpenStreetMap – https://wiki.openstreetmap.org/wiki/RU:О_проекте
A Web Map from Scratch – https://observablehq.com/@mourner/simple-web-map
WordPress ACF Field for OpenStreetMap – https://wordpress.org/plugins/acf-openstreetmap-field/
Leaflet Map – https://wordpress.org/plugins/leaflet-map/ – https://bozdoz.com/projects/leaflet-map
Extensions for Leaflet Map – https://wordpress.org/plugins/extensions-leaflet-map/ – https://leafext.de/en/
Карты на стол: как выбрать поставщика географических карт для мобильного приложения – https://habr.com/ru/company/umbrellaitcom/blog/425737/