Postpass – a public OSM PostGIS instance
community.openstreetmap.org/t/postpass-a-public-osm-postgis-instance/128649Ultra
overpass-ultra.usA web based tool for making MapLibre GL maps with data from sources such as Overpass, GeoJSON, GPX, KML, TCX, etc
DE-9IM
en.wikipedia.org/wiki/DE-9IMThe Dimensionally Extended 9-Intersection Model (DE-9IM) is a topologicalmodel and a standard used to describe the spatial relations of two regions