https://yellowafterlife.itch.io/dnd-to-gml
DnD to GML converter by YellowAfterlife
Convert DnD blocks in GMS1 projects to equivalent GML
to gmldndconverter
https://osm2cdr.com/formats/gml/
Convert OpenStreetMap to GML (Geography Markup Language) | OSM2CDR
Download professional GML vector maps from OpenStreetMap data. INSPIRE, Enterprise GIS, WFS services. Export in minutes.
to gmlmarkup languageconvertopenstreetmapgeography