Mapsmith

Maps for your table from a seed: a walled town, the country around it, a dungeon, a spaceship, or the inside of a building. Click a number to see what's there and who keeps it. The bar over the map changes it, and the buttons under it save it.

The place's note

Save as picture is free: a PNG of the players' map, no numbers, named with its size in squares so Owlbear Rodeo lines up the grid.

Mapsmith Pro, $6 once on itch: Save for virtual tabletop writes a .dd2vtt with every wall, door, window and light placed. Roll20 imports it as it is; Foundry reads it with the Universal Battlemap Importer module. One key works here and in the Obsidian plugin.

Lost your key?

Keep your campaign in Obsidian? Mapsmith is a free plugin there too, and the map lives in your note: Settings, Community plugins, Browse, search Mapsmith. See it in Obsidian's list.

The seed and settings

The map is drawn from these lines. The same seed always draws the same map; change any word to get another.