deepnight.itch.io
Tabletop RPG Map editor II is a map editor by Deepnight Games for Windows, also available as a browser HTML5 version. Maps use generic shapes rather than specific objects. It supports maps generated by One Page Dungeon, diagonal and cavern walls, and raycasted lighting. The project is in an Alpha phase, and the desktop version is recommended for file management. It is offered as pay what you want, including free.