Townscaper is more like a toy than a tool, and it's not out yet, even in early access. Still, it would be cool to use something like this with tabletop RPGs:
https://store.steampowered.com/app/1291340/Townscaper/
There recently has been a free city map created that showed up on itch.io, it allows you to make cities of different sizes, include or not include regions or key parts of a city.
They also allow you to change how the map looks with different colors, as well as actually editing the placement of...