Azgaar's Fantasy Map Generator is both for the cartographer nerd, and the lazy map-maker. With one click you can generate a realistic map, procedurally generated based on real features like elevation, sea level, latitude, precipitation and more. You can edit those features to customize your map, or leave it as is. Each map even has states, cities, religions and populations pre-populated based on the climate and topography! I'm going all in on Azgaar's for my current D&D campaign. I can't stop playing with it for hours to make a realistic world in an app that has all the tools I need.