This 3D brush terrain generator is worth taking a look at as a much simpler Though more limited) alternative to VUE
Nifty isometric dungeon black and white semi pen style mapper program
A 3D city viewer for the Medieval city generator
A colorful random village map generator
A random house/mansion maker that you can toggle a map view of.
A random town generator. The results can be loaded into the city viewer made by the same person
Another top down 2D pen style map generator
A 2D top down pen drawn style random mapping generator