Fractal Terrains 3

Publisher Blub:

FT3 is powerful and robust stand-alone world generation software. It lets you generate random worlds and fine-tune an infinite number of details for the ultimate in realism. FT3 gives you control of all the elements: coloration, meteor craters, sea level, land-mass size, height range, world circumference, water courses, and much more. You can import and modify real Earth data, generate spectacular new worlds at random, or build your own terra firma literally from the ground up, then just sculpt the land and add water.