SketchUp - 3D for Everyone
Modelur - Save time and make well-informed decisions during early stages of urban design.
Lumion - Easily turn your CAD projects into architectural visualization videos and images. Compatible SketchUp and 3D BIM Tools, such as Revit, ArchiCAD and Allplan.
CityEngine - CityEngine is a 3D modeling software application that uses the method of procedural generation to facilitate urban modeling and design on a massive scale.
3D Cityplanner - Urban and real estate development at your fingertips. With the 3D Cityplanner it’s possible to create, visualize, analyze and share 3d plans online.
Blended Cities - Blended Cities is an open-source city generator for Blender.