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.
Suicidator City Generator - Suicidator City Generator (SCG) is a Blender3D script.
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.
SketchUp - 3D for Everyone
Blended Cities - Blended Cities is an open-source city generator for Blender.
SkyScraper - Triveni Digital develops systems that monitor, manage, and distribute digital TV data and metadata for broadcast, cable, telco, satellite, and IPTV.