Blended Cities

Blended Cities is an open-source city generator for Blender. It allows to create quickly a large amount of streets and buildings, with various shapes . Blended Cities fights against squared things : curved streets and odd or cylindrical buildings can be created simply, so you can create old towns, not only modern cities.

Blended Cities web page: http://jerome.le.chat.free.fr/index.php/en/city-engine

(source: http://www.girona.cat/shared/admin/docs/3/d/3d-based_simulation.pdf )