Hello city planners, the idea of open source software is very interesting, but my experience leaves much to be passed directly from ArcGis to QGis and such, because they are structurally different.
My project of urban planning is based on a model similar to SimCity, with software GRASS and QGIS with an interface in PHP with a database based on PostgreSQL / PostGIS. I'm doing a lot of research and I'm experimenting with different techniques, but there are few examples, it seems to me to surf the scientific encyclopedias, but only in rare cases return interfaces similar to the legendary SimCity, clear and understandable. Someone is following this path. See you soon!