Surprised to find this on HN this morning! I'm Director of Engineering at UrbanFootprint (<a href="https://urbanfootprint.com/" rel="nofollow">https://urbanfootprint.com/</a>), the company featured in the Fast Company article. We provide data and tools for urban planners to assess and compare the impacts of land use and transportation decisions.<p>A basic use case is a city updating its General Plan, which would start with a forecast of how much population growth is anticipated / needs to be accommodated. A planner then needs to assess where new residents will live, work, shop, and play. Perhaps even more essential, how are people going to travel between all of these activities? Will the new growth be auto-dependent, transit-focused, walkable? Is any of the existing or planned development in hazard areas such as flood of wildfire? What are the energy and water use impacts of the plans?<p>We’re using Python and Postgres/PostGIS on the backend to answer these questions and a React SPA to serve it up and make it interactive in a browser.<p>Also, if you happen to live in California, UrbanFootprint is available for free to your city through our California Civic Program (<a href="http://info.urbanfootprint.com/california-civic-program" rel="nofollow">http://info.urbanfootprint.com/california-civic-program</a>) so feel free to nudge them to get in touch ;)