MIT has just released its open source Urban Network Analysis software for analysing interdependent aspects of urban development at city level.

There is a link to the MIT description at http://cityform.mit.edu/projects/urban-network-analysis.html with  the video at

{vimeo}44728530{/vimeo}

There is also an article by fastcompany at https://www.fastcompany.com/1778514/mits-free-urban-planning-software-will-help-build-cities-future

This MIT s software acts as a plug-in to ArcGIS which places it firmly in the open source proprietary software camp.The software ias available to downoad from https://bitbucket.org/cityformlab/urban-network-analysis-toolbox/downloads/Urban%20Network%20Analysis%20Toolbox%201.01.zip