The PoliVisu Toolbox is changing the way collaborative urban policy-making is done by supporting cities (with limited resources) to make effective, informed, data-driven decisions. A suite of data processing and visualisation tools coupled with a structured and tailorable methodology for introducing open (geo) data into the policy-making lifecycle helps cities overcome barriers to big data use and enables them to leverage the benefits of data analytics to build stakeholder engagement. This data-driven approach gives everyone in the policy value-chain the opportunity to gain a wider…