Urbanization is putting a lot of pressure on city planners who need to navigate the many needs that different stakeholder groups have in terms of access to services, infrastructure, and other amenities in urban areas. This, combined with ambitions for more sustainable living environments, often puts planners and practitioners in challenging situations where they need to navigate complex combinations of needs and priorities with limited or little information available for them to use. Given the complexity and the push for evidence-based policymaking, we are witnessing a more or less steady growth of Decision Support Tools and Systems - often referred with the acronym DST and DSS - meant to assist practitioners in planning and designing our cities and living environments. This report serves as a summary of our efforts in inventorying and summarizing currently available Decision Support Tools, providing a valuable resource for those engaged in the dynamic field of urban planning and governance.