Sustainable urban development is extremely important, if not imperative, for city managers and policy makers. Nowadays, the use of Information and Communication Technologies announces assertive, sensitive and economic solutions. This research aims to introduce smart city indicators based on critical and updated diagrammatic digital analysis regarding issues such as mobility, transportation, environment, housing, governance and security faced with concepts as innovation, sustainability and others. In order to achieve this goal, it is offered an original and relational mapping of indicators created from information collected in different sources such as texts by well-known authors such as Guimarães [1], Greenfield [2], Weiss [3] institutional websites such as Brazilian Smart Cities Network [4], Urban Systems [5] publications and legal regulations such as NBR ISO 37122 [6]. Thus, this relational mapping will highlight graphically and visually the relations between the types of technologies available and how they have been used and applied. In a nutshell, we offer a diagrammatic approach oriented to create a useful indicator analysis guide based on available technologies, populations’ needs and, more importantly, hope to provide better understanding about smart cities rankings and indicator regarding the well-being of people interacting with urban infrastructure, in special with mobility and urban devices.