R3GIS develops GreenSpaces, the state-of-the-art solution for urban green inventory and management. Scalable from individual professionals to large cities or enterprises with hundreds of users, GreenSpaces not only allows efficient management but provides also tools for the calculation of ecosystem services of green areas, for estimation of water needs of trees, for engagement of citizens, and for the reduction of the ecological footprint of maintenance activities. R3GIS represents greehill (digital tree twins), Handheld (rugged mobile devices) and ArboTag (tree identification systems).