Structure computation can be carried out in the very early steps of architectural design thanks to the generalization of the use of computers. So, architects can be interested by specific computing tools dedicated to mechanical simulations in design process, especially using interactivity. Researches on these kinds of tools are developed by the ARIAM-LAREA team in the Ecole Nationale Supérieure diArchitecture de Paris La Villette, using graphic statics with a dynamic geometry software, finite element method and tensile structure software. The specificities of such tools are presented through historical examples and students projects.