Connectsim (http://www.lag.ensieg.inpg.fr/connect/simulator.php ) is a shared platform having as main goal the validation of the fundamental principles developed in the CONNECT project. It integrates agent's models, communication media including their limitations, heterogeneous network, and all the variants of the multi-agent control strategies. Besides the models and simulation engine, the simulator is complemented with an interactive graphical interface which is used to visualise and interpret the state of the multi-agent control system in one direction and to send high or low-level controls to the agents. The validation scenario is a real-size application complex enough to enforce the pertinence of our results. It will be further used as an open research tool for various applications in the field of multi-agents networked systems.