Abstract
For social and technical reasons, various information networks have become an important phenomenon, which it is useful to study and formalize. For this purpose we have developed NetSim, a generic software tool for modeling and simulating diverse network structures. We will see how to use this system to simulate and visualize two quite different network types: a preferential attachment model, and a typical social network. We will also present a modeling language we designed to express different network models to be interpreted by the NetSim system. We will show graphical simulation results that demonstrate the operation of the software.