[ENGLISH] Actually one of popular networks to share information are usually peer-to-peer networks where the overlay topology is continuously reshaped. That can affect important properties that affects the efficiency of the nodes, that are part of the network. So for P2P overlay, scale-free networks offer the possibility that as the network becomes very large it will control certain key properties for those type of networks. The objective is provide a tool for testing in a controlled environment, a known network that don't fulfill scale-free characteristics and apply modifications to the network elements to approach to a network that meets it. The result is an application for monitoring the properties and shape of a given overlay network while simple practical strategies is applied in order to modify it to meet certain properties of a scale-free network.