Organisational centred multi-agent systems (MAS) have proved to be eective to regulate agents' activities. Nevertheless, population and/or environmental changes may lead to a pour fullment of the system's purposes, and therefore, adapting the whole organisation becomes key. This paper presents a MAS simulator devoted to test organisations with self-adaptation capabilities in P2P scenarios. More specically, our simulator implements dierent sharing P2P methods some of them with self-adaptation and so, it can be used as a testbed for comparing them.