This book constitutes the thoroughly refereed post-proceedings of the 7th International Workshop on Engineering Societies in the Agents World, ESAW 2006, held in Dublin, Ireland, September 6-8, 2006.

The 22 revised full papers were carefully reviewed and selected for inclusion in the book. The papers are organized in topical sections on agent oriented system development, methodologies for agent societies, deliberative agents and social aspect, agent oriented simulation, adaptive systems, cordination, negotiation, protocols, and agents, networks and ambient intelligence.