Active and Programmable NetworksThis volume contains the proceedings of the 7th International Working Conference on Active and Programmable Networks (IWAN 2005) that was held during November 2123, 2005, in Sophia Antipolis, Cote d Azur, France, jointly organized by Hitachi Europe and INRIA. IWAN 2005 took place against a backdrop of questions about the viability and cessity of a conference that deals with an area perceived by many as having run its full course. The Organizing