The DELOS Network intends to conduct a joint program of activities (JPA) aimed at integrating and coordinating the ongoing research activities of the major European teams working in Digital Libraries (DL)-related areas with the goal of developing the next generation of DL technologies. The objective is to (i) define unifying and comprehensive theories and frameworks over the life-cycle of DL information, (ii) build interoperable multimodal/multilingual services and integrated content management ranging from the personal to the global for the specialist and general population.