Since its inception in 1997, the EuropeanConferenceon Researchand Advanced Technology for Digital Libraries (ECDL) has come a long way, creating a strong interdisciplinarycommunityofresearchersandpractitionersinthe?eldofdigital libraries. We are proud to present the proceedings of ECDL 2005, the ninth conference in this series, which, following Pisa (1997), Heraklion (1998), Paris (1999), Lisbon (2000), Darmstadt (2001), Rome (2002), Trondheim (2003), and Bath (2004), took place on September 18 23, 2005 in Vienna, Austria. ECDL 2005 featured separate calls for paper and poster submissions,...