DigiCULT: Technology Watch Report 3 - "Core Technologies for the Cultural and Scientific Heritage Sector", January 2005. As in previous TWRs, this volume examines six core technologies. Those covered here underlie a wide range of future applications, and include: Open Source Software, Natural Language Processing, Information Retrieval technologies, Location Based Systems (especially GIS and GPS), Visualisation of Data, and Telepresence, Haptics and Robotics