Technologies Hosted on this system       AquaLog is a portable question-answering system which takes queries expressed in natural language and an ontology as input and returns answers drawn from one or more semantic webs. AquaLog presents an elegant solution in which different technologies are combined together, including NLP, ontology-based reasoning, machine learning and user modelling. URL: http://kmi.open.ac.uk/projects/akt/aqualog/         Magpie adds an ontology based semantic layer onto web pages on-the-fly as they are browsed. Magpie automatically highlights key items of interest, and for each highlighted term it provides a set of 'services' (e.g. contact details, current projects, related people) when you right-click on the item. URL: http://kmi.open.ac.uk/projects/magpie