Applied Logic Laboratory is a Hungarian R&D SME company established in 1986. Its main research areas include computer science, artificial intelligence, cognitive systems, modelling of systems of high complexity, medical and biological informatics. The company unites expertise in system modelling and design, knowledge engineering, signal processing, neural computing, data analysis and data mining, natural language processing, and decision support. ALL has started its research and development activity in medical informatics in 1988. Among others ALL has contributed to establishing the IT infrastructure of patient-centred new healthcare institutions. It has developed web-based information systems for virtual hospital department which support physicians to work together efficiently, share data, information and knowledge which are accessible at any point or time regardless of where and when the data was recorded. ALL is intensively working on IT application in healthcare that can be used in order to support diagnosing and treatment selection activity on the net.