[English translation of title: Application of Information Technology in Knowledge Management] One of the main efforts in intelligent systems development is focused on knowledge and information management supported by Information Technology (IT) tools and techniques. This book represents a sample of such effort. The overall aim of this book is to provide guidelines to develop and apply IT tools for smart processing of knowledge in systems functioning in different domains. It presents ideas, concepts, and illustrative case studies that can be explored and possibly applied, as well as the complexities and challenges of modern knowledge management issues. It also encourages its reader to become aware of the multifaceted interdisciplinary character of such issues. The principle of this book is that its reader will leave it with a heightened ability to think about developing and applying IT based approaches in evaluating and supporting intelligent knowledge management systems in real life based environment.