Computational geometry has practical use in geographical information systems (GIS). Even in a small country like Slovenia this field covers large amounts of geometric data and, therefore, efficient algorithms are required. Many of local developers and users of GIS systems, who are aware of the problems, choose us for practical advices or collaboration. Our solutions are embedded into software for insertion, storage and changing of land cadastre data. We have also performed studies of data distribution for Surveying and Mapping Authority of the Republic of Slovenia. Final goal is complete electronic distribution of spatial data included in their databases. Constraint-based geometric modelling represents the most intuitive way of modelling, where the user creates a model by defining the relations between geometric models instead of using absolute coordinates. Usage of principles of constraint-based geometric modelling is found in CAD/CAM systems, in learning systems for automatic theorem proving and other fields. Representation of sights and characteristics of Maribor joined with characteristics of other central-european cultural centres Bratislava, Graz and Prague, which was developed in the European project Virtual Heart of Central Europe, shows high standard of information technology in this region and represents an important tool for promotion of Maribor and Slovenia. Results of our research projects are published in recognized international journals and, therefore, help others recognize the potential and improve the reputation of Slovenia. We also believe, that modules for triangulation and trapezoidation of polygons, which have been embedded into the software-package of the well recognized software development company Autodesk, are a proof of the quality for more than just us. Results of our research in the field of surface flattening will be applicable in shoe and textile industry by new products design. Our systems are flexible, therefore they can be upgraded and adapted to new needs. Fundamentals for creating photo realistic animations, used in pedagogic process and marketing, have been made with the development of new methods for modelling natural objects, such as trees, clouds, etc. The mentioned scientifically significant achievements produced effects in Slovenia, too. Computer-aided detection of ovarian follicles is used at the Teaching Hospital of Maribor to improve the reliability of "in vitro" fertilisation (Prof. Dr. Veljko Vlaisavljević). The same hospital improved their orthopaedic knee surgery by computerised prototype model which resulted from our joint efforts in the SimBio projct of the European 5th Framework (Dr. Tomaž Tomažič). At the same time, our programme-scheme supported research generated new knowledge which was partially involved in under- and postgraduate studies at the Faculty of EE and CS, and at the College of Nursing, both of the University of Maribor. The most important are conceptual learning/teaching tools for the fields of computer science and nursing. Infrastucture for building portals is tested on portal of several Slovenian Municipalities (Maribor, Koper, Postojna, Piran...) and on portal of Univesity of Maribor. Clickstream analysis and response times of portal is used for our current research work on contetn recommendation project. we have build also a distance learning portal, which is used at University of Maribor, University of Koper, University of Trieste and several private educational institutions.