The Semantic Web (Web of data) considers the web as a big knowledge source, evolving from the current web of connected documents to a web of connected data and knowledge. Its knowledge representation (ontologies) allows identifying data unambiguously, to exploit relationships and enable computers to exploit knowledge directly from the web. This representation even allows deducing new knowledge and connections between sources. Based on these technologies, new applications with seemingly unlimited possibilities can be created. Therefore, our activities involve domains of eTourism, eEnergy, eGov, eHealth and eServices.