Development of Semantic Web applications: state of art and critical review

Ontologies have recently received popularity in the area of knowledge management and knowledge sharing, especially after the evolution of the Semantic Web and its supporting technologies. An ontology defines the terms and concepts (meaning) used to describe and represent an area of knowledge. The aim of this paper is to identify the basics notions of ontologies and ontology management tools specially protégé that are freely available and the process development of semantic web notions. The Semantic Web vision have lead to a number of standards such as OWL and Web Semantic Mining. While these standards provide a technical infrastructure, developers have little guidance on how to build real-world Semantic Web applications. We will start by some definitions of Semantic Web and the common points with Web Mining. We will illustrate how these notions can be put into practice using the modern Semantic Web development tool Protege, and indicate future possibilities;