Paper Title
Study and Representation of Different Intelligent Tutoring Systems

The present article is concerned first with defining the notions of intelligent tutoring systems (ITS). Then, it presents the main components of these systems. Then, it deals with analyzing the different ITS which appear in the different sources of information and knowledge of several sectors. It should be noted that the directory of ITS cited is not complete, since the choice is based on the most famous ITS, as well as the most used in different fields. Finally, the article ends with a comparison of these ITS in order to determine the similarities and differences between them, to end with a summary of all the interesting points of this article. Keywords - Education, Learning Technologies, Intelligent Tutoring System, Artificial Intelligence