University courses in the field of computing are mostly based on practical training through programming assignments and projects. To prevent plagiarism occurrences, source code similarity detection tools have been used, such as JPlag and Moss. In this paper, we discuss analysis and visualization of results of aforementioned tools using graphs. Gephi tool has been used for graph analysis and visualization, and we developed plugins for processing of JPlag and Moss results. The paper also gives directions for customization of visualization to facilitate identification of potential plagiarism cases.
