This paper describes a developed semi-automatic software platform for the harmonization of the informatics curricula at all levels of education. The applied algorithms for matching ontologies are described in detail, as well as the principle of mapping informatics curricula to ontological models. The model of the selected informatics teacher education curriculum from the Republic of Serbia was created and compared to the model of the reference informatics teacher education curriculum using a software platform. The analysis of the results includes a comparison with the data obtained for other possible pairs of the created input ontological models (the secondary school ACM K12 model and the reference model, the secondary school model and the model of the selected curriculum). The research presented in this paper indicates that it is necessary to consider the improvement of teacher education curriculum as well as the application of new matching techniques.