The third issue of ST-OPEN covers a diverse range of topics, including psychology, arts, architecture, technology, anthropology, environmental science, education, linguistics, history, and sports. With 15 published articles, this issue delves into a wide range of subjects, such as the psychological factors affecting the performance of young female volleyball players, the well-being of actors, and Ottoman religious architecture in Croatia. Other articles analyze the relationship between public investments in science and scientific indicators at Croatian universities, investigate online safety awareness among Croatian school students, and evaluate the purpose and results of a Croatian language contest. This issue also examines the relationship between two reverends, presents a system for automatic car detection and classification in traffic, explores changes in wedding customs in Gornja Poljica, and provides insight into sports live text commentary. The third issue of ST-OPEN truly offers a diverse and thought-provoking collection of articles for readers interested in various fields of study. Also, this issue has been published with the financial support of the Ministry of Science and Education of the Republic of Croatia.