Drawing graphs in mathematics is not always easy, especially with a text editor such as Word or others. But sometimes, we can also search for applications that can display the graph of a given mathematical function. The evolution of computing and technology has enabled applications of this type to emerge as the case of Descartes. It can graphically replay functions of hyperbole, parabola, and more. It is possible to save the file to read for later use. The GUI is very well done and allows an easy handling. Many other functions are available, and since it is a freeware, you just have to download it to discover them.