Study of methods of nonlinear optimization using computer means. At present there are many systems of optimization programs (including professional ones), but frequently they include various computing algorithms. However just the absence of a uniform approach to the construction of realized methods prevents the comparative analysis of the efficiency of the methods and the obtained results for various classes of problems. In this work the program-methodical system is described. It is based on an optimization dialogue system ODiS, which is used as a methodical computer support of an educational course of methods of optimization on the Department of Applied Mathematics of Mari State University. The presented system consists of four parts.