The software package is designed to analyze the operation of mechanical systems, including complex kinematics, large movements, rigid and deformable structural elements, hydraulic, pneumatic and electrical systems, control systems and other components.The EULER software package can be used in the design, development, testing and fine-tuning of various products, in scientific and applied research, as well as in the learning process. The program complex can be used by engineers, researchers and students of various branches of science and industry. The use of the software allows to obtain reliable information about the behavior and power loads in the created products already at the early stages of design. With the help of mathematical models, it is possible to determine the performance characteristics of new systems, optimize their parameters and conduct a comparative analysis of various design options. The software complex EULER also allows to carry out quickly researches of the emergency situations arising in the course of operation of the existing systems. As a result, the development time is reduced, significantly reduces the amount of finishing tests, increases the quality of products and reduces the cost of their creation.