openSYDE by STW is framework and tool set for the implementation, analysis, maintenance and documentation of functions and programs in control systems for mobile working machines. openSYDE stands out with its openness: freely usable interfaces to programs like requirement management tools or the integration of 3rd party control units. With openSYDE efficient realization of applications that require functional safety is guaranteed. In addition, openSYDE offers a latest design, user-friendly graphical interface and shines with comprehensiveness from variable definition to support.