OpTaliX is a comprehensive program for computer-aided design of optical systems, thin film multilayer coatings, and illumination systems. It provides powerful features to conceptualize, design, optimize, analyze, tolerate, and document virtually any optical system. OpTaliX includes geometrical and diffraction analysis, optimization, thin film multilayer analysis and refinement, non-sequential ray tracing, physical optics propagation, polarization analysis, ghost imaging, tolerance analysis, extensive manufacturing support, user-defined graphics, illumination, macros, and many more. It is successfully used for the design of photographic and video lenses, industrial optics (beam expanders, laser scanners, reproduction, machine vision), space optics, zoom optics, medical optics, illumination devices, fiber optical telecom systems, infrared optics, X-ray optics, telescopes, eyepieces, and many more.