Referring to the popularity among the structural calculation software, it is certainly impossible not to mention ETABS, a specialized structural software of CSI (USA).

From the old versions, ETABS has proved to be a powerful analysis software. Through more than 40 years of continuous research and development, the latest version of ETABS provides excellent and intuitive modeling tools of 3D objects, overcoming the absolute limitations of graphics in previous versions and optimized for linking with information modeling application programs.