Origami/ETS is a nonlinear finite element analysis software that can handle geometric nonlinearity. The theory is based on the design and development of a large-scale deployable antenna for JAXA's engineering test satellite VIII "KIKU No. 8." A demonstration was carried out and the software has a proven track record for contributing to successful orbital deployment. It is possible to analyze large deformed structures that are difficult to analyze with ordinary structural analysis software. For instance, the software’s strength is in the analysis of structures that move substantially, and it can be used for the seismic analysis of skyscrapers and collapse analysis of wooden buildings In addition, the software’s strength is in the analysis of structures composed of cables, and it can be used in the design of playsets composed of ropes, including sail climbing.