There is a growing industry demand for both weight savings and manufacturing and assembly cost reduction in commercial aircraft structures. The industry is looking towards improved materials and advanced structural concepts to improve performance and to parts consolidation to improve cost. There is a significant level of activity in the industry aimed at developing the analysis tools and design methodologies for integral structures, which requires loading conditions, material property data, failure models, and realistic damage scenarios. PC based software tools utilizing finite element analysis have been developed by Alcoa for rapid damage tolerance trade studies on materials and geometry for fuselage, wing skin, wing spar, and horizontal stabilizer structures. This paper describes the latest developments in the Alcoa suite of software tools tailored to offer a broader variety of realistic components and to analyze advanced structural concepts that include integral wing skin panels and provides examples of their usage.