CSI ETABS Ultimate full version for Windows PC The innovative and revolutionary new ETABS is the ultimate integrated software package for buildings' structural analysis and design. ETABS offers unmatched 3D object-based modeling and visualization tools, blazingly fast linear and nonlinear analytical power, sophisticated and comprehensive design capabilities for various materials, and insightful graphic displays, reports, and schematic drawings that allow users to quickly and easily decipher and understand analysis and design results.