Founded in 1975, Computers and Structures, Inc. (CSI) is recognized globally as the pioneering leader in software tools for structural and earthquake engineering. Software from CSI is used by thousands of engineering firms in over 160 countries for the design of major projects, including the Taipei 101 Tower, One World Trade Center, the 2008 Olympics Bird's Nest Stadium, and the cable-stayed Centenario Bridge over the Panama Canal.
CSI produces five primary software packages — SAP2000, CSiBridge, ETABS, SAFE, and PERFORM-3D — each tailored to different types of structures and problems, backed by more than four decades of research and development.