Computers & Structures, Inc. (CSI) is a prominent software company specializing in structural and earthquake engineering software. Founded in 1975, CSI is known for its advanced analysis and design programs utilized globally by engineers to design buildings, bridges, and other structures. Their suite of products includes SAP2000, ETABS, SAFE, CSiBridge, and PERFORM-3D, each tailored to specific structural engineering needs. CSI's software is renowned for its sophisticated modeling capabilities and comprehensive analysis features.