SAP2000

Structural Analysis Program (SAP2000) is a structural analysis and design software. 

SAP2000 is general-purpose civil-engineering software ideal for the analysis and design of any type of structural system, including stadiums, towers, industrial plants, offshore structures, piping systems, buildings, dams, soils, machine parts and many others.

It is also a general purpose finite element program which performs the static or dynamic, linear or nonlinear analysis of structural systems.