Femap (Finite Element Modeling And Postprocessing) is an engineering analysis program sold by Siemens PLM Software that is used to build finite element models of complex engineering problems ("pre-processing") and view solution results ("post-processing"). Femap  helps users visualize FEA models easily with enhanced grouping and entity display capabilities. It also improves modeling and analysis workflows through tighter integration with NX Nastran. Femap with NX Nastran provides comprehensive functionality in an independent environment for modeling, simulation and review of product performance results.