NEi Nastran is a comprehensive finite element analysis (FEA) tool developed by NEi Software based on NASA's popular NASTRAN finite element analysis software. NEiNastran offers a complete suite for structural analysis: linear statics, modal analysis, buckling, prestress, advanced dynamics, non-linear analysis, thermal analysis. It can handle large complex structural analysis problems on your personal computer using Intel or AMD processors running any Windows platform without requiring large amounts of resources. Versions are also available for the UNIX and Linux platforms for both 32-bit and 64-bit systems. NEi Nastran is compatible with MSC.Nastran, NX Nastran, FEMAP, Patran and many more FEA tools.

NEiFusion provides the best of all worlds for consultants, users new to FEA, small companies, and any engineer who needs professional level FEA at the least cost. While highly affordable, NEiFusion's FEA Modeler and Solver have the key high value features typically found only in professional level engineering analysis software, like, the well regarded Parasolid geometry engine for ease-of-use in model creation, Nastran solvers, a standard in the FEA industry for accuracy and power, wide file sharing and import capabilities with other FEA and 3D CAD software, and an easy migration and upgrade path to more sophisticated analysis capabilities should the need arise.