NX is a CAD system developed by Unigraphics/Siemens PLM.

NX file extensions are
.prt (Part, Assembly, Drawing)
.fem (Finit Element)
.sim (simulation)
.afm (FEM Assembly)
.udf (user defined feature)

NX supported native or neutral formats are JT, IGES, DXF, DWG, STEP, Solid Edge, Parasolid, PLMXML.

CAD Interop distributes several Softwares to view, translate and validate NX files. Find below the list of our solutions compatible with NX: