Pro-Engineer is a CAD system developed by PTC (Parametric Technology Corp.). Successive versions are Pro-Engineer, Wildfire and Creo.

Pro-Engineer file extensions are
.prt (Part)
.asm (Assembly)
.drw (Drawing)
.frm (drawing format file)
.mfg (manufacturing)
.lay (layouts)
.sec (sketch)
.dgm (diagram)
.rep (report)
.mrk (markup)
.cem (schema)
.int (geometry interface previous R13)
.g (granite interface)
.neu (neutral interface)
.ol, .ed, .edz, .pvs, .pvz (Creo View)

Pro-Engineer supported native or neutral formats are STL, IGES, DXF, DWG, STEP, MEDUSA, Parasolid, ECAD, Rhino, Inventor, ACIS, VDA, ICEM.

CAD Interop distributes several Softwares to view, translate and validate Pro-Engineer or Creo files. Find below the list of our solutions compatible with Pro-Engineer or Creo: