FEA - Integrated Design & Analysis 

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• CATIA - home page (sites, reviews)
• Pro/ENGINEER - a solid modeling package in which 2D sketches of lines, arcs, and splines are created and then converted into 3D objects or parts (sites) (reviews)

• Unigraphics - corporate site of the makers of Unigraphics, I-DEAS, Solid Edge, Parasolid, iMAN (sites, reviews)