NX, formerly known as "Unigraphics", is an advanced high-end CAD / CAM / CAE, which has been owned since 2007 by Siemens Digital Industries Software. [1][2] In 2000, Unigraphics purchased SDRC I-DEAS and began an effort to integrate aspects of both software packages into a single product which became Unigraphics NX or NX. More @Wikipedia
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