NX is described as 'Siemens NX software is an integrated product design, engineering and manufacturing solution that helps you deliver better products faster and more efficiently' and is an app in the Development category. There are seven alternatives to NX for Windows, Linux and Mac. The best alternative is FreeCAD, which is both free and Open Source. Other great apps like NX are SOLIDWORKS (Paid), Autodesk Inventor (Paid), Catia (Paid) and PTC Creo (Paid).
SOLIDWORKS is a leading 3D CAD software for design, analysis and product data management. SOLIDWORKS solutions can help boost productivity, harness intelligence, foster innovation, and facilitate collaboration.
CATIA (Computer Aided Three-dimensional Interactive Application) (in English usually pronounced /k?'ti?/) is a multi-platform CAD/CAM/CAE commercial software suite developed by the French company Dassault Systèmes.
3D CAD software that combines comprehensive translators with history-free editing, enabling users to open and edit any file as if they created it and allowing for quick re-use of design data regardless of source.