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Inventor - Inventor is a 3D CAD software that lets you quickly create 3D models with embedded intelligence, intuitive workflows, and optimized performance.
AutoCAD MEP - AutoCAD MEP software helps you draft, design, and document building systems.
FreeCAD - An open-source parametric 3D modeler
DataCAD - DataCAD is a computer-aided design and drafting software for 2D and 3D architectural design and drafting
Ayam - Ayam is a free 3D modelling environment for the RenderMan interface, distributed under the BSD...
AutoCAD Arch - Design and document more efficiently with the AutoCAD Architecture toolset, created specifically for architects.