Blender - Blender is the open source, cross platform suite of tools for 3D creation.
AutoCAD MEP - AutoCAD MEP software helps you draft, design, and document building systems.
IronCAD - IronCAD is intuitive 3D CAD software that increases efficiency and can be used standalone or to complement an existing design environment.
DataCAD - DataCAD is a computer-aided design and drafting software for 2D and 3D architectural design and drafting
Inventor - Inventor is a 3D CAD software that lets you quickly create 3D models with embedded intelligence, intuitive workflows, and optimized performance.
AutoCAD Arch - Design and document more efficiently with the AutoCAD Architecture toolset, created specifically for architects.