Blender - Blender is the open source, cross platform suite of tools for 3D creation.
DataCAD - DataCAD is a computer-aided design and drafting software for 2D and 3D architectural design and drafting
Sculptris - Sculptris: Enter a world of digital art without barriers.
AutoCAD Arch - Design and document more efficiently with the AutoCAD Architecture toolset, created specifically for architects.
ShapeShop - ShapeShop is an advanced and professional 3D design and modeling application that comes with an easy-to-use and user-friendly interface.
AutoCAD Plant 3D - AutoCAD Plant 3D is a BIM software that lets you create, modify, and manage schematic piping and instrumentation diagrams.