Blender - Blender is the open source, cross platform suite of tools for 3D creation.
FreeCAD - An open-source parametric 3D modeler
ZBrush - ZBrush is a digital sculpting and painting software solution.
SolidWorks - Dassault Systèmes SolidWorks Corp. develops and markets 3D CAD design software, analysis software, and product data management software. SolidWorks is the leading supplier of 3D CAD product design engineering software.
DAZ 3D - Daz 3D, 3D Models, 3D Animation, 3D Software
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.