FreeCAD - An open-source parametric 3D modeler
Keyshot - KeyShot 3D rendering and animation software is the fastest, easiest way to create amazing, photographic visuals of your 3D models. Enter your search in the box aboveTryYour download of KeyShot is only moments away.
SketchUp - 3D for Everyone
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.