Autodesk 123D

A 3D modeling and CAD tools program aimed at hobbyists and some professionals

Professional and intuitive CAD software that's available for free on the Windows operating system

Add on that allows for the creation of more realistic 3D drawings

Free CAD software to enable users to create, edit, and view DWG files

Make professional drawings and edits to images that you have made in many different formats

Load predesigned 3D model assets in a virtual environment to create custom 3D animated scenes

Lightweight 3D modeling program that simulates sculpting