The following programs are free and useful but must be downloaded.
A9CAD, Blender, CadStd, Desi-III CAD, Google Sketchup, Just CAD 6.0, progeCAD Smart!, QCAD Community Edition, SagCAD (Linux), Sculptris, See
My Design, Sweet Home 3D, design, schematic, diagram, geometry, layout, scale, modeling, animation, shape, graphics, vector, 3D, UV unfolding, ray tracing, wireframe, wire mesh, shading, texture, image map, contour, surface, solid, vertex, orthographic projection, perspective, drafting, planning, building, dimension, engineering, electronics, circuit, mechanics, inventing, structural, architecture, landscaping, decorating, furnishing
VISUAL COMMUNICATION LINKS
Graphic Organizer Evaluation Form
Free Online Tools for Creating Infographics
List of Free Visualization Software
WereVerse Universe Baby!