All of these resources are free to download and use. Free 3D CAD models including AutoCAD 3D blocks, free sketchup components, Revit families, solidworks models and 3ds max models for use in your 3D CAD designs. Computer-generated image created by Gilles Tranįollowing is a list of notable 3D modeling software, computer programs used for developing a mathematical representation of any three-dimensional surface of objects, also called 3D modeling. Some of these 3d models are ready for games and 3d printing. Here youll find a growing collection of 3D models, textures, and images from inside NASA.