A free and open source web solution to visualize and explore 3D models right in your browser. Supported file formats: 3dm, 3ds, 3mf, amf, bim, brep, dae, fbx, fcstd ... 3D design is the process of using software to create a mathematical representation of a 3-dimensional object or shape. The created object is called a 3D model and these 3-dimensional models are used for computer-generated (CG) design. 3D design is used in a variety of industries to help artists shape, communicate, document, analyse and share their ideas. SketchUp Free is the simplest free 3D modeling software on the web — no strings attached. Bring your 3D design online, and have your SketchUp projects with you wherever you go. SelfCAD is a 3D modeling software that allows you to 3D design, model, sculpt, sketch, render, animate. The best Free Cad online software.