(commercial) AC3D is a 3D object/scene modeller. Features: Simple, intuitive 'click and drag' user interface, Truetype font 2D and 3D text generator, Integrated graphical texture coordinate editor, Subdivision surface modeling, and Boolean operations.
Autodesk Maya is a powerful, integrated 3D modeling, animation, effects and rendering solution. Because Maya is based on an open architecture, all your work can be scripted or programmed using a well-documented and comprehensive API (Application Program Interface), or one of two integrated scripting languages.
Blender is a 3D renderer package for use in making TV commercials, to make technical visualizations, business graphics, to do some morphing, or design user interfaces. Read more Killer App
Bricksmith allows you to create virtual instructions for your Lego creations on your Mac. The magic is based on the LDraw library, a collection of 3D models of Lego building blocks created by enthusiasts from around the world.
Google SketchUp is an easy-to-learn 3D modeling program whose few simple tools enable you to create 3D models of houses, sheds, decks, home additions, woodworking projects ? even space ships.
grafflemate is a set of Archimate stencils for Omnigraffle.
OSXFlex2D is a program that implements the "elastic", "flexural" model. Flexural modeling is not a difficult task but is tedious. OSXFlex2D makes flexural modeling easy.
StarLogo TNG is The Next Generation of StarLogo modeling and simulation software.
Trishear3D is a program to run forward, three-dimensional trishear models. Trishear3D uses the pseudo3D and true 3D algorithms of Cristallini and Allmendinger (2001), and Cristallini et al. (2004), respectively.
Wings 3D is a subdivision modeller with an user interface that is easy to use for both beginners and advanced users (inspired by Nendo and Mirai from Izware). Read more