https://sketchfab.com/ Publish, share and discover 3D content online and in VR.
http://www.freecadweb.org/ FreeCAD is a parametric 3D modeler made primarily to design real-life objects of any size. Parametric modeling allows you to easily modify your design by going back into your model history and changing its parameters. FreeCAD is open-source and highly customizable, scriptable and extensible.
http://www.openscad.org/ OpenSCAD is a software for creating solid 3D CAD objects. It is free software and available for Linux/UNIX, MS Windows and Mac OS X.
https://www.blender.org/ Blender Foundation is a Dutch public-benefit corporation, established to support and facilitate the projects on blender.org. Blender is the free and open source 3D creation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, even video editing and game creation.
http://www.sketchup.com/ At SketchUp, we do our best to make great tools for drawing. For our users, drawing is thinking. They draw to explore ideas, to figure things out, to show other people what they mean. They draw because they love it, and because nothing great was ever built that didn’t start with a great drawing….
Flash Augmented Reality Authoring System (FLARAS): http://ckirner.com/flaras2/ O Flash Augmented Reality Authoring System (FLARAS) é uma ferramenta de autoria visual de aplicações interativas de Realidade Aumentada, elaborada a partir das ferramentas FLARToolKit e SACRA. A principal característica do FLARAS é permitir que pessoas leigas da área de computação possam desenvolver aplicações de realidade aumentada, sem…