Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
MIT App Inventor - App Inventor is a cloud-based tool, which means you can create apps for phones or tablets right in your web browser.
ZBrush - ZBrush is a digital sculpting and painting software solution.