3DCrafter is described as '(formerly 3D Canvas) is a real-time 3D modeling and animation tool that incorporates an intuitive drag-and-drop approach to 3D modeling' and is an app in the Photos & Graphics category. There are more than 50 alternatives to 3DCrafter for a variety of platforms, including Windows, Mac, Linux, iPad and iPhone. The best alternative is Blender, which is both free and Open Source. Other great apps like 3DCrafter are Wings 3D (Free, Open Source), Autodesk Maya (Paid), ZBrush (Paid) and Autodesk 3ds Max (Paid).
Wings 3D is a subdivision modeler inspired by Nendo and Mirai from Izware. It is possible to assign materials, vertex color, UV coordinates and textures, but there will be improvements in those features before Wings goes 1.0.
Sketchfab is the first web service to publish interactive 3D content online in real-time without plugins. Every new format has its global platform: videos have Youtube, photos have flickr, sounds have Soundcloud... Now 3D files have Sketchfab.