Sharp Construct is described as 'SharpConstruct is an OpenGL graphics application that supports real-time sculpting of polygon meshes. The process is similar to painting on a canvas in a traditional 2D image program, but with an added dimension' and is an app in the Photos & Graphics category. There are more than 25 alternatives to Sharp Construct for a variety of platforms, including Windows, Mac, Linux, iPad and Android. The best alternative is Blender, which is both free and Open Source. Other great apps like Sharp Construct are MakeHuman (Free, Open Source), ZBrush (Paid), Sketchfab (Freemium) and Bforartists (Free, Open Source).
MakeHuman is an interactive modelling tool for creating realistic 3D human characters. These models can be exported to several computer graphics and animation platforms including Blender, Unity 3D, Unreal Engine, OpenSim and Second Life.
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.
pixiv has released "VRoid Studio", a character maker that allows users to create, in easy steps, 3D model characters which can be used in various VR\AR platforms as well as the production 3DCG animation and games.