Directly from SharpConstruct website:
"SharpConstruct is a 3D modeling program designed to paint depth on to polygon models in real-time. Unlike traditional modeling programs, SharpConstruct makes it easy to model organic shapes.
There is no need to even look at a wireframe (unless you want to). Instead, the model is manipulated much like clay â€” push or pull an area, smooth it, make a hollow or a hill. The entire process is both simple and organic; you won't need years of modeling experience to create detailed models in SharpConstruct."
In other words SharpContruct is for Linux users what Z-Brush is to Windows ones, i.e. an amazing tool to litterally sculpt 3d meshes as they were made of clay. Easy to use and powerful, a perfect Blender companion.
Read more here.
Federico "Lox" Lucignano