This thread is basically keeping all those 3d artists like myself up-to-date with the progress made in open source code.
Basically, its a free tool for sculpting in 3d, similar, although not as powerful as zbrush.
As long as you import your file with the .obj extension you can use it with most 3d software packages. I'm using it with blender and it rocks.
Example of what sharpconstruct can do. God I love open source!