Mudbox 2009, the second generation of Mudbox is an amazingly easy to use digital sculpting tool that takes away all the technical aspects of working in 3D and lets your imagination and creativity flow. This may sound corny, but it really is that easy to use, and impressively fast.
The latest version added several new sculpting brushes, along with an entirely new, and much anticipated painting system. Read more >>
source : www.cgsociety.org