Autodesk Mudbox

Mudbox is a proprietary computer-based 3D sculpting and painting tool. Currently developed by Autodesk, Mudbox was created by Skymatter, founded by former artists of Weta Digital, where it was first used to produce the 2005 Peter Jackson remake of King Kong. With a very simplified interface to allow for a more intuitive experience, Mudbox's primary application is high-resolution digital sculpting, texture painting, and displacement and normal map creation, though it's also used as a design tool. The current version is Mudbox 2013.