There are lot of modelers you can use ! It depend of what you want. If you want free modelers, I know these softs : - spatch : to make spline based models (very basic but powerful when you make the effort to learn how to use it) - Amapi 4.1 (this version is free) : largely most powerful than spatch, but there is only one main windows - Amorphium 1.0 : fantastic organic modeler, and very easy to use. There are also other free softs like anim8tor, metasequoia, but I don't know them (these softs are used by lot of people here). ;=) Yves