Face Gen - The easy way to create realistic faces 3D human faces from 1 or 2 photographs or at random.
Vroid - A free 3D character modeller
MakeHuman - MakeHuman is a free, open source, interactive modeling tool for creating custom 3D human characters.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
DAZ 3D - Daz 3D, 3D Models, 3D Animation, 3D Software
DesignDoll - Create a personalized sketch doll and make it pose.