Vroid - A free 3D character modeller
Houdini - Houdini covers all the major areas of 3D production, including:
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Mixamo - A 3D character pipeline built for game devs
DAZ 3D - Daz 3D, 3D Models, 3D Animation, 3D Software
Character Creator 3 - Character Creator 3 is a full character creation solution.