LDraw - LDraw is an open standard for LEGO CAD programs that allow the user to create virtual LEGO models...
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Stud.io - Build LEGO designs online with friends.
ZBrush - ZBrush is a digital sculpting and painting software solution.
LDCad - LDCad is a multiplatform ...
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.