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.
LDCad - LDCad is a multiplatform ...
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
Stud.io - Build LEGO designs online with friends.
ZBrush - ZBrush is a digital sculpting and painting software solution.