EPLAN Electric P8 - CAE software solution for project planning, documentation and administration of electrotechnical automation projects.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
QElectroTech - QElectroTech is a free software to create electric diagrams.
FreeCAD - An open-source parametric 3D modeler
SolidWorks Electrical - SOLIDWORKS® Electrical solutions simplify electrical product design with specific tools for engineers and intuitive interfaces for faster embedded electrical system design.
Sculptris - Sculptris: Enter a world of digital art without barriers.