AutoCAD Electrical - AutoCAD Electrical design software is electrical engineering software for electrical CAD.
SolidWorks - Dassault Systèmes SolidWorks Corp. develops and markets 3D CAD design software, analysis software, and product data management software. SolidWorks is the leading supplier of 3D CAD product design engineering software.
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.
SketchUp - 3D for Everyone