ArchiCAD - ArchiCAD 16 enables BIM modeling with a new green approach to planning. Create anything you need with ArchiCAD's flexible new features for design.
KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
ARCHLine.XP - BIM / CAD Software for 3D Architectural and Interior Design
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
QUCS - Qucs, briefly for Quite Universal Circuit Simulator, is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit.