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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
SketchUp - 3D for Everyone
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
AutoDesk InfraWorks 360 - InfraWorks 360 preliminary engineering and design software provides tools to work on infrastructure projects in a real-world context.
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.