VeroRoute - Cross-platform software for producing Veroboard (stripboard), Perfboard, and single-sided PCB...
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Virtual Breadboard - It is a circuit simulator on a virtual breadboard.
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
ZBrush - ZBrush is a digital sculpting and painting software solution.