KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
Pspice - OrCAD PSpice technology provides the best, high-performance circuit simulation to analyze and refine your circuits, components, and parameters before committing to layout and fabrication
Altium Designer - PCB Design Software
Circuit Simulator - Animated electronic circuit simulator using ideal components to visualize voltage and current.
Autodesk EAGLE - Autodesk EAGLE is an electronic design automation (EDA) software.
VeroRoute - Cross-platform software for producing Veroboard (stripboard), Perfboard, and single-sided PCB...