Logisim - Logisim is an educational tool for designing and simulating digital logic circuits.
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
Digital - A simulator for digital circuits.
Circuit Simulator - Animated electronic circuit simulator using ideal components to visualize voltage and current.
BOOLR - Open-source digital logic simulator
VeroRoute - Cross-platform software for producing Veroboard (stripboard), Perfboard, and single-sided PCB...