IAR VisualSTATE - IAR Visual State is a set of tools for designing, testing and implementing embedded applications...
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
myOpenLab - MyOpenLab is a platform for finished elements (program components) that can be linked together.
Oregano - oregano - An electrical engineering tool for GNOME
LabVIEW - LabVIEW offers many of the functions you'd find in a traditional script-based programming language presented in a more intuitive visual interface ideal fo engineering.
Circuit Simulator - Animated electronic circuit simulator using ideal components to visualize voltage and current.