Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
Ngspice - Ngspice is a mixed-level/mixed-signal circuit simulator.
Altium PCB Designer - Altium offers a top-notch, best-in-class PCB Designer to give engineers the tools they need to interlink with each side involved in the electronic design process.
LTspice - LTspice® is a high performance SPICE simulation software, schematic capture and waveform viewer with enhancements and models for easing the simulation of analog circuits.
Ktechlab - KTechLab is an IDE for microcontrollers and electronics.
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