Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
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.
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.
Circuit Simulator - Animated electronic circuit simulator using ideal components to visualize voltage and current.
Ktechlab - KTechLab is an IDE for microcontrollers and electronics.
Solve Elec - Solve Elec is a free educational program to draw and analyze electrical circuits.