Circuit Simulator

Animated electronic circuit simulator using ideal components to visualize voltage and current.

Free Open Source Mac OS X Windows Linux Web

gEDA Project

The gEDA project has produced and continues working on a full GPL'd suite and toolkit of Electronic Design Automation tools. These tools are used for electrical circuit design, schematic capture, simulation, prototyping, and production.

Free Open Source Linux

QUCS

The Quite Universal Circuit Simulator (QUCS) is an integrated circuit simulator allowing the simulation and graphical presentation of results of large-signal, small-signal and noise behavior in circuits.

Free Open Source Mac OS X Windows Linux

Ktechlab

KTechLab is an IDE for microcontrollers and electronics. It supports circuit simulation, program development for microcontrollers and simulating the programmed microcontroller together with its application circuit.

Free Open Source Linux

Proteus PCB design

Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a powerful, integrated and easy to use suite of tools for professional PCB Design.

Commercial Windows

Altium Designer

Altium Designer software is for PCB design.

Commercial Windows

LTspice

LTspice IV is a high performance Spice III simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators.

Free Mac OS X Windows

NI Circuit Design Suite Power Pro

NI Circuit Design Suite software improves the PCB design process by integrating capture, simulation, and layout into a single toolchain with NI Multisim and Ultiboard software.

Commercial Windows

DesignSpark PCB

The World’s Most Powerful Free Schematic and PCB Layout

Free Windows

TINA

TINA Design Suite is a powerful circuit simulation package for analyzing, designing, and real time testing of analog, digital, VHDL, MCU, SMPS, RF, communication, optoelectronic and mixed electronic circuits and their PCB layouts.

Commercial Windows Web

Upverter

We build the pickaxes of hardware engineering. Ideation tools, schematic capture, PCB layout, design hosting, parts library management, and affordable prototyping.

Commercial Web

Electronics Workbench

In 1999 the companies merged, and renamed itself after its most well known product, Electronics Workbench.

Commercial Windows

iCircuit

Its advanced simulation engine can handle both analog and digital circuits and features realtime always-on analysis. It is the perfect companion to students, hobbyists, and engineers.

Commercial Mac OS X Windows Android iPhone iPad Windows Phone

OrCAD (All Products)

The Cadence OrCAD product line provides affordable, high-performance PCB design tools that boost productivity for smaller design teams and individual PCB designers.

Commercial Windows

Autodesk Circuits

Autodesk Circuits empowers you to bring your ideas to life with free, easy to use online tools.

Freemium Web

PCBWeb

PCBWeb is a 100% free Windows desktop CAD application for designing and manufacturing electronics hardware. Features include schematic capture, PCB Layout with gerber output, and Bill of Materials manager.

Free Windows

Schematics

Schematics.com empowers engineers to design, share, and collaborate on circuit design online.

Free Personal Web

Ngspice

Ngspice is a mixed-level/mixed-signal circuit simulator. Its code is based on three open source software packages: Spice3f5, Cider1b1 and Xspice. Ngspice is part of gEDA project, a full GPL'd suite of Electronic Design Automation tools.

Free Open Source Mac OS X Windows Linux

Micro-Cap

Micro-Cap 11 is an integrated schematic editor and mixed analog/digital simulator that provides an interactive sketch and simulate environment for electronics engineers.

Commercial Windows