List of free electronics circuit simulators

Electronic circuit simulators distributed under a free software license are available from several sources and for several computing platforms.

Analog

• Electric VLSI Design System, used to draw schematics and lay out integrated circuits
• Oregano (software), Linux or BSD
• SPICE and variants

Digital

• KTechLab
• Logisim

Mixed-signal (analog & digital)

• Circuits Cloud
• Circuits, online and java based circuit simulator
• EasyEDA, circuit simulator online
• GNU Circuit Analysis Package (Gnucap)
• Ngspice, including online SPICE
• Quite Universal Circuit Simulator (Qucs)
• Xyce, capable of solving extremely large circuit problems by Sandia National Laboratories ^[1]

Simulators with proprietary licenses

• CPU Sim
• LTspice, freeware by semiconductor manufacturer Linear Technology
• Micro-Cap, student version free of charge
• SapWin
• LASAR,for generating digital test programs and diagnostics by Teradyne's

See also

• Comparison of EDA software

References