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.

Free analog electronic circuit simulators

• Electric VLSI Design System, used to draw schematics and lay out integrated circuits.
• gpsim
• LTspice Windows and Linux under Wine
• TINA-TI Free SPICE variant that includes many TI component libraries
• SimOne
• SapWin
• SPICE and variants
• Oregano (software)
• PSIM (unlimited time demo)

Free digital electronic circuit simulators

• CPU Sim
• KTechLab
• Logisim
• Chipmunk-diglog
• Paul Falstad's online java circuit simulator [1]
• TkGate

Free mixed-signal (analog & digital) electronic circuit simulators

• GNU Circuit Analysis Package (Gnucap)
• Micro-Cap, student version free of charge
• Ngspice
• Quite Universal Circuit Simulator (Qucs)