List of free electronics circuit simulators

Updated: 11/6/2025, 12:44:54 AM Wikipedia source

List of free analog and digital electronic circuit simulators, available for Windows, macOS, Linux, and comparing against UC Berkeley SPICE. The following table is split into two groups based on whether it has a graphical visual interface or not. The latter requires a separate program to provide that feature, such as Qucs-S, Oregano, or a schematic design application that supports external simulators, such as KiCad or gEDA.

Table notes Xyce - limited experimental support for Verilog and VHDL

Tables

KTechLab

Simulatorname

KTechLab

Business or developer

n/a

Latestreleaseyear

2020

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Linux

Analog?

Digital?

Digitallanguages?

Visualeditor?

Notes

Simulates a PIC microcontroller

Logisim-evolution

Simulatorname

Logisim-evolution

Business or developer

Multiple Universities

Latestreleaseyear

2024

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Windows, macOS, Linux

Analog?

Digital?

Digitallanguages?

VHDL

Visualeditor?

Notes

Fork of Logisim (development ended in 2011)

LTspice

Simulatorname

LTspice

Business or developer

Analog Devices

Latestreleaseyear

2025

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Windows, macOS, POL

Analog?

Digital?

Digitallanguages?

Visualeditor?

Notes

Very popular, updated often Originally created at Linear Technology.

Micro-Cap

Simulatorname

Micro-Cap

Business or developer

Spectrum Software

Latestreleaseyear

2021

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Windows

Analog?

Digital?

Digitallanguages?

PLD expressions

Visualeditor?

Notes

End-of-life, no longer updated; was commercial software

QSPICE

Simulatorname

QSPICE

Business or developer

Qorvo

Latestreleaseyear

2025

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Windows

Analog?

Digital?

Digitallanguages?

Verilog

Visualeditor?

Notes

Integrated support for digital blocks, C++, Verilog; author same as LTspice

Qucs

Simulatorname

Qucs

Business or developer

n/a

Latestreleaseyear

2017

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Windows, macOS, Linux

Analog?

Digital?

Digitallanguages?

VHDL, Verilog (only pure digital simulations)

Visualeditor?

Notes

Qt GUI; uses own SPICE-incompatible simulator Qucsator for analog

Qucs-S

Simulatorname

Qucs-S

Business or developer

various contributors

Latestreleaseyear

2025

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Windows, Linux,macOS

Analog?

Digital?

Digitallanguages?

Visualeditor?

Fork of Qucs that supports SPICE-compatible simulator backends: Ngspice, Xyce, SpiceOpus, Qucsator

InfineonSpice

Simulatorname

InfineonSpice

Business or developer

Infineon Technologies

Latestreleaseyear

2024

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Windows, Wine

Analog?

Digital?

Digitallanguages?

Visualeditor?

Notes

Analog SPICE Simulation

SapWin

Simulatorname

SapWin

Business or developer

University of Florence

Latestreleaseyear

2019

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Windows

Analog?

Digital?

Digitallanguages?

Visualeditor?

Notes

A serial number is sent to email to activate

Tinkercad Circuits

Simulatorname

Tinkercad Circuits

Business or developer

Autodesk

Latestreleaseyear

2013

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Web-based

Analog?

Digital?

Digitallanguages?

Arduino (via block or text code)

Visualeditor?

Notes

Beginner-friendly; simulates Arduino and basic electronics

TINA–TI

Simulatorname

TINA–TI

Business or developer

DesignSoft & TI

Latestreleaseyear

2018

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Windows, Wine

Analog?

Digital?

Digitallanguages?

Visualeditor?

Notes

Special version of TINA licensed to TI

PSPICE-FOR-TI

Simulatorname

PSPICE-FOR-TI

Business or developer

Cadence & TI

Latestreleaseyear

2023

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Windows

Analog?

Digital?

Digitallanguages?

Visualeditor?

Notes

Special version of PSpice licensed to TI

Gnucap

Simulatorname

Gnucap

Business or developer

n/a

Latestreleaseyear

2006

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Linux

Analog?

Digital?

Digitallanguages?

Visualeditor?

Notes

SPICE, Verilog, Spectre netlists; plug-ins

Ngspice

Simulatorname

Ngspice

Business or developer

n/a

Latestreleaseyear

2024

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Windows, macOS, Linux

Analog?

Digital?

Digitallanguages?

Visualeditor?

Notes

Backend simulator for Altium Designer, Eagle, KiCad, Qucs-S

SPICE

Simulatorname

SPICE

Business or developer

UC Berkeley

Latestreleaseyear

1993

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Source-only

Analog?

Digital?

Digitallanguages?

Visualeditor?

Notes

End-of-life, no longer updated; historically important, because many analog simulators are based on this project

Xyce

Simulatorname

Xyce

Business or developer

Sandia National Laboratories

Latestreleaseyear

2023

Currentlydeveloped?

Sourcecode?

Operatingsystemplatforms

Windows, macOS, Linux

Analog?

Visualeditor?

Notes

Backend simulator, supports parallel simulation on Linux and macOS, can solve huge circuits

Simulatorname	Business or developer	Latestreleaseyear	Currentlydeveloped?	Sourcecode?	Operatingsystemplatforms	Analog?	Digital?	Digitallanguages?	Visualeditor?	Notes
KTechLab	n/a	2020			Linux					Simulates a PIC microcontroller
Logisim-evolution	Multiple Universities	2024			Windows, macOS, Linux			VHDL		Fork of Logisim (development ended in 2011)
LTspice	Analog Devices	2025			Windows, macOS, POL					Very popular, updated often Originally created at Linear Technology.
Micro-Cap	Spectrum Software	2021			Windows			PLD expressions		End-of-life, no longer updated; was commercial software
QSPICE	Qorvo	2025			Windows			Verilog		Integrated support for digital blocks, C++, Verilog; author same as LTspice
Qucs	n/a	2017	?		Windows, macOS, Linux			VHDL, Verilog (only pure digital simulations)		Qt GUI; uses own SPICE-incompatible simulator Qucsator for analog
Qucs-S	various contributors	2025			Windows, Linux,macOS			VHDL, Verilog (only pure digital simulations)		Fork of Qucs that supports SPICE-compatible simulator backends: Ngspice, Xyce, SpiceOpus, Qucsator
InfineonSpice	Infineon Technologies	2024			Windows, Wine					Analog SPICE Simulation
SapWin	University of Florence	2019	?		Windows					A serial number is sent to email to activate
Tinkercad Circuits	Autodesk	2013			Web-based			Arduino (via block or text code)		Beginner-friendly; simulates Arduino and basic electronics
TINA–TI	DesignSoft & TI	2018			Windows, Wine					Special version of TINA licensed to TI
PSPICE-FOR-TI	Cadence & TI	2023			Windows					Special version of PSpice licensed to TI
Gnucap	n/a	2006	?		Linux					SPICE, Verilog, Spectre netlists; plug-ins
Ngspice	n/a	2024			Windows, macOS, Linux					Backend simulator for Altium Designer, Eagle, KiCad, Qucs-S
SPICE	UC Berkeley	1993			Source-only					End-of-life, no longer updated; historically important, because many analog simulators are based on this project
Xyce	Sandia National Laboratories	2023			Windows, macOS, Linux					Backend simulator, supports parallel simulation on Linux and macOS, can solve huge circuits

References

Qucs-S.
https://ra3xdh.github.io/
Oregano v0.84.43 Release.
https://github.com/drahnr/oregano/releases/tag/v0.84.43
KTechLab v0.50.0 Release.
https://mail.kde.org/pipermail/kde-announce-apps/2020-September/005606.html
Logisim-evolution (Holy Cross Edition); College of the Holy Cross.
https://github.com/kevinawalsh/logisim-evolution
Logisim-evolution; Swiss Universities.
https://github.com/logisim-evolution/logisim-evolution
Logisim; Carl Burch.
http://www.cburch.com/logisim/
Analog Devices
http://LTspice.linear.com/fieldsyncXVII/Changelog.txt.gz
QSPICE Simulator; Qorvo.
https://www.qorvo.com/design-hub/design-tools/interactive/qspice
"Qucs-S: Getting started analog simulation with Ngspice backend"
https://ra3xdh.github.io/pdf/qucs_s_tutorial.pdf
InfineonSpice.
https://www.infineon.com/cms/en/design-support/simulation-modeling/infineonspice-offline-simulation-tool/
TINA-TI; Texas Instruments.
https://www.ti.com/tool/TINA-TI
PSPICE-FOR-TI; Texas Instruments.
https://www.ti.com/tool/PSPICE-FOR-TI
Getting started with the new PSpice for TI design and simulation tool; Texas Instruments.
https://www.ti.com/lit/pdf/SLYP725
http://gnucap.org
http://gnucap.org
Tools that use ngspice as simulator; Ngspice.
https://ngspice.sourceforge.net/resources.html
SPICE 3f.5 Release; UC Berkeley.
https://ptolemy.berkeley.edu/projects/embedded/pubs/downloads/spice/
"Sandia National Laboratories: Xyce Parallel Electronic Simulator (Xyce)"
https://xyce.sandia.gov/
xyce.sandia.gov
https://xyce.sandia.gov/files/xyce/AppNote-MixedSignal.pdf