List of free electronics circuit simulators
Updated: 5/20/2026, 7:12:39 PM 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 ngspice - loads Verilog digital code compiled by Verilator or Icarus Verilog or VHDL compiled by GHDL for mixed signal simulation Xyce - limited experimental support for Verilog and VHDL
Tables
KTechLab
KTechLab
Simulator
name
KTechLab
Business or developer
n/a
Latest
release
year
2020
Currently
developed?
Source
code?
Operating
system
platforms
Linux
Analog?
Digital?
Digital
languages?
Visual
editor?
Notes
Simulates a PIC microcontroller
Logisim-evolution
Logisim-evolution
Simulator
name
Logisim-evolution
Business or developer
Multiple universities
Latest
release
year
2025
Currently
developed?
Source
code?
Operating
system
platforms
Windows, macOS, Linux
Analog?
Digital?
Digital
languages?
VHDL
Visual
editor?
Notes
Fork of Logisim (development ended in 2011)
LTspice
LTspice
Simulator
name
LTspice
Business or developer
Analog Devices
Latest
release
year
2026
Currently
developed?
Source
code?
Operating
system
platforms
Windows, macOS, POL
Analog?
Digital?
Digital
languages?
Visual
editor?
Notes
Very popular, updated often Originally created at Linear Technology.
Micro-Cap
Micro-Cap
Simulator
name
Micro-Cap
Business or developer
Spectrum Software
Latest
release
year
2021
Currently
developed?
Source
code?
Operating
system
platforms
Windows
Analog?
Digital?
Digital
languages?
PLD expressions
Visual
editor?
Notes
End-of-life, no longer updated; was commercial software
QSPICE
QSPICE
Simulator
name
QSPICE
Business or developer
Qorvo
Latest
release
year
2026
Currently
developed?
Source
code?
Operating
system
platforms
Windows
Analog?
Digital?
Digital
languages?
Verilog
Visual
editor?
Notes
Integrated support for digital blocks, C++, Verilog; author same as LTspice
Qucs
Qucs
Simulator
name
Qucs
Business or developer
n/a
Latest
release
year
2017
Currently
developed?
?
Source
code?
Operating
system
platforms
Windows, macOS, Linux
Analog?
Digital?
Digital
languages?
VHDL, Verilog (only pure digital simulations)
Visual
editor?
Notes
Qt GUI; uses own SPICE-incompatible simulator Qucsator for analog
Qucs-S
Qucs-S
Simulator
name
Qucs-S
Business or developer
various contributors
Latest
release
year
2025
Currently
developed?
Source
code?
Operating
system
platforms
Windows, Linux,
macOS
Analog?
Digital?
Digital
languages?
Visual
editor?
Fork of Qucs that supports SPICE-compatible simulator backends: Ngspice, Xyce, SpiceOpus, Qucsator
InfineonSpice
InfineonSpice
Simulator
name
InfineonSpice
Business or developer
Infineon Technologies
Latest
release
year
2024
Currently
developed?
Source
code?
Operating
system
platforms
Windows, Wine
Analog?
Digital?
Digital
languages?
Visual
editor?
Notes
Analog SPICE Simulation
SapWin
SapWin
Simulator
name
SapWin
Business or developer
University of Florence
Latest
release
year
2019
Currently
developed?
?
Source
code?
Operating
system
platforms
Windows
Analog?
Digital?
Digital
languages?
Visual
editor?
Notes
A serial number is sent to email to activate
Tinkercad Circuits
Tinkercad Circuits
Simulator
name
Tinkercad Circuits
Business or developer
Autodesk
Latest
release
year
2013
Currently
developed?
Source
code?
Operating
system
platforms
Web-based
Analog?
Digital?
Digital
languages?
Arduino (via block or text code)
Visual
editor?
Notes
Beginner-friendly; simulates Arduino and basic electronics
TINA–TI
TINA–TI
Simulator
name
TINA–TI
Business or developer
DesignSoft & TI
Latest
release
year
2018
Currently
developed?
Source
code?
Operating
system
platforms
Windows, Wine
Analog?
Digital?
Digital
languages?
Visual
editor?
Notes
Special version of TINA licensed to TI
PSPICE-FOR-TI
PSPICE-FOR-TI
Simulator
name
PSPICE-FOR-TI
Business or developer
Cadence & TI
Latest
release
year
2023
Currently
developed?
Source
code?
Operating
system
platforms
Windows
Analog?
Digital?
Digital
languages?
Visual
editor?
Notes
Special version of PSpice licensed to TI
Gnucap
Gnucap
Simulator
name
Gnucap
Business or developer
n/a
Latest
release
year
2006
Currently
developed?
?
Source
code?
Operating
system
platforms
Linux
Analog?
Digital?
Digital
languages?
Visual
editor?
Notes
SPICE, Verilog, Spectre netlists; plug-ins
Ngspice
Ngspice
Simulator
name
Ngspice
Business or developer
n/a
Latest
release
year
2025
Currently
developed?
Source
code?
Operating
system
platforms
Windows, macOS, Linux
Analog?
Digital?
Visual
editor?
Notes
Backend simulator for Altium Designer, Eagle, KiCad, Qucs-S
SPICE
SPICE
Simulator
name
SPICE
Business or developer
UC Berkeley
Latest
release
year
1993
Currently
developed?
Source
code?
Operating
system
platforms
Source-only
Analog?
Digital?
Digital
languages?
Visual
editor?
Notes
End-of-life, no longer updated; historically important, because many analog simulators are based on this project
Xyce
Xyce
Simulator
name
Xyce
Business or developer
Sandia National Laboratories
Latest
release
year
2025
Currently
developed?
Source
code?
Operating
system
platforms
Windows, macOS, Linux
Analog?
Visual
editor?
Notes
Backend simulator, supports parallel simulation on Linux and macOS, can solve huge circuits
| Simulator name | Business or developer | Latest release year | Currently developed? | Source code? | Operating system platforms | Analog? | Digital? | Digital languages? | Visual editor? | Notes |
| KTechLab | n/a | 2020 | | | Linux | | | | | Simulates a PIC microcontroller |
| Logisim-evolution | Multiple universities | 2025 | | | Windows, macOS, Linux | | | VHDL | | Fork of Logisim (development ended in 2011) |
| LTspice | Analog Devices | 2026 | | | 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 | 2026 | | | 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 | | | | 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 | 2025 | | | 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 | 2025 | | | 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 Release.https://github.com/drahnr/oregano/releases/tag/v0.84.43
- KTechLab v0 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 Deviceshttp://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.orghttp://gnucap.org
- "ngspice"https://ngspice.sourceforge.io/
- "ngspice"https://sourceforge.net/projects/ngspice/
- Tools that use ngspice as simulator; Ngspice.https://ngspice.sourceforge.net/resources.html
- SPICE 3f Release; UC Berkeley.https://ptolemy.berkeley.edu/projects/embedded/pubs/downloads/spice/
- "Sandia National Laboratories: Xyce Parallel Electronic Simulator (Xyce)"https://xyce.sandia.gov/
- xycehttps://xyce.sandia.gov/files/xyce/AppNote-MixedSignal.pdf