List of free electronics circuit simulators

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, ^[1] Oregano, ^[2] or a schematic design application that supports external simulators, such as KiCad or gEDA.

Simulator name	Business or developer	Latest release year	Currently developed?	Source code?	Operating system platforms	Analog?	Digital?	Digital languages?	Visual editor?	Notes
KTechLab [3]	n/a	2020			Linux					Simulates a PIC microcontroller
Logisim-evolution [4] [5]	Multiple Universities	2024			Windows, macOS, Linux			VHDL		Fork of Logisim (development ended in 2011) [6]
LTspice	Analog Devices	2025			Windows, macOS, POL					Very popular, updated often [7] Originally created at Linear Technology.
Micro-Cap	Spectrum Software	2021			Windows			PLD expressions		End-of-life, no longer updated; was commercial software
QSPICE [8]	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) [9]		Qt GUI; uses own SPICE-incompatible simulator Qucsator for analog
Qucs-S [1]	various contributors	2025			Windows, Linux, macOS					Fork of Qucs that supports SPICE-compatible simulator backends: Ngspice, Xyce, SpiceOpus, Qucsator
InfineonSpice [10]	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 [11]	DesignSoft & TI	2018			Windows, Wine					Special version of TINA licensed to TI
PSPICE-FOR-TI [12]	Cadence & TI	2023			Windows					Special version of PSpice licensed to TI [13]
Gnucap [14]	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 [15]
SPICE [16]	UC Berkeley	1993			Source-only					End-of-life, no longer updated; historically important, because many analog simulators are based on this project
Xyce [17]	Sandia National Laboratories	2023			Windows, macOS, Linux		*	*		Backend simulator, supports parallel simulation on Linux and macOS, can solve huge circuits

Table notes

• Xyce - limited experimental support for Verilog and VHDL ^[18]

See also

• Electronics portal

• List of HDL simulators for VHDL, Verilog, SystemVerilog, ...
• Espresso heuristic logic minimizer, such as Logic Friday
• Electronic kit
• Comparison of EDA software
• List of instruction set simulators
• List of electrical engineering software

References

1. Qucs-S.
2. Oregano v0.84.43 Release.
3. KTechLab v0.50.0 Release.
4. Logisim-evolution (Holy Cross Edition); College of the Holy Cross.
5. Logisim-evolution; Swiss Universities.
6. Logisim; Carl Burch.
7. "LTspice - Change Log". Analog Devices . Archived from the original on April 19, 2021.
8. QSPICE Simulator; Qorvo.
9. Kuznetsov, Vadim (2023-08-16). "Qucs-S: Getting started analog simulation with Ngspice backend" (PDF). pp. 10–11. Archived (PDF) from the original on 2023-08-28. Retrieved 2023-08-28.
10. InfineonSpice.
11. TINA-TI; Texas Instruments.
12. PSPICE-FOR-TI; Texas Instruments.
13. Getting started with the new PSpice for TI design and simulation tool; Texas Instruments.
14. http://gnucap.org
15. Tools that use ngspice as simulator; Ngspice.
16. SPICE 3f.5 Release; UC Berkeley.
17. "Sandia National Laboratories: Xyce Parallel Electronic Simulator (Xyce)".
18. Sholander, Peter; Schiek, Richard L. (2020). "Application Note: Mixed Signal Simulation with Xyce 7.1" (PDF). xyce.sandia.gov. Archived (PDF) from the original on 2022-05-08. Retrieved 2023-08-27.