List of free electronics circuit simulators

Template:Short description 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.

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Spectrum Software	2021	Template:Na	Template:Na	Windows	Template:Ya	Template:Ya	PLD expressions	Template:Ya	End-of-life, no longer updated; was commercial software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

Table notes

• Xyce - limited experimental support for Verilog and VHDL

See also

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