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 later 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 KiCadorgEDA.
| Simulator name | Business / Developer | Latest release year |
Currently developed? |
Source Code? |
O/S platforms | Analog? | Digital? | Digital languages? |
Visual editor? |
Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| KTechLab[3] | n/a | 2020 | 
|
|
Linux |
|
|
|
|
Simulates a PIC microcontroller |
| Logisim-evolution[4][5] | Multiple Universities | 2023 (HC) |
|
|
Windows, macOS, Linux |
|
|
VHDL |
|
Fork of Logisim (whose development ended in 2011)[6] |
| LTspice | Analog Devices | 2024 |
|
|
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End-of-life, no longer updated. Previously was commercial software. |
| QSPICE[8] | Qorvo | 2024 |
|
|
Windows |
|
|
Verilog |
|
Integrated support for digital blocks, C++, Verilog. Same author as LTspice. |
| Qucs | n/a | 2017 | Maybe |
|
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 | 2024 |
|
|
|
|
|
Fork of Qucs that supports SPICE-compatible simulator backends: Ngspice, Xyce, SpiceOpus, Qucsator. | ||
| SapWin | University of Florence | 2019 |
|
|
Windows |
|
|
|
|
|
| TINA–TI[10] | DesignSoft & TI | 2018 |
|
|
Windows, Wine |
|
|
|
|
Special version of TINA licensed to TI |
| PSPICE-FOR-TI[11] | Cadence & TI | 2023 |
|
|
Windows |
|
|
|
|
Special version of PSpice licensed to TI[12] |
| Gnucap[13] | n/a | 2006 |
|
|
Linux |
|
|
|
|
SPICE, Verilog, Spectre netlists. Plugins. |
| Ngspice | n/a | 2023 |
|
|
Windows, macOS, Linux |
|
|
|
|
Backend simulator for Altium Designer / Eagle / KiCad / Qucs-S.[14] |
| SPICE[15] | UC Berkeley | 1993 |
|
|
Source-only |
|
|
|
|
End-of-life, no longer updated. Historically important, because many analog simulators are based on this project. |
| Xyce[16] | Sandia National Laboratories | 2023 |
|
|
Windows, macOS, Linux |
|
* | * |
|
Backend simulator that supports parallel simulation on Linux and macOS, and capable of solving extremely large circuits. |
