List of free analog and digitalelectronic circuit simulators, available forWindows,macOS,Linux, and comparing againstUC BerkeleySPICE. 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 asKiCad orgEDA.
| 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 aPIC 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 atLinear Technology. |
| Micro-Cap | Spectrum Software | 2021 | | | Windows | | | PLD expressions | | End-of-life, no longer updated; wascommercial software |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 ofTINA licensed to TI |
| PSPICE-FOR-TI[12] | Cadence &TI | 2023 | | | Windows | | | | | Special version ofPSpice licensed to TI[13] |
| Gnucap[14] | n/a | 2006 | ? | | Linux | | | | | SPICE, Verilog, Spectre netlists;plug-ins |
| Ngspice[15][16] | n/a | 2025 | | | Windows, macOS, Linux | | | * | | Backend simulator forAltium Designer,Eagle,KiCad,Qucs-S[17] |
| SPICE[18] | UC Berkeley | 1993 | | | Source-only | | | | | End-of-life, no longer updated; historically important, because many analog simulators are based on this project |
| Xyce[19] | Sandia National Laboratories | 2023 | | | Windows, macOS, Linux | | * | * | | Backend simulator, supports parallel simulation on Linux and macOS, can solve huge circuits |
