AlternativeTo Logo

Open Source LTspice Alternatives

The best open source alternative to LTspice is Circuit JS. If that doesn't suit you, our users have ranked more than 25 alternatives to LTspice and ten of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to LTspice are QUCS, OpenModelica, Xcos and Ktechlab.

LTspice alternatives are mainly Circuit Simulators but may also be Electronic Design Automation Tools or CAD Software. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of LTspice.
This page was last updated Apr 12, 2022
LTspice
  18
  • FreeProprietary
  • Mac
  • Windows

LTspice IV is a high performance Spice III simulator, schematic capture and waveform viewer with enhancements and models...

Learn more about LTspice

  1. Circuit JS

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Online

    This is a javascript electronic circuit simulator. When the applet starts up you will see an animated schematic of a simple LRC circuit. The green color indicates positive voltage. The gray color indicates ground. A red color indicates negative voltage.

    Circuit JS vs LTspice opinions
    Some users think Circuit JS is a great alternative to LTspice, some don't.

    Browser version is not the same as running locally

    Negative comment over 4 years ago
    Copy a direct link to this comment to your clipboard   
    If this Comment contains spam or other abuse, notify admins about it.

    1

    Too simplistic compared to LTspice

    Negative comment over 6 years ago
    Copy a direct link to this comment to your clipboard   
    If this Comment contains spam or other abuse, notify admins about it.

    2
  2. QUCS

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    The Quite Universal Circuit Simulator (QUCS) is an integrated circuit simulator allowing the simulation and graphical presentation of results of large-signal, small-signal and noise behavior in circuits.

    QUCS vs LTspice opinions
    Most users think QUCS is a great alternative to LTspice.

    it is much easier to operate compared to Lt Spice

    Positive comment over 4 years ago
    Copy a direct link to this comment to your clipboard   
    If this Comment contains spam or other abuse, notify admins about it.

    3


  3. OpenModelica

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    OpenModelica – A Free Modelica Environment!.

  4. Xcos

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    Xcos is a graphical editor to design hybrid dynamical systems models. Models can be designed, loaded, saved, compiled and simulated.

  5. Ktechlab

    • FreeOpen Source
    • Linux

    KTechLab is an IDE for microcontrollers and electronics. It supports circuit simulation, program development for microcontrollers and simulating the programmed microcontroller together with its application circuit.



  6. Ngspice

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    Ngspice is a mixed-level/mixed-signal circuit simulator. Its code is based on three open source software packages: Spice3f5, Cider1b1 and Xspice. Ngspice is part of gEDA project, a full GPL'd suite of Electronic Design Automation tools.

  7. Oregano

    • FreeOpen Source
    • Linux

    oregano - An electrical engineering tool for GNOME.

  8. Qucs-S

    • FreeOpen Source
    • Linux

    Qucs-S is a spin-off of the Qucs cross-platform circuit simulator. "S" letter indicates SPICE. The purpose of the Qucs-S subproject is to use free SPICE circuit simulation kernels with the Qucs GUI.

    Qucs-S vs LTspice opinions
    pros, cons and recent comments

    Harmonic Balance simulation and Xyce!

    Positive comment about 4 years ago
    Copy a direct link to this comment to your clipboard   
    If this Comment contains spam or other abuse, notify admins about it.

    0
  9. Emulino

    • FreeOpen Source
    • Linux

    Emulino is an emulator for the Arduino platform by Greg Hewgill, originally found on emulino: arduino cpu emulator.

    No screenshots yet
  10. StochSD

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Online
    • Chrome OS

    StochSD (Stochastic System Dynamics) is a System Dynamics simulation software with focus on stochastics. It is a form of Continuous System Simulation (CSS) that in addition to model and simulate continuous flows between compartments, can handle transitions of discrete entities.

Showing 10 of 10 alternatives