Free LTspice Alternatives

    The best free alternative to LTspice is Circuit Simulator, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to LTspice and 19 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to LTspice are QUCS (Free, Open Source), Xcos (Free, Open Source), OpenModelica (Free, Open Source) and Ktechlab (Free, Open Source).

    This page was last updated Feb 20, 2021

    1. 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 Simulator vs LTspice opinions
      Some users think Circuit Simulator is a great alternative to LTspice, some don't.
      Too simplistic compared to LTspice
      Negative comment over 5 years ago

      2
      Browser version is not the same as running locally
      Negative comment over 3 years ago

      1
      • 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.
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      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 almost 4 years ago

      3


      • 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.
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      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      OpenModelica – A Free Modelica Environment!
      • 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.
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      • 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.
      • Free PersonalProprietary
      • Online
      Schematics.com empowers engineers to design, share, and collaborate on circuit design online.
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      • FreemiumProprietary
      • Android
      • iPhone
      • Windows Phone
      • Kindle Fire
      Design and simulate electronic circuits! All joking aside, this time you will understand how electronic circuits work. "I stumbled upon some serious gold" - GeekBeat.
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    2. With Solve Elec you can : - draw and analyze electrical circuits functioning in direct or alternating current - get literal formulas and values for current intensities and voltages defined in the circuit. - verify circuit related equations. - draw graphs.
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    3. oregano - An electrical engineering tool for GNOME oregano is an application for schematic capture and simulation of electronic circuits.
    Showing 10 of 19 alternatives