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

      • 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 3 years ago

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      • FreemiumProprietary
      • Windows
      Software for Simulating Voltage and Currents of a text file net-list of a electronics components such as Resistors, Capacitors, inductors, transisters, Diodes, Voltage and Current Sources, etc.
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      • FreeProprietary
      • Mac
      Simulates and analyses electronic circuits that can range in complexity from a single resistor to an integrated circuit comprising tens-of-thousands of devices.
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    1. Powerful and simple to use electronic schematics editor.
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      • FreeOpen Source
      • Linux
      Emulino is an emulator for the Arduino platform by Greg Hewgill, originally found on emulino: arduino cpu emulator.
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    2. Circuit Solver is an electronic circuit simulator. You drag your electrical components and place them on one at a time. You hook up some sources and you place some meters to read the values.
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    3. Interactive online circuit simulator.
      No screenshots yet
      • Free PersonalProprietary
      • Windows
      Printed Circuit Board Design Made Easy: Professional-Grade PCB Design Software with Free Live Technical Support. PCB Artist Includes Features Such as Multi-Page Schematics and Netlist Import.
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      • 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 19 of 19 alternatives