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.- Free • Open Source
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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
Browser version is not the same as running locally
Too simplistic compared to LTspice
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
it is much easier to operate compared to Lt Spice
OpenModelica – A Free Modelica Environment!.
Xcos is a graphical editor to design hybrid dynamical systems models. Models can be designed, loaded, saved, compiled and simulated.
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.
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.
oregano - An electrical engineering tool for GNOME.
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
Harmonic Balance simulation and Xyce!
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.