LTspice IV is a high performance Spice III simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators.

Simetrix is described as 'SIMetrix/SIMPLIS enables engineers to design and simulate switching power electronics systems' and is an app in the education & reference category. There are three alternatives to Simetrix for Windows, Mac, Linux and Web-based. The best Simetrix alternative is LTspice, which is free. Other great apps like Simetrix are Micro-Cap and Circuit Solver Web.
LTspice IV is a high performance Spice III simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators.

Integrated schematic editor and simulator. Dynamic analysis updates waveforms and curves as you edit Native digital simulator Worst Case analysis to find the statistical and extreme limits of performance Smoke Analysis to assess how close the circuit is to violating maximum opera.




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.


