LTspice 17.2.4 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The most popular version among the application users is 4.1. We recommend checking the downloaded files with any free antivirus. This free Mac app was originally produced by Linear Technology. The default filename for the application's installer is ltspiceiv.dmg.
From the developer:
LTspice IV is a high performance SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators. The enhancements to SPICE have made simulating switching regulators extremely fast compared to normal SPICE simulators, allowing the user to view waveforms for most switching regulators in just a few minutes.
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