Download of GaussianBeam 0.4 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software relates to Education Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
GaussianBeam is a Gaussian optics simulator.
You may want to check out more Mac applications, such as PropCalc, bioclipse or wandora-start, which might be related to GaussianBeam.