Download of HDRLightStudioStrata 4.3 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This Mac application was originally produced by Strata. We recommend checking the downloaded files with any free antivirus. HDRLightStudioStrata for Mac relates to Design & Photo Tools.
From the developer:
HDRLightStudioStrata is an optional plugin application for Design 3D CX 8 that allows you to build your lighting and reflections interactively to achieve studio-like lighting. You can actually click on surfaces to direct where a light should be placed in order to get the reflection to appear in that exact spot.
You may want to check out more Mac applications, such as Smith Chart for Mac, Movie2Shot or TVPaint Animation, which might be related to HDRLightStudioStrata.