AC3D (Inivis)

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AC3D (Inivis) is a 3D modeling application that began in the 90's on the Amiga platform. Used in a number of industries, MathWorks actively recommends it in many of their aerospace-related articles[1] due to price and compatibility. AC3D does not feature its own renderer, but can generate output files for both RenderMan and POV-Ray among others.