Octane Render is described as 'The world's first GPU based, un-biased, physically based renderer. What does that mean? It uses the video card in your computer to render photorealistic results fast...really fast. Thllows the user to create stunning works in a fraction of the time of' and is an app. There are more than 25 alternatives to Octane Render for a variety of platforms, including Windows, Mac, Linux, Autodesk 3ds Max and Sketchup apps. The best Octane Render alternative is LuxCoreRender, which is both free and Open Source. Other great apps like Octane Render are MoonRay, Adobe Dimension, POV-Ray and Cycles Renderer.