Corona Renderer is described as 'New high-performance (un)biased photorealistic renderer, available for 3ds Max and as a standalone CLI application. There are also other plugins currently in development: Cinema 4D and Maya plugins are available in public and semi-public alpha stages' and is a 3D Painting app in the photos & graphics category. There are six alternatives to Corona Renderer for a variety of platforms, including Windows, Mac, Linux, Web-based and iPad apps. The best Corona Renderer alternative is ZBrush. It's not free, so if you're looking for a free alternative, you could try Meta 3D Modeller. Other great apps like Corona Renderer are Autodesk Mudbox, V-Ray, MyArchitectAI and ShapeWorks.