The Kerkythea Renderer is a free software that work well with Google SketchUp. The software is a program that works with 3D files to render and create photo realistic textures and lighting. Though in order to work with Kekythea and SketchUp you will need to download the SketchUp plugin from Kerkythea. This allows you to export your SketchUp drawing to a .xls format which is read by Kerkythea. The program does have its drawbacks. For one Kerkythea has a learning curve and takes a little while just to figure out how to use the program. The rendering also takes quite some time to render a final image. And as a new user with Kerkythea it has hard to navigate through your model. But one of the benefits of Kerkythea is that it also imports your views from SketchUp, and it is suggested to use those views instead of manually navigating through the model.
Once you get the hang of the program it is pretty amazing. The rendering quality is top notch and the materials library are also very good. Though, you need to note that materials do not transfer well from SketchUp, for the most part you will have to replace the materials with those offered by Kerkythea. But the materials are substantially better than those of SketchUp and are very realistic.
Overall, Kerkythea 3D rendering software works well with Google SketchUp. The software and plugin works great though there is a learning curve and takes up a considerable amount of your computers processing power. At the time of this review the Kerkythea Renderer for Google SketchUp is free (but they do offer packages that you need to pay for). I rank the renderer 4 out of 5 stars because once you get the hang of it, you can really create some amazing images.