Kerkythea is a standalone freeware render engine, using physically accurate materials and lights, aiming for the best quality rendering in the most efficient timeframe. The target of Kerkythea is to simplify the task of quality rendering by providing the necessary tools to automate scene setup, such as staging using the GL real-time viewer, material editor, general/render settings, editors, etc., under a common interface. Their homepage can be found on http://www.kerkythea.net It's current API is based on the fox toolkit and it comes in Windows and Linux executable flavors. It also runs under the unix windowing system X11 on Mac OSX (Panther of Leopard).
These are the features from the latest release on 08 February, 2008, Kerkythea Rendering System 2008 Echo Edition v.2.0.5
Easy and fast rendering - Optimized ray tracing kernel.
Easy and consist