LiquidMaya is a Maya to Renderman plug-in that handles full Renderman output support with a focus on speed, efficiency, and extensibility. Its features include procedural rib generation, full network rendering support, segmented rib files, a shader assignment interface, and much more. Along with the ability to write full C++ plug-ins, it is incredibly easy to script Liquid with Mel. Liquid was used for the visual effects of the "Lord of the Rings" movie.
CryptEngine is a fast 3D engine for Java. It is based on OpenGL and provides components and objects allowing the description and rendering of 3D scenes. Unlike several other 3D engines, it focuses on rapid application development and makes it possible to create and render complex 3D scenes without having to learn OpenGL. A large collection of demos are included, demonstrating the many features and providing you with valuable design techniques and tricks. It also facilitates game design with a sound system, scripting, and networking.