AgentFX 2 Platform
A OpenGL 3D-engine offering features supported by the latest graphics cards combined with portability options that come with the use of Java. [Commercial]
Espresso3D
A high performance real-time 3D game and application engine with OpenGL rendering for the Java. [Free for non-commercial projects]
GL4Java
Maps the OpenGL API to Java, using the Java Native Interface (JNI) to talk to the operating system's native OpenGL library. Windows, Linux and Mac. [Open Source, LGPL]
JGL
A 3D Graphics Library for Java which is similar to OpenGL. [Open Source, LGPL]