For Windows Environment

You can choose to download:

The whole package with source codes and precompiled programs for both Java and C. Ready to run - 1.8MB. Download.

Or to download

Package with source codes and precompiled Java programs only. You will need to compile the OpenGL Examples in the ogl sub directory by yourself (702KB). Download.
Package of precompiled OpenGL example programs. Download this and extract to the ogl directory (1.08MB). Download.

Also, you need to download the trigger.exe program and copy it to a directory that declared in the PATH environment variable.

For Unix Environment

Download the package with Java and C source codes, and precompiled Java programs (470KB). Download.
Download these two scripts trigger and getpid. Put these scripts into a directory that declared in teh PATH environment variables, or you can put them into the /usr/local/bin directory.
If you are using Linux, you can download the package of precompiled OpenGL example programs for Linux Environment (compress in tar and gz formats). Extract to the ogl sub-directory of the installed directory to have it works (200KB). Download.