For RMG 3.2, a number of different packages are available.
Download them from the Sourceforge download page HERE!.
For help installing them, please refer to the Installing RMG section of the documentation.
To get the latest development version of the source code (the head of the official master branch) you can download a snapshot from http://github.com/GreenGroup/RMG-Java/archives/master or use either git or SVN for read-only access:
If you might want to make changes, a better idea is to create your own account on github.com, fork the official repository (http://github.com/greengroup/RMG-Java), and clone that. There’s help at http://help.github.com/
For help compiling, please refer to the Compiling RMG from Source section of the documentation.