Acceleo
Development
Acceleo is an Open Source software based on the Eclipse platform. The generators also are open-source, you may modify them according to the module license.
The Acceleo team is open to any idea, suggestion or contribution done using the forum or the bug reports . If you want to take part in development of Acceleo you should have a look at this section.
For more information: http://www.acceleo.org/pages/home/en