GlassFish is the open source community based implementation of Java EE 5. GlassFish has a few tools projects, one of which is openInstaller.

openInstaller is an open source community project building a free and comprehensive next generation installer framework. While the initial development of openInstaller was done by Sun Microsystems, it is now available under the open source Common Development and Distribution License (CDDL).
The openInstaller project provides the framework for developers to create cross platform installations; it is a part of the GlassFish community of projects, and now includes and uses the Swixml, the GUI generating engine that uses Declarative Programming to define Graphical User Interfaces.