Gatein-forge-plugin is a project mainly written in Java, it's free.
Plugin for SeamForge
!!! This is a work in progress, mostly a broken copy of the RichFaces plugin as of now
This plugin allows to add a GateInFacet. It will enable a JSF application to run in a portal environment.
Usage instructions: From the forge prompt, run the "gatein setup" command to install the GateInFacet. Installing the GateInFacet installs the required web.xml and portlet.xml
Once the Facet is installed, you are ready to develop your GateIn application.