It's orthogonal - the GWT support in Seam currently uses GWT to render the whole page and uses Seam Remoting to access Seam components and contexts whilst gwt4jsf allows you to embed GWT widgets inside JSF pages. IMO this is the more interesting approach as it allows you to mix and match widgets. It's also probably less mature (though ask on the RichFaces forum for more). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4084839#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...