I have several existing Struts applications in our company and we would like to migrate them all over to RichFaces. The problem is that several of them are somewhat large applications (40 pages or more) and would require a good amount of time and effort to convert. We have some requirements for new functionality and I would like to use RichFaces to implement that functionality. Is it possible to integrate RichFaces into an existing Struts2 application and have them live side-by-side successfully? Is there any documentation that outlines the process?