The better Seam-Flex integration framework I found. It is really complete in lots of aspects: -Free!! -Authentication, VALIDATORS, RMI, Optimizations in every corner (for example the permissions you get from java are cached to improve perfomance!), Data paging component ready-to-use (you have to see their datagrid : O ), logging implemented, really good entities management (formerly called Tide), Lazy loading(!!!), JMS (!), clean code style, event dispatching using annotations and contexts similarly to J2EE frameworks. Two thumbs up! SD.Plox