The development of Flex/Java rich internet apps are benefitted by the usage of automated data integration solutions and productivity tools. Adobe offers two such apps- LiveCycle Data Services ES2 (LCDS) and open source BlazeDS 3. While LiveCycle Data Services is perfect for those who need support for thousands of users, its high cost of licensing makes it unaffordable for many enterprises.
Other options that can be considered are GraniteDS, WebOrb, and Clear Toolkit. The first two products offer their own implementation of the AMF protocol while Clear Toolkit uses the AMF libraries that come with BlazeDS.
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