Flex en LiveCycle

XUIML for Adobe Flex is an open source framework and markup language to create Adobe Flex user interfaces quickly and without coding a single line of ActionScript. The XUIML terminal connects to any SOAP or RESTful web service.

FusionCharts for Flex
Granite Data Services (GraniteDS or GDS) is a free, open source, (LGPL'd) alternative to Adobe® LiveCycle® (Flex™ 2+) Data Services for Java EE application servers. The primary goal of this project is to provide a framework for Flex 2+/EJB 3/Seam/Spring/Guice/POJO application development with full AMF3/RemoteObject benefits.

Jspresso is a new framework for easily building rich Internet applications. It dramatically reduces the development cycles needed to get your corporate application up and running while not sacrificing quality, robustness, and performance. It is not just another Web application framework, but offer the exact same ergonomics as desktop applications while keeping an N-tier, server-centric architecture on a Java backend. Applications can be deployed either in Adobe's Flex, Ajax WingS, Canoo ULC, or Swing and all on the same codebase without a single specific line of GUI code.
XUIML for Adobe Flex is a framework and markup language to create Adobe Flex user interfaces quickly and without coding a single line of ActionScript. The XUIML terminal connects to any SOAP or RESTful Web service and expects simple UI instructions such as "open window", "add tab panel", or "draw textbox", which are then rendered as Adobe Flex widgets.