The Riena platform is the foundation for building multi-tier enterprise client/server applications. As such Riena is broadening the usage of the service oriented architecture of OSGi/Equinox by providing access to local and remote services in a transparent way. Using this uniform programming model, the components of Riena and the business components of the enterprise application can be developed regardless of their target location. Components are later easily placed on client or server depending on the business requirements.
As an example the Riena user interface components will support a business process oriented user interface visualization and navigation metaphor which can be used as alternative to the default workbench layout.
For more information about Riena, its component and the plan checkout our wiki
The Wiki page Getting Started contains the download links and all that.