gUSE (grid and cloud User Support Environment) is a DCI virtualization environment providing a scalable set of high-level services by which interoperation between DCIs and user communities can be achieved.
The WS-PGRADE Portal is a web portal of the gUSE and it is the second generation P-GRADE portal that introduces many advanced features both at the workflow and architecture level. It supports development and submission of distributed applications executed on the computational resources of various distributed computing infrastructures (DCIs) including clusters, service grids (ARC, gLite, Globus, UNICORE), BOINC desktop grids and Google App Engine cloud.
It explicitly distinguishes between two different types of user communities: application developers and end-users. Through a dedicated view, the application developers have access to all the advanced workflow features (graph, abstract workflow, template, application and project) to develop new workflow applications.
The built-in gUSE repository stores the workflow objects published by the application developers, to be downloaded and further developed by the community. The gUSE repository provides a forum for collaboration and enables workflow sharing between application developers.
More about gUSE: http://guse.hu/