g-Eclipse (http://www.eclipse.org/geclipse) is a tool and a framework that allows users and developers to access Computing Grids and Cloud Computing resources in a unified way. The framework itself is independent from a certain Grid middleware or Cloud Computing provider. The g-Eclipse project maintains a set of connectors to Grid middlewares and provides an adapter to Amazon's webservices EC2 and S3 (see http://wiki.eclipse.org/G-Eclipse-Middleware-Extensions).