The collaboration between Orange Labs and Inria (National Institute for Research in Digital Science and Technology) resulted in proposing a set of tools for OASIS TOSCA (Topology and Orchestration Specification for Cloud Applications) deployment descriptors. It can be used for syntax and type checking of specifications or resources configuration deployment/update descriptors written in TOSCA. It also allows to visualize the associated architecture in different ways (UML, TOSCA, network diagrams).
Visit TOSCA toolbox web portal to get a quick overview.