Today’s mobile applications, spanning from file storage and syncing, place checking in and tagging, multimedia sharing, streaming and recommendation, to social and professional networking, rely a lot on cloudbased services, which in turn offer increasingly more functionalities through their publicly available APIs. Users have greeted this abundance of services with even greater demand for innovative applications to address personal and business needs, but are still unaware of the full power that could be leveraged from their data, currently scattered on various platforms. In this complex ecosystem of mobile applications OPENi offers a way to facilitate developers into building applications over the multiple and diverse APIs but also provides users with their own personal cloud storage space, the "Cloudlet", equipped with strong privacy controlling mechanisms, accessed through its open-source Graph API platform. New business models can thus be deployed that leverage the full...