Coworking has emerged as an attractive model for organization. It relies on a highly dynamic collaborations among different partners. Traditional centralized social platform lack fundamental requirements for such collaborations potentially short, that are the management of the dynamic topology of such professional networks, privacy, data exchanges and ownership. In this paper, we present SmartKeepers, a decentralized and secure environment for coworking activity. Each user physically owns her node that she plugs in and out as she moves from one collaborative space to another. The system supports a large variety of network topologies and is fully interoperable with W3C compliant solutions. We showcase the cogency of the Semantic Web for building decentralized and secure services while keeping every user at the core of the data ownership process.