Coherence is an open-source license multimedia computer application developed under the MIT system. As a stand-alone application, Coherence performs as a DLNA/UPnP Media Server.Coherence has an in-built capability to export local files or online media via its back ends to other UPnP clients.With supported clients, Coherence functions as a controllable DLNA/UPnP MediaRenderer.Coherence can also function as a Python framework to enable other applications to access digital-living networks and resources.