Applications integration beyond local clouds with OCM

<!--HTML-->The Open Cloud Mesh (OCM) protocol has been adopted as part of the ScienceMesh infrastructure to enable interactive and agile collaboration across various file synchronization and sharing providers at a pan-European level. With such infrastructure emerging as the collaboration space across institutions, an important added value is the ability to open document files and work with other collaborators, by exploiting concurrent editing capabilities of common online editors such as Collabora and CodiMD. In this presentation, we demonstrate the work done towards integrating applications on top of OCM-shared files, both in terms of OCM extensions and web UI, and how this enables organizations that are part of ScienceMesh to share their application engines. We discuss licensing issues related to such cross-sites use cases, and we conclude with future prospects in the landscape of collaborative apps for cloud storage systems.