OCEAN provides four services to support open cloud projects: 1) An online Open Cloud Directory that catalogs open source cloud software and documentation from European and Japanese projects; 2) ETICS, a build, test and quality verification support service for open source projects; 3) An Open Cloud Interoperability Framework and Roadmap that maps projects to standards and identifies opportunities for collaboration; 4) Open Cloud Plugfests to test interoperability between projects and compliance with standards. The overall goal is to foster collaboration and innovation in open source cloud computing in Europe and beyond.