OCEAN (www.ocean-project.eu ) is a support action project supported by the European Commission under the Seventh Framework Programme for research, technological development and demonstration. The main mission of OCEAN is to support European Open Source cloud projects (especially FP7 projects). The objective is to identify the projects, position them in relation to each other, show where the gaps and the interoperability opportunities are. By helping to organize the open cloud R&D landscape we contribute to creating a unique, sustainable open cloud ecosystem. OCEAN provides a number of support services to open source cloud projects including the Open Cloud Directory (www.ocdirectory.org), code quality and interoperability testing services and we also organize interoperability events. In ghe talk we will present the OCEAN services and explain how projects can be involved.