ONLYOFFICE provides a corporate office suite with integrated a CRM system, project and document management and collaboration tools, calendar, and mail. It is composed of three servers: Community Server that offers 8 modules and tools: People, Projects, CRM, Documents, CRM, Community, mail client, calendar and chat; Document Server that combines text, spreadsheet and presentation online editors allowing to co-edit documents in real time, review and track version history, and Mail Server. What’s new in ONLYOFFICE Community Server 8.9.0: mail and calendar integration; mail autoreply; address book; Review access rights to documents. Document Server 4.0: fast real-time co-editing like in Google Docs; commenting and integrated chat; reviewing and tracking changes; version history.