Open-Xchange (OX) is a software company that provides the OX App Suite, which includes email, collaboration, file storage and security applications. OX has experienced strong growth, with over 15 million seats sold as of 2012 and 150 employees. The document describes the various applications within the OX App Suite, such as OX Portal for centralized access, OX Unified PIM for contacts and calendar, and OX Drive for cloud storage.