"Like the idea of having a cloud office suite, but not crazy about being locked into Microsoft Office 365 or Google Docs software-as-a-service (SaaS) ? Two open-source companies, ownCloud and Kolab Systems, are working on enabling an office suite for your own private cloud.
Kolab, like ownCloud, is using Collabora's cloud version of the open-source LibreOffice office suite, Collabora CloudSuite. The desktop version of LibreOffice is my favorite office suite."