Here's OpenOffice's recent story. In an email titled "What Would OpenOffice Retirement Involve?", Apache OpenOffice Vice President Dennis Hamilton wrote, "In the case of Apache OpenOffice, needing to disclose security vulnerabilities for which there is no mitigation in an update has become a serious issue."
Further, Hamilton said, "It is also my considered opinion that there is no ready supply of developers who have the capacity, capability, and will to supplement the roughly half-dozen volunteers holding the project together."
That's no news to anyone who has followed the OpenOffice/LibreOffice saga. For example, LibreOffice saw 14 version updates last year, compared to one version update for OpenOffice in October 2015.
While, officially, OpenOffice isn't dead yet, for all practical purposes it's been a dead program running for years now.
Since then, OpenOffice has barely limped along. At the same time, The Document Foundation, has done excellent work with LibreOffice.
LibreOffice, which runs on Linux, MacOS, and Windows, is a great desktop office suite. Besides open-source software fans, government agencies, such as the UK, France, and Italy, have moved to LibreOffice.