New in owncloud 9.1 |

ownCloud is an open source, self-hosted file sync and share app platform. Access & sync your files, contacts, calendars & bookmarks across your devices. You decide what happens with your data, where it is and who can access it!

Source: New in owncloud 9.1 |

This update adds 2FA for better authentication, collaborative doc editing with Collabora Online, and improvements in scalability and federation. No mention of NextCloud fork.