Nextcloud
Used by 3 peopleen.wikipedia.org ↗
“When I need to share documents, manage calendars, set appointments, or do video chats, I use my own Nextcloud server.”
Robert W Gehl Interview, Professor (Communication and Media Studies) · via Uses This 
“On my virtual host, I run Nextcloud as a file server and to sync calendars, contacts, notes, tasks, and such between my computers and phone.”
Nick Montfort Interview, Professor of digital media (MIT) · via Uses This
