!? Wikimedia and Notion, just off the top of my head. And Confluence was initially just textarea inputs, its early WYSIWYG was engagingly bad.
Notion is supposedly able to do it: https://www.notion.so/help/collaborate-within-a-workspace#re....
Wikimedia is apparently working on it: https://www.mediawiki.org/wiki/VisualEditor/Real-time_collab...
Notion is supposedly able to do it: https://www.notion.so/help/collaborate-within-a-workspace#re....
Wikimedia is apparently working on it: https://www.mediawiki.org/wiki/VisualEditor/Real-time_collab...