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Re:Supabase – Realtime: Multiplayer Edition by jahewson on Thursday August 18, 2022 @04:10PM (#32514292)
> I think at ProseMirror they're using Yjs

No, ProseMirror has its own approach to sync.

> OT was what Google Wave was based on and I think current colab editing in Google Docs and other of their office products use this.

Yep.

Re:Supabase – Realtime: Multiplayer Edition by samwillis on Thursday August 18, 2022 @05:04PM (#32514884)
ProseMirror has its own OT system developed by its lead developer. However the developer behind Yjs has created Yjs bindings for it that are first class!

The team behind TipTap (built on top of ProseMirror), created the Hocuspocus server backend for Yjs and collaborative text editing.