Well, what did you expect? To add something constructive: There are several solutions for collaborative editing that you can host yourself, like Etherpad or go

Well, what did you expect? To add something constructive: There are several solutions for collaborative editing that you can host yourself, like Etherpad or gobby. https://en.wikipedia.org/wiki/Etherpad https://en.wikipedia.org/wiki/Etherpad https://en.wikipedia.org/wiki/Gobby https://en.wikipedia.org/wiki/Gobby