Request: Collaboration Plugin – write one article with two authors

Hello,

I am looking for a plugin, so I can write one article with two authors.

That could be realized either in a kind of “Facebook style”. Meaning, author1 is posting something, author2 can post something underneath and so on.

Or it could be done in two columns, so one author writes something about a certain topic and the other one writes something about the same topic right next to it.

See what I’m aiming at?

And maybe this could also be realized with author-name and “small picture” at each post.

Does something like that exist?

Thanks!
lunatic54