[natejenkins]

Maybe you should check us out: www.authorea.com

We're pseudo-realtime by design, so you only will see collaborators' edits once they are saved. You will see which section or paragraph they are working on, but they have exclusive editing-rights to that element. There is already a git backend and markdown editing option.

We're working on git push/pull access, that should be coming very soon. Currently you can see/undo commits via what we call the newsfeed.