I like Dat, but right now it fails on the author's reliability criterion. And it's not clear[1] whether multi-writer is still a work in progress, which would mean a failure on "collaborative", too.
1. Looks like it's still not finalized, but it might be—and the uncertainty about the answer is a failure in and of itself.
1. Looks like it's still not finalized, but it might be—and the uncertainty about the answer is a failure in and of itself.