I think this is a great question.
I was originally interested in BugsEverywhere, but noticed that the website linked to a demo at http://bugs.bugseverywhere.org/ which was... not a demo. This gave me the impression that the project was completely dead, so I moved on.
Recently I've been looking at git-bug, which is similar, but I've been hesitant to use it because the readme talks about how it's alpha software and I'm not super excited about the demo web interface.
I'd be interested to hear what others think.