You could try astral.ninja or also Gossip by #[2] (though I haven't used the latter myself, but I've seen developers say good things about it)
Discussion
Cool, thanks. astral.ninja is probably the winner, so far, though I wish the raw metadata view was either bigger, or had scroll bars. Gossip's neat, but probably more work than it's worth for me, at the moment. Though I might look at what it would take to extend it with experimental features.