Sneaky Bastard

I was looking around for a good Open Source XML editor for Mac OS X (native or Java). I just want element and attribute auto-complete based on the document schema, and rational cursor control. I like the <oXygen/> XML Editor, but my license ran out at version 8.2, and I don’t have the cash to drop on the current version.

I saw a few WYSIWYG editors, which isn’t at all what I’m looking for. This product called Serna Visual XML Editor is interesting, but on the download page for the Open Source version, they have a bit of disclaimer text. That makes me feel all warm and fuzzy.