To me it's shocking that there's nothing for editing XML that equates to an editable tree GUI interface where nodes and properties can be rendered onto somethin

To me it's shocking that there's nothing for editing XML that equates to an editable tree GUI interface where nodes and properties can be rendered onto something resembling a document but yet browsable (by expanding and collapsing node) with the same paradigm of a file-system browser gui. I'm working on this myself actually, in meta64.com (see it on github, because the site is not always live, and is experimental). I am using JCR as the back end data storage but seriously considering adding a feature so support direct XML editing. XML and also REST are highly structural, and yet everyone seems to just use syntax-highlighting text editors to edit them rather than something more akin to a tree-based browser, that would render something more friendly looking (with expand/collapse capability). Think of it like this, you have seen RSS XML before right? You have also seen web sites that RENDER the RSS feed into a document-looking thing. That's what i'm getting at. Going from editing this stuff as a text file, to something much more advanced, like a tree-browser. Maybe there are some things i'm not aware of, like perhaps even an Atom Editor plugin or whatever, but I don't think there's anything in wide use or i'd know about it, having been a web developer for 25yrs now.