What's a good XML viewer/editor for Mac OS X?

I use XML Editor from XMLmind for editing/viewing XML file in Mac.

It's not bad, but I expect an XML editor for Mac. What options do I have including the commercial/free software?

OS X Software for Editing XML

• EditX (commercial)
• oXygen (commercial)
• XML Edita (commercial)
• XMLMate (free/open source plugin) for TextMate (shareware)
• XMPlify (commercial)

Although it's still a beta I have found Xmplify to be a pretty useful XML aware tool. Copes with DTD, XSD, XPath and XSL transformation in the tool

Eclipse works on Mac OS and it is one of the best XML editor around, actually. It has XSD validation, autocompletion towards this schema. Also, it offers a graphical XSD designer.

IntelliJ IDEA is overall a good IDE, it's available on Mac, and it supports editing XML in ways such as syntax highlighting, collapsing a given scope, and validating XML. I haven't used it much for XML, but I've had good experiences with that IDE for other purposes so thought I would mention it here.

And of course Emacs with psgml-mode or nxml-mode will edit XML.